| Scientific Name: |
Ulmus thomasii |
| Common Name: |
Rock Elm |
| Duration of Life: |
Perennial |
| Bloom Color: |
Yellow |
| Plant Origin: |
Native |
| Soil Type prefered: |
Sand, Loam |
| Drought Tolerance: |
Low |
| Flower Conspicuous: |
No |
| Soil Fertility Requirement: |
Medium |
| Moisture Use: |
High |
| Shade Tolerance: |
Intermediate |
| Active Growth Period: |
Spring, Summer |
| Anaerobic Tolerance: |
None |
| Calcium Carbonate Tolerance: |
Medium |
| Bloom Period: |
Mid Spring |
| Commercial Availability: |
No Known Source |
| Cold Stratification Required: |
No |
| Fall Conspicuous: |
No |
| Frost Free Days, Minimum: |
120 |
| Foliage Color: |
Green |
| Fruit/Seed Abundance: |
Medium |
| Fruit/Seed Period Begin: |
Spring |
| Fruit/Seed Conspicuous: |
No |
| Fruit/Seed Period End: |
Spring |
| Fruit/Seed Color: |
Brown |
| Fruit/Seed Persistence: |
No |
| Fire Tolerance: |
Medium |
| Foliage Texture: |
Coarse |
| Growth Form: |
Single Stem |
| Growth Habit: |
Tree |
| Growth Rate: |
Moderate |
| Height at 20 Years, Max. feet: |
12 |
| Height, Mature (feet): |
95 |
| Leaf Retention: |
No |
| Low Growing Grass: |
No |
| Life Span: |
Long |
| Max. Planting Density/Acre: |
800 |
| Min. Planting Density/Acre: |
300 |
| pH (Maximum): |
7.2 |
| pH (Minimum): |
4.5 |
| Precipitation (Minimum): |
25 |
| Resprout Ability: |
Yes |
| Root Depth, Min. (inches): |
40 |
| Salt Tolerance: |
None |
| Shape and Orientation: |
Erect |
| Small Grain: |
No |
| Seed per Pound: |
7000 |
| Seed Spread Rate: |
Slow |
| Seedling Vigor: |
Low |
| Temperature, Minimum (F): |
-53 |
| Toxicity: |
None |
| Vegetative Spread Rate: |
None |
| Propagation: |
Bare Root, Container, Seed |
| Palpable: (eatable) |
Browse Animal (Low) |
| Uses: |
Lumber, Firewood (Med) |
| Category: |
Dicot |
| Division: |
Magnoliophyta |
| Class: |
Magnoliopsida |
| Order: |
Urticales |
| Family: |
Ulmaceae |
| Genus: |
Ulmus |
