Arizona Sunflowerweed
Tithonia thurberi
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Tithonia
- Species:
- Tithonia thurberi
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Forb/herb
- Height:
- 6-8 ft
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- aug, sep
- Bloom Colors:
- Yellow
Native Range
United States: Arizona
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
Germination Information
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