Hypericum kalmianum

Smaller hardy shrub, very interesting for its peculiar yellow flowers, lasting a couple of weeks during the summer. Foliage is bluish-green.
English name : Kalm St-Johnswort
Latin name: Hypericum kalmianum
Sunshine : Sun
Height at maturity : 0.90 meter
Width at maturity : 0.90 meter
Zone 4
Month of flowering : 07

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