Click for previous Image Image 1 of 3 Hypericum kalmianum St. Johnswort

Hypericum kalmianum 'Blue Velvet'

St. Johnswort

Plant Type:


Hypericum kalmianum ‘Blue Velvet’ – This came to us from Environmentals Nursery. The foliage is bluish on a domed mound, wider than tall, with lots of yellow flowers for a long period in summer. Useful among shrubs or in the perennial garden, it is an attractive and understated filler plant when not in bloom. For gardeners towards the northern end of its range spring planting is advised.



24-30 in


30-36 in


Deep Yellow
Item Description Price  
HYPBLUVE Hypericum kalm. 'Blue Velvet' (3.5 inch Square Press Fit Pot Extra Deep – 1.52 pints / 720 ml.) $15.00

Characteristics and Attributes for Hypericum kalmianum 'Blue Velvet'

Season of Interest (Flowering)

  • Summer

Season of Interest (Foliage)

  • Spring / Summer / Autumn

Nature Attraction

  • Honey Bees & Native Bees
  • Deer Resistant


  • Full Sun


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

Growth Rate in the Garden

  • Moderately Fast


  • Draining
  • Average

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.