Hypericum kalmianum 'GEMO' St. John´s Wort
size/type
low or groundcovering,low or groundcovering
usual height
0,8-1,3m
usual width
0,8-1,3m
leaves
deciduous broadleaf
colour of leaves
flowers
showy
colour of flowers
blooming time
July-September
location
full sun
soil type
any (acidic to alkaline)
soil moisture requirements
evenly moist but well-drained
USDA zone (lowest)
5 (down to -29°C)
winter protection
for zone 5+6
for zone 7
categorized
Description of the plant:
St. John’s Wort is a well know perennial from our meadows and fields. The gardeners, however, selected species which are shrubby and have additional features for common use in gardens. Gemo is a new variety of this group and comes from Denmark.It is a low, dense growing shrub with erect stems and rosemary-like green leaves. Each stem bears cymes of up to 7 saucer-shaped, 3-4 cm across, golden yellow flowers with profusion of stamens in the centre. Its starts blooming in July and continues until early autumn which makes it one of the most attractive and longest flowering shrubs of late summer.
Prune it in early spring – cut last year’s growths by a third or half. Grow these smaller hypericums in full sun, moderately fertile soil that is very well drained. Gemo is ideal for a rockery, too. Fully hardy to about -29°C (USDA zone 5).
Last update 14-08-2008
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GLOSSARY
- STANDARD QUALITY - Plants of this group are 1st class quality with number of branches and overall density adequate to their size and age, considering they were container grown.
- DE LUXE QUALITY - This label guarantees a luxurious quality of manually selected plants that, compared to their height and age, are exceptionally dense and beautiful.
- EXTRA - These plants are usually mature and bigger specimens with exceptional overall appearance.
- STANDARD (as described in the plant form) means a tree with a trunk of 190-210 cm and a crown at the top, unless specified differently. The commercial size for trees is their girth measured in the height of 1m from ground.
- HOBBY - These plants are of the same quality as our standard-quality plants but younger and therefore cheaper.
- SHRUB - a woody plant with branches growing bushy from the ground level.
- HALF-STANDARD or MINI-STANDARD - a small tree with shorter trunk, its size is usually specified.
- FEATHERED - These are trees with branches growing already from the base of the trunk and up along the stem.
- GRASSES and PERENNIALS - Sizes given usually read the diameter of the pot or the clump, as specified.
