Telegraphweed
Heterotheca grandiflora
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Heterotheca
- Species:
- Heterotheca grandiflora
Growth Characteristics
- Life Cycle:
- Annual | Biennial | Perennial
- Growth Habit:
- Forb/herb
- Height:
- 3-4 ft
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- may, jul, nov
- Bloom Colors:
- yellow
Native Range
United States: Arizona, California, Hawaii, Nevada, Utah
Keystone Species Ranking
- Bee Keystone:
- ★☆☆☆☆ Based on number of native bee species using this genus for pollen and nectar (Source: National Wildlife Federation)
Host Plant for Caterpillars
paradoxical grass moth (Heliocheilus paradoxus), Tischeria heteroterae, Gabb's Yellow (Charidryas gabbii)
Soil Requirements
- Soil Type:
- sandy, well-drained, nutrient-poor soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- native to dry, open areas; often found in disturbed sites
Germination Information
Pre-treatment: Seeds treated with dry heat at 120 C for 5 minutes resulted in decreased germination
Establishment: H. grandiflora is found within mattoral vegetation association of California. Avoid pre-treatment with dry heat as it decreases germination.
Source: npn.rngr.net