Warty Caltrop
Kallstroemia parvifloranative · Hill Country
Warty Caltrop is an annual wildflower native to the Texas Hill Country that grows 0–0.5 ft tall and 5 ft wide. It wants full sun and low water, and handles clay soil. Blooms orange and yellow in Apr–Nov. Good for birds.
Will it grow in your yard?
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The facts
4 sources- Type
- Annual wildflower
- Sun
- Full sun (6–8 hrs of direct sun)
- Water
- Low
- Height
- 0–0.5 ft
- Spread
- 5 ft
- Bloom
- Apr–Nov · orange, yellow
- Foliage
- Deciduous or dies back in winter
- Soil
- Takes clay · recorded on clay, limestone, loam, sand
- 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 WoodlandNorthern Blackland PrairieSouthern Post Oak SavannaFloodplains and Low TerracesLimestone Cut PlainSan Antonio Prairie
147 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.