Tall Blacktip Ragwort
Senecio atratus
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Senecio
- Species:
- Senecio atratus
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 2-3 ft
- Bloom Months:
- may, jun, jul, aug, sep
- Bloom Colors:
- Yellow
Native Range
United States: Colorado, New Mexico, Utah, Wyoming
Keystone Species Ranking
- Bee Keystone:
- ★★☆☆☆ Based on number of native bee species using this genus for pollen and nectar (Source: National Wildlife Federation)
Reported Fauna Sightings
Bees: Frigid Bumble Bee (Bombus frigidus), Frigid Bumble Bee (Bombus frigidus), Two-form bumble bee (Bombus bifarius), Two-form bumble bee (Bombus bifarius)
Soil Requirements
- Soil Type:
- rocky, well-drained, nutrient-poor soil
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- native to high-altitude Andean regions
Germination Information
Pre-treatment: None required
Establishment: Only one seed germinated in the provided protocol, suggesting a potentially low germination rate. Seeds should be cleaned by removing them from heads.
Source: npn.rngr.net