Hypericum prolificum

shrubby St. Johnswort add to wishlist

Plant types and subtypes: Trees & Shrubs, Shrubs, Deciduous

Light Requirements: sun, part-sun, part-shade

Water Use: medium

Soil Moisture: dry, moist

Soil Description: average, loam, clay, sand, gravel/rock

Height: 2'-4'

Bloom Time: June, July, August

Bloom Color: yellow

Leaf Color: green

Hardiness Zone: 4, 5, 6, 7, 8

Additional Tags: attracts bees, deer resistant, drought tolerant, hedging plant, mounding, ornamental foliage

Hypericum prolificum (shrubby St. Johnswort)
  • Hypericum prolificum (shrubby St. Johnswort)
  • Hypericum prolificum (shrubby St. Johnswort)
  • Hypericum prolificum (shrubby St. Johnswort)
  • Hypericum prolificum (shrubby St. Johnswort)

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Description

Hypericum prolificum

Also known as:

shrubby St. Johnswort

,

Scientific Synonyms:

Hypericum spathulatum

Description

Hypericum prolificum is a low-growing, compact deciduous shrub with neat, rounded habit. It typically grows no taller than 4', and the same across, with dense, light green foliage. The showy, bright yellow flowers are produced either singly or in terminal clusters, and are about 1" across. The specific epithet - prolificum - refers to the conspicuous stamens that are so numerous as to overshadow the petals.

Cultivation

Shrubby St. Johnswort is very easy to grow, adaptable, and trouble free. It is not particular about soil and will tolerate poor, thin, sandy or rocky ones, and even heavy clay. Established plants will withstand short periods of inundation as well as extended dry spells. Flower production is best in full sun, but it performs also quite well in part-shade. The blooming period is extensive, lasting up to 2 months during the summer. Any pruning should be done in early spring. Zones 4-8

Propagation

Can be propagate from seed, without special treatment, although the process is slow. Easiest to propagate from softwood cuttings.

Additional Notes

This species is attractive when grown as a specimen, as well as planted in large groups. It can be used as a low-growing hedge or foundation planting, and is also an excellent choice for erosion control. It is resistant to deer and other herbivores.

Native Range & Classification

Recorded County Distribution: USDA data

Native Range:
AL, AR, CT, DC, DE, FL, GA, IA, IL, IN, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, NH, NJ, NY, OH, OK, PA, RI, SC, TN, TX, VA, VT, WI, WV

USDA Endangered Status:

  • Endangered: NJ
  • Threatened: NY

Classification

Kingdom Plantae Plants
Subkingdom Tracheobionta Vascular plants
Superdivision Spermatophyta Seed plants
Division Magnoliophyta Flowering plants
Class Magnoliopsida Dicotyledons
Subclass Dilleniidae
Order Theales
Family Clusiaceae Mangosteen family
Genus Hypericum St. Johnswort
Species Hypericum prolificum shrubby St. Johnswort