November 14
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Plant Species of the genus Hypericum

Information about this genus
Name: Hypericum
Cultivation: CULTIVATION: Most species will thrive in sun or partial shade in good garden soil. While H. calycinum will take root along its prostrate branches in dry shade, it will also do well in partial shade. It is useful to hold steep banks in place. H. bucklei and H. olympicum are useful rock-garden plants and need sharp drainage. Most of the North American species prefer damper growing conditions. Evergreen species are best sheltered from cold drying winds. Propagate by sowing seed in autumn, however seed may not come true, as different species hybridize readily. Softwood cuttings can be taken in spring, and half-hardened cuttings in summer.
Description: There are more than 400 species within this genus of deciduous, semi-evergreen and evergreen annuals, herbaceous perennials, shrubs and a few trees. These occur worldwide in a variety of habitats. Some hypericums are used locally as medicinal plants. Hypericum species have simple smooth-edged leaves in opposite pairs and usually yellow 5-petalled flowers with a central bunch of many stamens.

Specie Vernacular Zone
acutifolium sharpleaf St. Johnswort
adpressum creeping St. Johnswort
ascyron great St. Johnswort
aureum
bissellii
boreale northern St. Johnswort
canadense lesser Canadian St. Johnswort
crux-andreae St. Peterswort
densiflorum bushy St. Johnswort
denticulatum coppery St. Johnswort
dissimulatum disguised St. Johnswort
dolabriforme straggling St. Johnswort
drummondii nits and lice
ellipticum pale St. Johnswort
frondosum 5-10
gentianoides orangegrass
glomeratum
gymnanthum claspingleaf St. Johnswort
humifusum trailing St. Johnswort
hypericoides St. Andrew's cross
Hypericum 3 inodorum 8-10
Hypericum ?Hidcote? 7-10
Hypericum ?Rowallane? 8-10
Hypericum addingtonii 8-10
Hypericum aegypticum 7-9
Hypericum androsaemum 6-9
Hypericum balearicum 7-9
Hypericum beanii 7-10
Hypericum calycinum 6-9
Hypericum canariense 9-10
Hypericum coris 7-9
Hypericum forrestii 5-9
Hypericum hookerianum 7-10
Hypericum kouytchense 6-10
Hypericum lancasteri 7-10
Hypericum leschenaultii 9-11
Hypericum maclarenii 7-9
Hypericum monogynum 9-10
Hypericum oblongifolium 9-11
Hypericum olympicum 6-10
Hypericum patulum 6-10
Hypericum pseudohenryi 6-9
Hypericum revolutum 9-11
Hypericum stellatum 6-9
Hypericum subsessile 7-10
kalmianum 2-8
lobocarpum fivelobe St. Johnswort
majus large St. Johnswort
mutilum dwarf St. Johnswort
oklahomense
perforatum common St. Johnswort
petiolatum
prolificum 4-9
pseudomaculatum false spotted St. Johnswort
punctatum spotted St. Johnswort
pyramidatum
spathulatum
sphaerocarpum roundseed St. Johnswort
splendens
stans
stragulum
subpetiolatum
tubulosum
turgidum
virgatum
virginicum
walteri



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