Lady Bird Johnson Wildflower Center - The University of Texas at Austin information

 Native Plant Database

Hypericum prolificum


Shrubby St. Johnswort


Clusiaceae (St. John's-Wort Family)



Hypericum prolificum (Shrubby st. johnswort)
Bruso, George H.
Shrubby St. Johnís-wort is a very small, mound-shaped, deciduous shrub, to 3 ft. tall, with dense, upright branching and exfoliating, red to purple bark. Smooth, dark- to blue-green, fine-textured foliage becomes yellow-green in fall. Large, yellow flowers occur singly or in few-flowered clusters. A dry, dehiscent, three-valved capsule persists all winter.

This shrub adapts to a variety of moisture regimes and is even flood tolerant. It has no serious disease or insect problems. This species is pH adaptable but does extremely well in calcareous sites.

Image Gallery:

8 photo(s) available

Plant Characteristics

Duration: Perennial
Habit: Shrub
Leaf: Green
Fruit:
Size Class: 1-3 ft.

Bloom Information

Bloom Color: Yellow
Bloom Time: Jun , Jul , Aug

Distribution

USA: AL , AR , CT , DE , FL , GA , IL , IN , IA , KY , LA , ME , MD , MA , MI , MN , MS , MO , NJ , NY , NC , OH , OK , PA , RI , SC , TN , TX , VT , VA , WV , WI , DC
Canada: ON , QC
Native Distribution: NY to s. MI & IA, s. to GA, LA & OK
Native Habitat: Sandy, open woods; meadows; seepage slopes

Growing Conditions

Water Use: High
Light Requirement: Part Shade , Shade
Soil Moisture: Moist , Dry
Soil pH: Circumneutral (pH 6.8-7.2)
CaCO3 Tolerance: Low
Soil Description: Dry, rocky soils.

Benefit

Use Wildlife: Intermediate.
Conspicuous Flowers: yes

Last Update: 2012-12-07