Hypericum kalmianum Sunny Boulevard ('Deppe') (PBR)
St. John's wort
- Position: full sun or partial shade
- Soil: moderately-fertile, moist but well-drained soil
- Rate of growth: average
- Flowering period: July to October
- Hardiness: fully hardy
If you like lots of flowers over a long time, but also want something that is easy to grow, then this should definitely go on your wishlist. It is a recent introduction, and is a compact form, so forms a low dome of fresh green semi-evergreen foliage. The golden yellow flowers start to appear in early to midsummer and then carry on non-stop until well into autumn. A tough little plant, once established it will become tolerant of drought and neglect.
- Garden care: After flowering lightly trim back shoots that spoil the symmetry of the plant. After pruning apply a generous 5-7cm mulch of well-rotted garden compost or manure around the base of the plant.