Arizona Sunflowerweed
Tithonia thurberi
- Native to:
- Mexico, United States
iNaturalist: © danwolgast (iNaturalist #125164009)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Tithonia
- Species:
- Tithonia thurberi
- USDA Symbol:
- TITH
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Forb/herb
- Height:
- 200 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- jul,aug,sep,oct
- Bloom Colors:
- orange, yellow
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
Garden & Ecology Notes
- Wildlife Value:
- butterflies, bees
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- well-drained, sandy or rocky soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- native to arid regions, prefers full sun
Propagation & Germination
Pre-treatment: Immerse in 80-100°C water for 30-60 seconds then place in cold water to cool.
Establishment: Information regarding germination of T. thurberi is largely unavailable. The protocol is based on the closely related species T. diversifolia. Germination rates for seeds stored for 12 months increased further to 80-100% following the hot water treatment.
Source: npn.rngr.net