PlantHere

Plant profile · Austin & Hill Country

Roundseed St. Johnswort

Hypericum sphaerocarpum
native · Central Texas

Roundseed St. Johnswort is a shrub native to Central Texas that grows 1–2 ft tall and 2 ft wide. It wants full sun or part shade and low water, and handles clay soil. Blooms yellow in summer. Good for bees, butterflies and beetles.

Will it grow in your yard?

Enter your ZIP. The finder checks Roundseed St. Johnswort against your microclimate, then ranks it against your sun, your watering and deer pressure.

The facts

3 sources
Type
Shrub
Sun
Full sun to part shade (4–8 hrs of direct sun)
Water
Low
Height
1–2 ft
Spread
2 ft
Bloom
Summer · yellow
Foliage
Deciduous or dies back in winter
Soil
Takes clay · recorded on calcareous, clay, dry, gravelly, rocky, sand
Wildlife
Supports bees, butterflies and beetles

Where it grows

Recorded in this EPA Level IV ecoregion in the Austin and Hill Country launch area:

Northern Blackland Prairie

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.