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Plant profile · Austin & Hill Country

Ram's Horn

Proboscidea louisianica
native · Hill Country

Ram's Horn is an annual wildflower native to the Texas Hill Country that grows 1–2 ft tall and 2 ft wide. It wants full sun and low water. Blooms white, pink, yellow and purple in May–Sep. Good for nectar insects.

Will it grow in your yard?

Enter your ZIP. The finder checks Ram's Horn against your microclimate, then ranks it against your sun, your watering and deer pressure.

The facts

5 sources
Type
Annual wildflower
Sun
Full sun (6–8 hrs of direct sun)
Water
Low
Height
1–2 ft
Spread
2 ft
Bloom
May–Sep · white, pink, yellow, purple
Foliage
Deciduous or dies back in winter
Soil
Recorded on loam, moist, sand, well drained
Wildlife
Supports nectar insects

Where it grows

Recorded in these EPA Level IV ecoregions in the Austin and Hill Country launch area:

Balcones CanyonlandsLlano UpliftEdwards Plateau WoodlandNorthern Blackland PrairieLimestone Cut Plain

432 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.

also grows from seed It starts readily from seed, so a packet from a native-seed supplier, or seed collected with permission, is often the easiest way to get a plant no nursery pots.