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Hypericum kalmianum 'Blue Velvet'
St. Johnswort
Plant Type:
DECIDUOUS SHRUBSHypericum 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.
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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
Light
- Full Sun
Attributes
- Hedgerow
- Border
- Drought Tolerant
- Massing
- Wildlife Garden
- Foundation
- Specimen
- Shrub Border
Growth Rate in the Garden
- Moderately Fast
Soil
- 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.