Click for previous Image Image 1 of 2 Hypericum prolificum St. Johnswort

Hypericum prolificum

St. Johnswort

Plant Type:

DECIDUOUS SHRUBS

Hypericum prolificum – This wonderful St. Johnswort species produces masses of small deep yellow St. Johnswort flowers for a very long period in summer. What the flowers lack in size the shrub more than makes up in number, hence “prolificum”. This shrubby St. Johnswort is a bee magnet, abuzz with many species for all the many weeks it is in bloom. The warm brown exfoliating wood which remains attractive in winter supports multitudes of 3-sided seed capsules. These supply winter interest or may be cut and used in dried arrangements. We have ours planted with Spiraea x bumalda ‘Neon Flash’ and the two make a strong summer coupling. For gardeners towards the northern end of its range spring planting is advised.


Height:

54 in

Spread:

36 in

Colors:

Deep Yellow
Item Description Price  
HYPPROL Hypericum prolificum (3.5 inch Square Press Fit Pot Extra Deep – 1.52 pints / 720 ml.) $15.00


Characteristics and Attributes for Hypericum prolificum

Season of Interest (Flowering)

  • Summer

Season of Interest (Foliage)

  • Spring / Summer / into Autumn

Interesting Bark

  • Exfoliating

Autumn Interest

  • Fruit / Berries / Seed Heads

Nature Attraction

  • Deer Resistant
  • Honey Bees & Native Bees

Light

  • Full Sun

Attributes

  • Foundation
  • Border
  • Shrub Border
  • Drought Tolerant
  • Hedgerow
  • Massing
  • Specimen
  • Wildlife Garden

Growth Rate in the Garden

  • Moderately Fast

Soil

  • Draining
  • Adaptable

Origins

  • Eastern North America

Propagated By

  • Cutting Grown

Genus Overview: Hypericum

Common Name: St. Johnswort

St. Johnswort is easy, tough and dependable – they should be planted more! All have attractive sunny golden-yellow flowers, appreciate siting in full sun and planted in any decent garden soil that drains well, sandy soils are fine. They are untroubled in the north but apparently, according to Michael Dirr, they can be plagued farther south – where the cutoff is we do not know; we’re guessing the warm end of USDA zone 7. They are relatively underutilized and worthy of consideration if you live in a climate in which they will make you smile. All of the following offerings are cutting grown.