Slender Greenthread
Thelesperma simplicifoliumnative · Hill Country
Slender Greenthread is a perennial wildflower native to the Texas Hill Country that grows 1–2 ft tall and 1.5 ft wide. It wants full sun and low water, and handles caliche and clay soil. Blooms yellow in May–Sep. Deer rarely browse it. Good for birds.
Will it grow in your yard?
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The facts
4 sources- Type
- Perennial wildflower
- Sun
- Full sun (6–8 hrs of direct sun)
- Water
- Low
- Height
- 1–2 ft
- Spread
- 1.5 ft
- Bloom
- May–Sep · yellow
- Foliage
- Deciduous or dies back in winter
- Soil
- Takes caliche and clay · recorded on caliche, clay, dry, limestone, loam, sand, well drained
- Deer
- High — deer rarely browse it
- Wildlife
- Supports birds
Where it grows
Recorded in these EPA Level IV ecoregions in the Austin and Hill Country launch area:
Balcones CanyonlandsLlano UpliftEdwards Plateau Woodland
1,000 occurrence records in Central Texas (GBIF).
Can you buy it?
Also grows here — hard to find. Native and recorded growing in Central Texas, but not on the grower stock lists we read. Sourcing varies: some are stocked widely, others you will have to hunt for.