Appendix B. Arborist Report. Tecumseh Park Facility Master Plan. for the Municipality of Chatham-Kent

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1 Tecumseh Park Facility Master Plan for the Municipality of Chatham-Kent Appendix B Arborist Report Brown + Storey Architects Scott Torrance Landscape Architect Inc. Storey Samways Planning Ltd. B-1

2 Arborist Report for Tecumseh Park, Chatham Ontario Urban Forest Associates Inc. February 2006 The site was surveyed January 9-10, trees (179 separate stems total) were inspected within the park boundary, and a further 18 were inspected briefly across the adjacent streets for general condition. Numbered metal tags were attached at 1.8 metres height. Data for each is shown on the attached spreadsheet. The species breakdown in the park is as follows: Silver Maple 62 Black Walnut 27 White Mulberry 16 Cottonwood 11 Norway Maple 11 Kwanzan Cherry 8 White Cedar 7 Norway Spruce 5 Manitoba Maple 3 European Linden 3 Red Oak 3 Hawthorn 3 Siberian Elm 3 English Oak 2 Austrian Pine 2 Unidentified Spruce 2 Sugar Maple 1 Maidenhair Tree 1 Hackberry 1 Tamarack 1 Shumard Oak 1 London Planetree 1 English Hawthorn 1 Colorado Spruce 1 Blue Spruce 1 White Elm 1 Young Silver Maples along the East side of the Tree of Heaven 1 park. Note that the trees are not topped. Total stems 179 There were also a number of small trees and shrubs within the Scree Garden area that are not discussed specifically in this report. The Park is typical of well used urban parks in Southern Ontario. The majority of the groundcover is maintained lawn, with some gardens, concrete walkways, and a narrow band of naturalized vegetation along the rivers. Many trees have a ring of bare soil within 1 metre of the tree base.

3 A view of the central section of the park. The ground appears heavily compacted, evidenced by the exposure of tree roots around most of the mature trees. This root exposure has contributed to root damage from lawn mowers, weed trimmers, and pedestrians. Many trees have open wounds on exposed roots, and this may be contributing to rot and disease in the trees. It is evident that most of the trees over ~15-20 years old have been topped. Topping, also called pollarding, is the removal of the upper parts of the trees and shortening of major branches to keep them from growing too large for easy maintenance or to reduce the perceived risk of falling down. This practice has not been considered acceptable by the International Society of Arboriculture (ISA) for many years because of the extremely negative effect it has on tree health. Topped trees usually regrow cut branches but these new branches have weak points of attachment leading to further branch breakage, and the resulting cut scars on the limbs usually rot causing the whole branch or the entire tree to rot from the inside and eventually fall down suddenly in storms. Trees that are a legitimate hazard should be removed rather than topped. Topping results in exactly the opposite effect of what was intended. Risks associated with large trees are a cost of tree ownership that must be managed and cannot be avoided entirely. Arborist Report for Tecumseh Park, Chatham, Ontario Urban Forest Associates Inc. 2

4 Topped trees have branches at right angles with clusters of branches growing from the old pruning cuts. If the branches or main stem have extensive rot, the tree should be removed. A topped tree that responded to topping with many resprouted branches along the stem, as well as clusters of new branches at the old pruning cuts. A topped tree that can be pruned to improve its form. The damage from topping is not severe. Compare this tree to the pictures above and on page 1. Arborist Report for Tecumseh Park, Chatham, Ontario Urban Forest Associates Inc. 3

5 Most of the smaller (recently-planted) trees within the park have been seriously damaged or ruined by weed trimmers and to a lesser extent vandals. Large scars are present on the lower stems and around the bases of the trees. Many are beyond their ability to correct the damage and produce a sound tree that is free of butt rot. No corrective pruning has been carried out on them to create a well-shaped tree crown that will minimize hazards and future maintenance. Recent pruning has been carried out on some trees, and the quality of the work appears better than what was done in earlier decades. Girdling roots are present on some trees. Maples in particular suffer from this, which can be a natural phenomenon or the results of poor planting or nursery practices. The roots grow too close to the tree cutting off the flow of sap and causing the bark to die where it is being crushed. Girdling roots can be pruned off if they do not encircle the entire tree and the tree may recover. The majority of park trees are Silver Maples (38.5%), both old and new. The old specimens are remnants of plantings done in the 1880's, and all have been topped, possibly more than once. Some topped trees can be pruned to a more natural form and retained but some are too unsafe to keep. Norway Maples in the park are particularly poor shaped and in very poor condition. Most have major defects in crotches and crown shape, and very slow growth rates compared to other species. Few should be considered for retention over the long term, and planting of more than a few is not advised. This pattern also exists on surrounding streets where several poor quality trees are in very hazardous condition. Tree 47, a severely rotted Silver Maple hazard tree. Arborist Report for Tecumseh Park, Chatham, Ontario Urban Forest Associates Inc. 4

6 Witches-brooms on branches. These are indicators of stress on any species of tree. Conclusions Many of the trees in Tecumseh Park are in generally poor condition from poor maintenance practices in the past, which have caused disease and rot in the trees. Recent maintenance is more reflective of the present standard of practice in the arboriculture profession. Correcting past mistakes will be an ongoing process for many years. A large number of trees that have been planted in the past 20 years are in generally better condition (excepting the new caliper trees) and the prospects for their continued good health are positive, especially with an up-to-date maintenance program. The riverbank areas have been allowed to naturalize to an extent, and new trees are beginning to grow there naturally. These trees are in better condition than trees in some other areas, probably because of less public use. Trees are suffering because of the heavy use of the park by large numbers people and vehicles, and lack of appropriate regular care. A maintenance program using current arboricultural practices and protection of trees from human uses is needed to protect the health of existing trees that are not hazardous, and to protect new trees so that they will become an asset to the community in the future. Arborist Report for Tecumseh Park, Chatham, Ontario Urban Forest Associates Inc. 5

7 Recommendations 1. Remove the most hazardous trees now. 2. Monitor and prune those trees that are not an apparent hazard now but show defects that will limit their safe lifespan. If pruning work discovers a major structural defect in the tree, it should be removed. 3. Remove severely damaged small trees and replace them with new specimens. 4. Remove invasive exotic species from naturalized areas. White Mulberry, Manitoba Maple, and Tree of Heaven are undesirable species that prevent the growth of desirable trees, and most of these are also in relatively poor condition now. 5. Begin a program of regular corrective pruning to properly shape all trees, beginning with new planted trees, so that they grow to their full natural size and form without double-leaders, or crossed dead, or broken branches that will cause structural weakness later in life. It will take years to fully implement the program for all trees. 6. Protect the root systems of the trees from lawnmower, weed trimmer, vehicle, and pedestrian damage. 7. Create zones within the park where vehicles are not permitted to drive or park to avoid soil compaction in the root zones of trees. Where they must use the area, work creatively to design permeable hard surfaces that will allow vehicles to coexist with trees and roots. 8. De-compact the soils to a depth of at least 30cm where possible using a tool such as an Airspade. This could be carried out at 5-10 year intervals to prevent future compaction. 9. Fertilize trees with compost or mulch, but not a high nitrogen fertilizer, which would only increase growth (not health) and may predispose the trees to disease and insect damage. 10. Plant larger caliper sized trees (80-100mm) in heavily used areas and protect them with cages for the first 5-10 years. 11. Plant a wider variety of trees in future. 38.5% of the trees in the park are Silver Maples, including most of the newly planted trees, and 48% of the trees are Maple species. This leaves the park prone to rapid loss of trees if an insect or disease that prefers Maples becomes established, such as the Asian Longhorned Beetle. Trees that should be considered are Hackberry, Basswood Tilia americana, Honeylocust Gleditsia triacanthos, Kentucky Coffeetree Gymnocladus dioicus, Bur Oak Quercus macrocarpa, Red Oak, Maidenhair Tree, and London Planetree. Norway Maple does not appear to grow well in this area. 12. Reforest the naturalized riverbanks with a mix of native Carolinian tree and shrub species. Suitable species would be Black Willow Salix nigra, Hackberry, Sycamore Platanus occidentalis, Cottonwood, Black Walnut, Nannyberry Viburnum lentago, Sandbar Willow Salix exigua, Red Osier Dogwood Cornus stolonifera, and Common Elderberry Sambucus canadensis. The plantings could be designed to keep views open in places if desired. If woody plants are not desirable, native prairie or wet meadow herb plantings could be done in those areas. Arborist Report for Tecumseh Park, Chatham, Ontario Urban Forest Associates Inc. 6

8 13. Naturalizing the riverbanks would allow the rare Shumard Oak specimen (tree 96) to reproduce itself so that there are new trees present to take the place of the original when it eventually dies. Seed could also be collected and grown for planting elsewhere. 14. Get copies of the ISA brochures related to the problems of topping trees and proper pruning techniques and distribute them to municipal staff and the public. 15. The tall White Cedars and two Austrian Pines in the Scree Garden may be too large to survive moving without extensive foliage loss, so these are not recommended for moving. The remainder of the conifers and the Kwanzan Cherries should be suitable for moving to new locations in the park using a tree spade. This should be done around September 1 st during a rainy period. Use the largest tree spade available to move as much of the soil ball as possible without disturbance. The contractors will be able to recommend the right size of spade for each tree. Stephen Smith ISA Certified Arborist ON-0618A Arborist Report for Tecumseh Park, Chatham, Ontario Urban Forest Associates Inc. 7

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10 Trees found in Tecumseh Park, Chatham in January Urban Forest Associates Inc. Tree # Common Scientific DBH Trunk Canopy Canopy Topped? 10 Year Canopy Width (m) Comments Recommendations Name Name (cm) Integrity Structure Vigour Condition North East South West 1 Silver Maple Acer saccharinum 41.2 Good Good-Fair Good Yes Good Minor deadwood. Prune 2 Silver Maple Acer saccharinum 47.2 Good Good Good No Good Tight crotch at 2.5m. Prune 3 Silver Maple Acer saccharinum 51.9 Good Fair Good No Good Broken limb west side. Prune 4 Silver Maple Acer saccharinum 42.3 Good Fair Fair No Good-Fair Some lower limbs cut to stubs. Prune 5 Silver Maple Acer saccharinum 49.2 Good Good Good No Good Prune 6 Silver Maple Acer saccharinum 45.5 Fair Poor Good Yes Fair Orange dot. One sided crown from breakage & pollarding. Prune, restore crown. 7 Silver Maple Acer saccharinum 27 Good Good-Fair Good Yes Good Prune 8 Silver Maple Acer saccharinum 70.5 Good Good-Fair Fair-Good Yes Good-Fair Orange dot. Few small broken branches. Prune 9 Silver Maple Acer saccharinum 55.2 Good Good Good Yes Good Orange dot. Prune 10 Silver Maple Acer saccharinum 66.3 Good Fair-Poor Good Yes Fair Open growth on trunk at 1.4m, witches brooms on some branches. Aggressive regrowth after heavy pruning. 11 Silver Maple Acer saccharinum 81 Good Good Good Yes Good Prune 12 Silver Maple Acer saccharinum 75.5 Fair Good-Fair Good Yes Good Hole in main stem at 15m, rot. Prune. Remove 1 upper limb. Prune 13 Silver Maple Acer saccharinum 86.6 Good Fair-Poor Fair-Poor Yes Fair?-Poor Small hole at base, may be hollow Remove 14 Silver Maple Acer saccharinum 35.4 Good Fair Fair-Good No Good Tight branch union at 8m. Grafting. Suppressed by bigger trees, hole in one upper limb, sprouts at base. Prune 15 Silver Maple Acer saccharinum 64.7 Good-Fair Fair-Poor Fair Yes Poor Rot in old branch cuts at top, epicormic sprouts on many branches. Prune and monitor or remove 16 Silver Maple Acer saccharinum 80.6 Poor Fair Fair Yes Poor Orange dot. Butt rot, open hole at base, extensive rot in trunk stub. 17 Maidenhair Tree Ginkgo biloba 46.9 Good-Fair Good Good No Good Included bark at 3m, small healing stub at 3m. Slight east lean. Tree # Common Scientific DBH Trunk Canopy Canopy Topped? 10 Year Canopy Width (m) Comments Recommendations Name Name (cm) Integrity Structure Vigour Condition North East South West 18 Silver Maple Acer saccharinum 34.5 Good Good Good No Good Orange dot. Small girdling roots, slight east lean. Prune roots, prune. 19 Hackberry Celtis occidentalis 70.1 Good Good Good No Good Minimal pruning. 20 European Linden Tilia cordata 29.6 Good Good Good No Good Large wound in low branch. Remove wounded branch. 21 Silver Maple Acer saccharinum 44 Good Good Good No Good Minimal pruning. 22 Tamarack Larix laricina 31 Good Good Good No Good Small wound near base. 23 Norway Maple Acer platanoides 49.1 Good Fair Good Yes Good Wound on branch. Prune

11 24 Silver Maple Acer saccharinum 69.8 Poor Fair-Poor Fair Yes Poor Orange dot. Wire attached, many poorly pruned & resprouting branches. Poor angles of attachment. 25 Norway Spruce Picea abies 35.4 Good Good Good No Good Minimal pruning. Healing frost crack to 4m height, 26 English Oak Quercus robur 64.3 Good Fair Fair-Good Yes Good epicormic sprouts on branches, Prune some large deadwood. 27 Silver Maple Acer saccharinum 83 Fair-Poor Fair Good Yes Poor cracks in trunk, probable rot, poorly healing cuts with rot. 28 Silver Maple Acer saccharinum 69.5 Fair-Poor Fair-Poor Fair Yes Poor Orange dot. Hole at 80cm, rot inside, hollow. 29 Sugar Maple Acer saccharum 57.4 Good Good Good No Good Few Sapsucker holes, several girdling roots. Prune roots. 30 Silver Maple Acer saccharinum 33.4 Good Good Good No Good Orange dot. 31 Silver Maple Acer saccharinum 62.2 Good Fair-Poor Good Yes Fair Wound on root, minor rot on root. Girdling roots. Prune roots. Hole at 1.5m, crack; Sapsucker 32 European Linden Tilia cordata 54.1 Fair-Poor Good Good Yes Fair holes, may have rot in centre, Remove crown may split. 33 Silver Maple Acer saccharinum 47.7 Fair Fair Good No Good-Fair Some rot in trunk. Prune 34 Silver Maple Acer saccharinum 50.1 Good Good Good No Good Prune 35 Silver Maple Acer saccharinum 41.4 Good Good Good No Good Minor wound at 3m, healing. 36 Silver Maple Acer saccharinum 61.1 Poor Fair-Poor Fair Yes Poor Orange dot. Hole at 12 & 15m Remove 37 Silver Maple Acer saccharinum 55.4 Fair-Poor Good Good No Fair-Good Many small girdling roots. Small wound at 2m, large wound at 5.5m, healing. Rot inside, tight branch angles. 38 Silver Maple Acer saccharinum 5.8 Poor Fair-Poor Fair No Poor Severe trunk damage. Remove Tree # Common Scientific DBH Trunk Canopy Canopy Topped? 10 Year Canopy Width (m) Comments Recommendations Name Name (cm) Integrity Structure Vigour Condition North East South West 39 Silver Maple Acer saccharinum 7 Poor Fair Fair No Poor Severe trunk damage. Remove 40 Silver Maple Acer saccharinum 8.1 Poor Fair Fair No Poor Severe trunk damage. Remove 41 Silver Maple Acer saccharinum 44 Good Poor Poor No Poor Major girdling roots. Tight branch union with included bark. Many witches' brooms. 42 Norway Maple Acer platanoides 54.2 Good-Fair Fair-Poor Good No Fair Stress on 2 main limbs, may break at joint. Prune for form. 43 Red Oak Quercus rubra Good Good-Fair Good No Good Blue dot. Minor wound on root, 1 Gypsy Moth egg mass. Prune Blue dot. Concrete to within 1.5m 44 Red Oak Quercus rubra Fair Fair Fair No Fair of tree on all sides. May have rot. Monitor condition, 3 vertical cracks; minor wound at prune deadwood. base. 45 Norway Spruce Picea abies 28.5 Good Good Good No Good May have girdling root on south side. Excavate, cut root. 46 Silver Maple Acer saccharinum 51.8 Good Good Good No Good Some girdling roots, bark damage Prune 47 Silver Maple Acer saccharinum 85.1 Poor Poor Poor Yes Poor Hollow. Large rotted limbs, hole at 3m. Backfilled soil over roots. Remove Prune Remove

12 48 Silver Maple Acer saccharinum 68.9 Fair Fair Good Yes Poor Silver Maple Acer saccharinum 50.6 Good Poor Poor No Poor Silver Maple Acer saccharinum 49.9 Good Fair Fair No Fair Cottonwood Populus deltoides 26.7 Fair Fair Good No Fair a Cottonwood Populus deltoides 33.9 Good Poor Good No Poor Many poorly healed cuts, may have crack 2m long. Backfilled soil over roots. Many witches' brooms on branches. Tight branch unions with included bark. Many small girdling roots, main north branch hollow. Bark torn off at 1.8m, 1m long scar, healing (ice scouring). Leans 30 northwest, will break off & fall. 52b Cottonwood Populus deltoides 33.2 Good Good Good No Good c Cottonwood Populus deltoides 12.5 Good Poor Good No Fair Leans 30 over river. 52d Cottonwood Populus deltoides 32.7 Good Good Good No Good Cottonwood Populus deltoides 44.2 Good Good-Fair Good No Good Prune Monitor - remove? Monitor - remove? Monitor - prune 54 Silver Maple Acer saccharinum 37.8 Good Fair Good No Good Minor wound at 60cm height. Prune large dead limb. Tree # Common Scientific DBH Trunk Canopy Canopy Topped? 10 Year Canopy Width (m) Comments Recommendations Name Name (cm) Integrity Structure Vigour Condition North East South West 55a White Mulberry Morus alba 34 Good Fair Fair No Fair b White Mulberry Morus alba 16.6 Fair-Poor Poor Fair No Poor Witches' brooms on branches. Several long branch stubs, epicormic sprouts on branches. Witches' brooms on branches. Leans over river, poorly healed pruning cut on trunk. 55c White Mulberry Morus alba 30 Fair Fair Fair No Fair Witches' brooms on branches. Prune 56a White Mulberry Morus alba 12.5 Fair Fair Fair No Fair-Poor Eroded soil, exposed roots. Prune or remove. 56b White Mulberry Morus alba 10 Fair Fair Fair No Fair-Poor Prune or remove. 56c White Mulberry Morus alba 12 Fair Fair Fair No Fair-Poor Prune or remove. 56d White Mulberry Morus alba 14 Fair Fair Fair No Fair-Poor Prune or remove. 56e White Mulberry Morus alba 15.3 Fair Fair Fair No Fair-Poor Prune or remove. 56f White Mulberry Morus alba 10.9 Fair Fair Fair No Fair-Poor Prune or remove. 57 Norway Maple Acer platanoides 47.1 Good Fair Fair No Fair Girdling root on south side. Prune, prune root. 58 Norway Maple Acer platanoides 56.1 Good Fair-Good Good No Good Silver Maple Acer saccharinum Poor-Fair Fair-Poor Good No Fair-Poor Silver Maple Acer saccharinum 6.2 Poor Fair Fair No Fair Girdling root on west, east, and north side. Tight crotch with included bark. Damaged at base from weed trimmers. Prune Remove Prune, prune root. Protect. Prune for form. 61 Silver Maple Acer saccharinum 5.8 Good Good Good No Good Prune for form. 62 Silver Maple Acer saccharinum 80.5 Good Fair Good Yes Good Prune for form. 63 Silver Maple Acer saccharinum 48.2 Fair Good-Fair Good Yes Good wounds on west side. 64 Silver Maple Acer saccharinum 61.8 Poor Poor Fair Yes Poor Main leader hollow, trunk may be hollow. Orange dot. Large dead limbs. Hollow top small crack at base. Prune - monitor or remove (hazard) Remove hollow branch - monitor 65 Norway Maple Acer platanoides 52.4 Fair Poor Fair No Fair Girdling root, many small cracks. Prune 66 Norway Spruce Picea abies 57 Good Good Good No Good Small hole at 1.8m, girdling root.

13 67 Manitoba Maple Acer negundo 13 Fair Good Good No Good-Fair Wounds near base. 68 Manitoba Maple Acer negundo 13 Good Good Good No Good-Fair Cottonwood Populus deltoides 26.1 Good Good Good No Good a White Mulberry Morus alba 14 Fair Fair-Poor Good No Fair-Poor Grafting together. 70b White Mulberry Morus alba 16 Fair Fair-Poor Good No Fair-Poor Grafting together. 70c White Mulberry Morus alba 16.6 Fair Fair-Poor Good No Fair-Poor d White Mulberry Morus alba 14.8 Poor Fair-Poor Good No Fair-Poor Tree # Common Scientific DBH Trunk Canopy Canopy Topped? 10 Year Canopy Width (m) Comments Recommendations Name Name (cm) Integrity Structure Vigour Condition North East South West 70e White Mulberry Morus alba 15.3 Poor Fair-Poor Good No Fair-Poor May be hollow. 70f White Mulberry Morus alba 14.6 Fair Fair-Poor Good No Fair-Poor g White Mulberry Morus alba 16.6 Fair Fair-Poor Good No Fair-Poor Cottonwood Populus deltoides 18.3 Poor Good Good No Fair Large scars on trunk. 72 Cottonwood Populus deltoides 28.1 Good Good Good No Good Silver Maple Acer saccharinum 8.2 Good-Fair Good Good No Good Small wound at 1m. Prune off co-dominant leader. 74 Cottonwood Populus deltoides 19.2 Good Good Good No Good Slightly suppressed in shade. 75 Norway Maple Acer platanoides 55.2 Good Good Good No Good-Fair Girdling root. Prune root, prune. 76 Silver Maple Acer saccharinum 63.6 Poor Fair Fair Yes Poor Orange dot. Large split at 4m. Hollow, holes in stem & rot- Hazard 77 European Linden Tilia cordata 32 Good Good Good No Good Sapsucker holes, wound on root. 78 Silver Maple Acer saccharinum 70.9 Poor Poor Poor Yes Poor Orange dot. Scar at 3m, hollow stem. 79 Silver Maple Acer saccharinum 77.1 Fair-Poor Poor Poor Yes Poor Many witches' brooms, small hole at base, hollow. 80 Silver Maple Acer saccharinum 42 Good Good Good No Good Scars on bark. 81 Silver Maple Acer saccharinum 88.5 Fair Fair-Poor Fair Yes Fair-Poor? Orange dot. Some witches' brooms. Monitor - prune 82 Silver Maple Acer saccharinum 62.4 Fair-Poor Fair Fair Yes Poor Orange dot. May be hollow (90% probability) 83 Silver Maple Acer saccharinum 52 Good Fair Fair Yes Fair-Good Prune 84 Silver Maple Acer saccharinum 80.7 Poor Fair Fair Yes Poor Hollow, open scars, 2 spiral cracks. 85 Silver Maple Acer saccharinum 82.5 Fair Fair Fair Yes Poor Parts of upper stem hollow. Monitor - prune or remove (hazard) 86 Silver Maple Acer saccharinum 82.4 Fair-Poor Poor Poor Yes Poor /2 of top broken off. Remove (hazard) or monitor & prune 87 Silver Maple Acer saccharinum 91.7 Good-Fair Fair Good Yes Fair? Probably has rot in main trunk. Monitor - prune or remove 88 Silver Maple Acer saccharinum 76.9 Fair Fair Good-Fair Yes Fair Recent cut healing slowly, minor rot. Monitor - prune 89 Silver Maple Acer saccharinum 66.5 Good Fair Fair Yes Fair Many burls on east stem. Monitor - prune 90 Cottonwood Populus deltoides Fair? Fair Good Yes Fair? Some rot in main trunk, hollow in some sections, rotted burls. Monitor, remove if necessary. Tree # Common Scientific DBH Trunk Canopy Canopy Topped? 10 Year Canopy Width (m) Comments Recommendations Name Name (cm) Integrity Structure Vigour Condition North East South West 91 London Planetree Platanus x acerifolia 17.9 Good Good Good No Good Root ball sank 3" below grade. 92a Hawthorn Crataegus spp Good Fair Good No Fair Hollow.

14 92b Hawthorn Crataegus spp Fair-Poor Fair Good No Fair Poorly healed branch stub, rot. 92c Hawthorn Crataegus spp. 26 Poor Fair Good No Poor Hollow 93 Red Oak Quercus rubra Fair Fair Fair No Fair Norway Spruce Picea abies 39.5 Good Good Good No Good White Elm Ulmus americana 18.6 Good Good Good No Good Some (sides) Wires attached, cracks in trunk, may be hollow. Bracket attached & cable, many epicormic sprouts. Few wounds Monitor - prune 96 Shumard Oak Quercus shumardii Good Fair Fair Good Monitor - prune on large branches. 97 Norway Maple Acer platanoides 7.2 Fair-Poor Fair Fair No Good-Fair Trunk damage, girdling by weed trimmers. Protect - prune 98 Silver Maple Acer saccharinum 6.5 Poor Good Good No Good-Fair Severe trunk damage from weed trimmers, healing Protect - prune 99 Silver Maple Acer saccharinum 94.4 Good Fair Fair-Poor No Good-Fair Many burls & witches' brooms. Monitor - prune 100 Siberian Elm Ulmus pumila 58.3 Good Fair Good No Good Growing in planter. Base is 60cm above ground. Planter is cracked from root growth. Tight crotch with included bark - may split. Monitor - prune 101 Silver Maple Acer saccharinum 36.6 Fair Fair-Poor Fair-Poor No Fair-Poor? Large scar on trunk, healing; many witches' brooms. Monitor - prune 102 Norway Maple Acer platanoides 7.9 Good Good Good No Good Prune for form. 103 Siberian Elm Ulmus pumila 52.8 Fair Poor Fair-Poor No Poor Planted in raised planter 60cm above ground. Planter cracked from root growth. Many grafted branches. South limb hollow. Girdling roots. Prune or remove. 104 Siberian Elm Ulmus pumila 26 Fair Good-Fair Fair No Fair-Poor Planted in raised planter 60cm Remove 105 Norway Maple Acer platanoides 24.5 Good-Fair Poor Poor Yes Poor Topped at 1.9m & regrowing. Poor form. Prune or remove. 106 Norway Maple Acer platanoides 16.8 Good Good-Fair Good No Good Prune for form. 107 Norway Maple Acer platanoides 6.5 Good-Fair Fair Good No Good-Fair Wound at base Protect - prune for form. 108 Colorado Spruce Picea pungens 38 Good Good Good No Good Tree # Common Scientific DBH Trunk Canopy Canopy Topped? 10 Year Canopy Width (m) Comments Recommendations Name Name (cm) Integrity Structure Vigour Condition North East South West 109 English Oak Quercus robur 19.9 Good Good Good No Good Prune stubs. 110 Colorado Blue Spruce Picea pungens 'Glauca' 18.6 Good Fair Fair-Poor No Fair-Poor Leans 10 south-east. Prune dead branches. 111 Silver Maple Acer saccharinum 53.7 Good Fair Poor No Fair Prune 112 English Hawthorn Crataegus laevigata 'Paul's Scarlet' 23.9 Poor Fair Fair Yes Fair Main branches hollow, trunk hollow. Prune 113 White Cedar (7 stem) Thuja occidentalis Good Good Good No Good Damage to bark on 1 stem. 114 Kwanzan Cherry Prunus serrulata 'Kwanzan' 14.2 Good Good Good Yes Good Kwanzan Cherry Prunus serrulata 'Kwanzan' 9.9 Good Good Good Yes Good White Cedar (1 stem) Thuja occidentalis Good Good Good No Good White Cedar (2 stem) Thuja occidentalis Good Good Good No Good

15 118 Kwanzan Cherry 119 Kwanzan Cherry Prunus serrulata 'Kwanzan' Prunus serrulata 'Kwanzan' 18.2 Good Good Good Yes Good Good Good Good Yes Good White Cedar (1 stem) Thuja occidentalis Good Good Good No Good White Cedar (1 stem) Thuja occidentalis Good Good Good No Good Kwanzan Cherry Prunus serrulata 'Kwanzan' 11.5 Good Good Good Yes Good Kwanzan Cherry Prunus serrulata 'Kwanzan' 14.8 Good Good Good Yes Good White Cedar (2 stem) Thuja occidentalis Good Good Good No Good Rubber hose embedded in tree Minor pruning, remove hose. 125 White Cedar (1 stem) Thuja occidentalis Good Good Good No Good Minor pruning. 126 Kwanzan Cherry Prunus serrulata 'Kwanzan' 19.3 Good-Fair Good Good Yes Good Small hole in stem, some rot. Prune branch stub. 127 Kwanzan Cherry Prunus serrulata 'Kwanzan' 18.4 Good Good Good Yes Good Minor crack. Prune branch stub. 128 Austrian Pine Pinus nigra 28.3 Good Good Good No Good Minor Sapsucker holes 129 Austrian Pine Pinus nigra 18.8 Good Good Good No Good Spruce (species?) Picea sp. 10 Good Good Good No Good Tree # Common Scientific DBH Trunk Canopy Canopy Topped? 10 Year Canopy Width (m) Comments Recommendations Name Name (cm) Integrity Structure Vigour Condition North East South West 131 Norway Spruce Picea abies 14.3 Fair Good Good No Good Large wound on trunk at 30cm, healing. 132 Spruce (species?) Picea sp Good Good Good No Good Black Walnut Juglans nigra 19.3 Good Good Good No Good Black Walnut Juglans nigra 23.3 Good Good Good No Good Improperly pruned branch stubs. Prune stubs. 135 Black Walnut Juglans nigra 25.6 Good Good Good No Good Black Walnut Juglans nigra 23.2 Good Good Good No Good Black Walnut Juglans nigra 19.9 Good Good Good No Good Black Walnut Juglans nigra 20.9 Good Good Good No Good Poorly healed branch stub. Prune stub. 139 Black Walnut Juglans nigra 21.5 Good Good Good No Good Black Walnut Juglans nigra 22.3 Good Good Good No Good Black Walnut Juglans nigra 33.6 Good Good Good No Good Improperly pruned branch stubs. Prune stubs. 142 Black Walnut Juglans nigra 26.2 Good Good Good No Good Black Walnut Juglans nigra 22.4 Good Good Good No Good Black Walnut Juglans nigra 21.9 Good Good Good No Good Manitoba Maple Acer negundo 85.5 Poor Poor Good No Poor Rot in centre, top broken, cracks. 146 Black Walnut Juglans nigra 28 Good Poor Good No Good Tree of Heaven Ailanthus altissima 16.5 Good Poor Good No Good Black Walnut Juglans nigra 29.8 Good Poor Good No Good Small crack near base. 149 Black Walnut Juglans nigra 27.1 Good Poor Good No Good Black Walnut Juglans nigra 19.7 Good Poor Good No Good Black Walnut Juglans nigra 22 Good Poor Good No Good Black Walnut Juglans nigra 20.5 Good Poor Good No Good Black Walnut Juglans nigra 26.8 Good Poor Good No Good Black Walnut Juglans nigra 15.6 Good Poor Good No Good

16 155 Black Walnut Juglans nigra 23.3 Good Poor Good No Good Black Walnut Juglans nigra 17.1 Good Poor Good No Good Black Walnut Juglans nigra 14.1 Good Poor Good No Good Black Walnut Juglans nigra 21.9 Good-Fair Poor Good No Good wounds on stem, healing. 159 Black Walnut Juglans nigra 32.9 Good Poor Good No Good Small wound at 1.4m, healing. 160 Black Walnut Juglans nigra 28 Good Poor Good No Good Black Walnut Juglans nigra 22.2 Good Poor Good No Good Trees across the street from Tecumseh Park, Chatham. Tree # Common Scientific DBH Trunk Canopy Canopy Topped? 10 Year Canopy Width (m) Comments Recommendations Name Name (cm)* Integrity Structure Vigour Condition North East South West A Silver Maple Acer saccharinum 60 No Good B Tree of Heaven Ailanthus altissima 63 No Poor Broken limb. C Silver Maple Acer saccharinum 57 No Good D Manitoba Maple Acer negundo 45 No Fair-Poor E European Linden Tilia cordata 40 No Poor Large crack. F Katsura Tree? Clump Cercidophyllum japonicum? 15 No Good G Norway Maple Acer platanoides 28 No Good H Bradford Callery Pear Pyrus calleryana 'Bradford' 15 No Good I Silver Maple Acer saccharinum 75 No Poor Lost 1/2 of crown. J Norway Maple Acer platanoides 68 No Good Large wound, rot. K Norway Maple Acer platanoides 75 Yes Fair L Norway Maple Acer platanoides 40 Yes Fair M Norway Maple Acer platanoides 38 Yes Fair-Poor Crack. N Norway Maple Acer platanoides 35 No Poor Large broken limbs. O Norway Maple Acer platanoides 60 Yes Fair P Silver Maple Acer saccharinum 40 Yes Fair Q Norway Maple Acer platanoides 50 No Poor Dying, 1/2 of crown missing. R Norway Maple Acer platanoides 40 No? Poor Crack, very slow growth. *DBH is approximate, estimated not measured.

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