Agenda - Parks and Recreation Commission - 10/14/1993

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Table L Tree Characteristics Species Root Soil I Soil pH Mature Mature Hazard Damage- Landscape Severance6 Compactiont Preference~ 1tee Crown Tree Causing Value*'1 & Flooding6 J Height Spread Rating.7 Roots (feet)$ (feet)8 Northern white cedar 1 ole~ant 'Tolerant 6.0-8.0 40-50 10-20 Low H~gh White tlr ~ olerant Sensitive 4,0-6.5 50-75 10- 20 Medium High White pine Tolerant Sensitive 4.5-6.5 80-100 50-80 Medium High Red pine Tolerant Sensitive 4.5-6,0 50-80 20-40 (Medium) Medium Eastern redcedar Tolerant Sensitive 4.7-7.8 40-50 10-20 Low Low Colorado spruce Imermedia~e Tolerant 4.6-6.5 50-100 20-30 Medium High ' Black ash 7olerant . Tolerant 4.1-6.5 40-70 30-60 (Medium) ~' Medium White ash Tolerant Intermediate 5.0-7.5 70-80 50+ (Medium) Medium . .'Sens~twe Quaking aspen Tolerant Sensitive 4,8-6.5 40-60 20-35 Medium Yes Low Paper birch intermediate Sensitive 5.0-B.0 50-70 30-50 Medium Medium ~w birch intermediate Sensitive 4.S-8.0 S0-70 25-50 Medium Medium Ohio buckeye Intermediate Intermediate 6.1-6.5 30-50 30-40 Medium Yes Medium Catalpa Intermediate Toleran[ 6.1-8.0 50-80 30-50 Medium Low Kentucky cofleetree Inte~ediate Intermediate 6.5-7.5 50-80 40-50 Low High Red-osier dogwood 7oierant intermediate ~ ' 6.1-8.5 . 8-10 10-12 (Low) - Medium Slippery elm (Tolerant) (intermediate) 6.6-8.0 · 60-70 40-60 Medium Yes Low Hawthorn In~ermediate Intermediate 6.0-7.5 20-40 20-30 Low High Honeyiocust , Tolerant Intermediate 6.0-8.0 50-75 50-75 Medium Yes Medium Basswood Tolerant . Sensitive 5.5-7.3 YO-lO0 50-75 Medium Medium Red maple ~oierant Tolerant 4.5-7.5 50-70 40-60 Medium High Sugar maple Tolerant Sensitive 5.5-7.3 60-80 60-80 Medium High Black oak Sensitive Sensitive 6.0-6.5 50-80 50-70 Low Yes High Northern pin oak Sensitive Sensitive 5.5-7.5 50-75 30-50 Low Yes Medium Bicolor oak Tolerant Tolerant 6.0-6.5 60-70 40-50 Low Yes High Wild plum. 7olerant Sensitive 6.5-6.6 20-25 15-25 Low Medium Black walnut Sensitive intermediate 6.6-8.0 70-100 60-100+ Medium - Medium ~ ..Tolerant Numbers in column headings correspond to numbered sources in the reference section. Values in parentheses reflect the authoi's' or technical advisors' opinions. *Hazard Tree Rating refers t6 tt~'e relative potential for a tree to become hazardous. For a tree to be considered hazardous, a potential 'target'(e.g., a house, a sidewalk, or other trees) must be present. A high hazard tree rating does not imply that the tree will always fail. **Landscape Value refers to the relative value of each species in Minnesota based on hardiness, form, color, growth habits, flowering and fruiting characteristics, structural strength, longevity, insect and disease resistance, maintenance requirements, and general desirability.