Hypericum calycinum

(St John's Wort)


$8.99


Hardiness Zones:

 5a  5b  6a  6b  7a  7b  8a  8b  9a  9b

Quick Overview:

Hypericum calycinum is a stoloniferous subshrub or shrublet, typically growing 12″ (less frequently to 18″) high and 24″ wide, which is frequently planted as a ground cover. Features large, rose-like, 5-petaled, yellow flowers (2-3″ diameter) having numerous, bushy stamens with reddish anthers. Flowers appear singly or in groups of 2-3 and cover the plant in summer. Oval to oblong, distinctively net-veined (from beneath) leaves (to 4″ long) are rich green in sun but are a lighter, yellowish green in shade.

Mass as a ground cover. Rock gardens, border fronts, naturalized plantings. Edger for open woodland gardens. Also effective massed on slopes, hillsides or embankments for stabilizing soils. Plant under trees where it competes well with shallow tree roots. Allan Armitage calls the species “one of the finest ground covers available”.

Description

Easily grown in average, medium, well-drained soil in full sun to part shade. Tolerates wide range of soils. Thrives on sandy soils in full sun. Less floriferous in part shade. Evergreen in warm winter climates. Usually dies to the ground or suffers some tip dieback in cold winter climates, but blooms on new growth and comes back nicely each spring. In areas where it does not die in winter, shear or mow plants in late winter or early spring every 2-3 years to renew and induce new growth. Spreads rapidly by underground stems and can spread aggressively in ideal growing conditions. Plant 18″ apart for use as a ground cover

Additional information

Common Name

St John's Wort

Botanical Name

Hypericum calycinum

Container/Amount

1 gallon

Evergreen or Deciduous

Deciduous

Hardiness Zone

5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b

Growth Rate

Average

Light Requirements

Part sun to full sun

Height

8-12"

Width

to 2'

Soil Condition

Well-drained

Water Needs

Average

Blooming Period

Summer

Flower Color

yellow

Fragrance

No

Foliage Color

green

Deer Resistant

Yes

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