Family: Hypericaceae

Scientific Name: Hypericum calycinum

Common Name: Aaron's Beard


Aaron's beard (Hypericum calycinum) is a vigorous fast growing woody plant spreading by stolons. Produces a mass of yellow flowers in the summer.

Plant TypeShrubs Deciduous
Hardiness Zone5-8
Sunlightprefers full sun to part shade, producing more flowers in higher light conditions
Moisturetolerates moderate drought and dry conditions, prefers average to moist conditions
Soil & Siteprefers well drained not to dry soil, slightly acid, tolerates pour conditions
TemperatureIn severe winters the plant will die down to the roots. Reported to flower best in the cooler end of its hardiness zone.
Flowersyellow, 5 petaled, bore singly or in groups of 2-3 (cymes), dense center tuft of protruding yellow stamens, anthers will turn red later in the bloom period
Leavessimple, opposite dark green above, glaucous below and has purple fall foliage
Stemsprocumbent or spreading, stolons
Dimensions11-24" and spreads rapidly by underground stolons.
Maintenancecan be come invasive
Propagationcuttings, division
Native SiteNative to SE Europe and Asia minor.
Cultivar OriginIntroduced in 1676
Misc FactsAKA: St. John's Wort
Notes & Reference#226-Shrubs and Vines for American Gardens (Donald Wyman)
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