Hypericum kalmianum 'GEMO'
Hypericum kalmianum 'GEMO'
St. John´s Wort
St. John´s Wort
| SIZE/TYPE | low or groundcovering |
|---|---|
| USUAL HEIGHT | 0.8-1.3m |
| USUAL WIDTH | 0.8-1.3m |
| LEAVES | deciduous broadleaf |
| COLOUR OF LEAVES |
 green |
| FLOWERS | showy |
| COLOUR OF FLOWERS |
 yellow
|
| 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 |
|
| BELONGS TO CATEGORIES |
Deciduous broadleaf Summer blooms |
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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