Silphium speciosum
Silphium speciosum
- Native to:
- Canada | ON | United States | AR, IA, IL, KS, MO, NE, NM, OK, TX, WY
GBIF: Darr, Ann
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Silphium
- Species:
- Silphium speciosum
Growth Characteristics
- Growth Habit:
- Forb/herb
- Height:
- 180 cm
- Drought Tolerance:
- Medium
- Bloom Months:
- jul,aug,sep
- Bloom Colors:
- yellow
Keystone Species Ranking
- Pollen Specialist Bee Keystone:
- ★★☆☆☆ Native pollen specialist bee species supported by this genus (NWF)
Garden & Ecology Notes
- Wildlife Value:
- birds, butterflies
Source: deepseek-v4-flash
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds benefit from cold moist stratification for 30-60 days to improve germination.
Source: deepseek-v4-flash