| Scientific Name: |
Ratibida pinnata |
| Other Scientific Names: |
Rudbeckia pinnata |
| Common Name: |
Grayheaded Coneflower |
| Other Common Names: |
|
| Duration of Life: |
Perennial |
| Bloom Color: |
Yellow |
| Soil Moisture: |
Mesic, Wet |
| Sun Requirements: |
Full, Partial |
| Plant Origin: |
Native |
| Soil Type prefered: |
Sand, Loam |
| Drought Tolerance: |
Medium |
| Flower Conspicuous: |
Yes |
| Soil Fertility Requirement: |
Medium |
| Moisture Use: |
Medium |
| Shade Tolerance: |
Intolerant |
| Growing Zone: |
3, 4, 5, 6, 7, 8 |
| Active Growth Period: |
Spring, Summer |
| Anaerobic Tolerance: |
None |
| Calcium Carbonate Tolerance: |
Low |
| Bloom Period: |
Late Spring |
| Commercial Availability: |
Routinely Available |
| Competitivness: |
Aggressive |
| Cold Stratification Required: |
No |
| Best established via: |
Seed, Plant |
| Fall Conspicuous: |
No |
| Frost Free Days, Minimum: |
100 |
| Foliage Color: |
Green |
| Fruit/Seed Abundance: |
Medium |
| Fruit/Seed Period Begin: |
Summer |
| Fruit/Seed Conspicuous: |
Yes |
| Fruit/Seed Period End: |
Fall |
| Fruit/Seed Color: |
Brown |
| Fruit/Seed Persistence: |
Yes |
| Fire Tolerance: |
High |
| Foliage Texture: |
Coarse |
| Growth Form: |
Single Crown |
| Growth Habit: |
Forb/herb |
| Growth Rate: |
Moderate |
| Height, Mature (feet): |
4 |
| Leaf Retention: |
No |
| Low Growing Grass: |
No |
| Life Span: |
Moderate |
| Max. Planting Density/Acre: |
4800 |
| Min. Planting Density/Acre: |
2700 |
| pH (Maximum): |
6.8 |
| pH (Minimum): |
5.6 |
| Precipitation (Minimum): |
18 |
| Protein Potential: |
Low |
| Plant Spacing: |
12 to 30 inches |
| Resprout Ability: |
No |
| Root Depth, Min. (inches): |
14 |
| Salt Tolerance: |
None |
| Shape and Orientation: |
Erect |
| Flowering Months: |
July, August |
| Small Grain: |
No |
| Seeds Per Ounce: |
31,000 |
| Seed per Pound: |
1000000 |
| Seed Spread Rate: |
Slow |
| Seedling Vigor: |
Medium |
| Temperature, Minimum (F): |
-38 |
| Toxicity: |
None |
| Vegetative Spread Rate: |
None |
| Found in Old fields: |
Yes |
| Found in Virgin fields: |
No |
| RGR Bloom Begin: |
07/14 |
| RGR Bloom Peak: |
08/01 |
| RGR Seed Collection Peak: |
09/14 |
| Propagation: |
Container, Seed |
| Palpable: (eatable) |
|
| Uses: |
Fodder |
| Where Found in S.E. MN: |
|
| Pronounciation: |
(ruh-TIB-ih-duh pin-AH-tuh) |
| Category: |
Dicot |
| Division: |
Magnoliophyta |
| Class: |
Magnoliopsida |
| Order: |
Asterales |
| Family: |
Asteraceae |
| Genus: |
Ratibida |
