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Plant Families / Hypericum - St John's Wort


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Hypericum - St John's Wort

Noted for their bright yellow flowers adorned with prominent sunbursts of stamens, Hypericum can be annuals, perennials, shrubs, and trees, evergreen or deciduous. Usually small in stature, with rich green leaves, they are easy to cultivate and useful for mass plantings, groundcovers, informal hedges and borders. Full sun or part shade lovers, deer resistant, low-care, some varieties even reward you with attractive colorful berries in the fall. They associate well with other shrubs and low perennials in mixed borders, patio pots as well as being grown specifically for cut flowers.

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Hypericum androsaemum (Sweet Amber)

Compact and easy to grow, Hypericum androsaemum (Sweet Amber) is a small, bushy, deciduous shrub with upright, arching stems blanketed with oval, fresh green leaves, 4 in. long (10 cm). Clusters of showy, golden yellow flowers are on display from late spring to late summer. Each cup-shaped flower presents 5 petals surrounding a prominent tuft of golden stamens.

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Hypericum ascyron (Great St. John's Wort)

Robust and easy to grow, Hypericum ascyron (Great St. John's Wort) is an upright perennial boasting showy, bright yellow flowers, 2 in. wide (5 cm), adorned with a prominent bouquet of yellow stamens.

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Hypericum calycinum 'Golden Rule' (St. John's Wort)

Hypericum calycinum 'Golden Rule' (St. John's Wort) is a small shrub noted for its colorful foliage. Arranged along procumbent stems, the oval leaves emerge soft orange and buttery-yellow before turning to chartreuse-green. Unlike other varieties, its foliage will not revert to dark green.

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Hypericum calycinum (St. John's Wort)

Hypericum calycinum (St. John's Wort) is a small, semi-evergreen shrub with screaming bright yellow flowers, 3 in. wide (7 cm), for weeks from mid-summer to mid-fall. Each rose-like flower presents 5 petals surrounding a prominent tuft of bushy stamens and reddish anthers. Borne solitary or in clusters of 2-3 flowers, they appear in such quantities that they literally cover the foliage.

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Hypericum frondosum 'Sunburst' (St. John's Wort)

A popular cultivar, Hypericum frondosum 'Sunburst' (St. John's Wort) is a tight, dense, upright, mounded shrub with large, golden-yellow flowers, 2 in. across (5 cm), from early to mid-summer. Each cup-shaped flower presents 5 petals surrounding a prominent tuft of golden stamens. They are followed by reddish-brown fruits that ripen in fall and persist well into winter.

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Hypericum kalmianum (Kalm St. John's Wort)

Compact and easy to grow, Hypericum kalmianum (Kalm St. John's Wort) is a small semi-evergreen shrub with showy, golden yellow flowers blooming for about 6 weeks in mid to late summer. They are borne in flat clusters of 3-7 flowers, at the tips of upright branching stems. Each cup-shaped flower presents 5 petals surrounding a prominent tuft of golden stamens.

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Hypericum kalmianum Blues Festival® (Kalm St. John's Wort)

Noted for its blue-green foliage, Hypericum kalmianum Blues Festival® (Kalm St. John's Wort) is a compact shrub of dense, rounded habit with showy, golden yellow flowers from mid to late summer. They are borne in flat clusters at the tips of upright branching stems. Each cup-shaped flower presents 5 petals surrounding a prominent tuft of golden stamens.

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Hypericum kalmianum Cobalt-n-Gold™ (Kalm St. John's Wort)

Noted for its silver-green foliage, Hypericum kalmianum Cobalt-n-Gold™ (Kalm St. John's Wort) is a shrub of dense, neatly rounded habit with showy, golden yellow flowers in late spring or early summer. They are borne in flat clusters at the tips of upright branching stems and blanket the shrub. Each cup-shaped flower presents 5 petals surrounding a prominent tuft of golden stamens.

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Hypericum kalmianum Sunny Boulevard® (Kalm St. John's Wort)

Free-flowering, Hypericum kalmianum Sunny Boulevard® (Kalm St. John's Wort) is a compact, tightly branched, rounded shrub with showy, rich yellow flowers from mid to late summer. While small, they are produced in such quantities that they literally cover the plant. Each cup-shaped flower presents 5 petals surrounding a prominent tuft of golden stamens.

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Hypericum perforatum (Perforate St. John's Wort)

Hypericum perforatum (Perforate St. John's Wort) is an upright perennial with showy, star-shaped, yellow flowers, 1 in. wide (2.5 cm), from early to late summer. Borne in pyramidal clusters, they are produced in great numbers, up to 25–100 per stem. Each flower presents 5 petals, peppered with black dots around the edge and a prominent tuft of yellow tipped stamens.

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Hypericum prolificum (Shrubby St. John's Wort)

Hypericum prolificum (Shrubby St. John's Wort) is an upright deciduous shrub of compact, rounded habit with showy, bright yellow flowers, 1 in. wide (2.5 cm), adorned with a prominent bouquet of yellow stamens. Blooming profusely from early to late summer, the blossoms are borne singly or in few-flowered clusters and cover the shrub.

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Hypericum x hidcoteense 'Hidcote' (St. John's Wort)

Award-winning Hypericum x hidcoteense 'Hidcote' (St. John's Wort) is a dense, bushy, evergreen or semi-evergreen shrub boasting an abundance of large, golden-yellow flowers, 3 in. wide (7.5 cm), from early summer to early fall. Borne on reddish, twiggy stems, they are produced in great quantities and blanket the plant. Each saucer-shaped flower presents 5 petals surrounding a prominent tuft of golden stamens and orange anthers.

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Hypericum x inodorum 'Elstead' (St. John's Wort)

Hypericum x inodorum 'Elstead' (St. John's Wort) is a semi-evergreen or deciduous, upright shrub adorned with a profusion of showy clusters of star-shaped yellow flowers, 1 in. across (2.5 cm), from mid-summer to early fall. Each saucer-shaped flower presents 5 petals surrounding a prominent tuft of golden stamens.

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Hypericum x inodorum 'Magical Pumpkin' (St. John's Wort)

Hypericum x inodorum 'Magical Pumpkin' (St. John's Wort) is a semi-evergreen or deciduous, upright shrub adorned with a profusion of showy clusters of star-shaped yellow flowers from mid-summer to early fall. Each saucer-shaped flower presents 5 petals surrounding a prominent tuft of golden stamens.

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Hypericum x inodorum 'Magical Universe' (St. John's Wort)

Hypericum x inodorum 'Magical Universe' (St. John's Wort) is a semi-evergreen or deciduous, upright shrub adorned with a profusion of showy clusters of star-shaped yellow flowers from mid-summer to early fall. Each saucer-shaped flower presents 5 petals surrounding a prominent tuft of golden stamens.

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