Hypericum kalmianum Sunny Boulevard® (Kalm St. Johns Wort)
Free-flowering, Hypericum kalmianum Sunny Boulevard® (Kalm St. John’s Wort) is a compact, tightly branched, rounded shrub with showy, rich yellow flowers from mid to late summer. While small, they are produced in such quantities that they literally cover the plant. Each cup-shaped flower presents 5 petals surrounding a prominent tuft of golden stamens.
Free-flowering, Hypericum kalmianum Sunny Boulevard® (Kalm St. John's Wort) (Kalm St. John's Wort) is a compact, tightly branched, rounded shrub with showy, rich yellow flowers from mid to late summer. While small, they are produced in such quantities that they literally cover the plant. Each cup-shaped flower presents 5 petals surrounding a prominent tuft of golden stamens. Rich in nectar, they are a favorite of butterflies, bumblebees, or other pollinators. The foliage of willow-like dark green leaves provides a lovely backdrop for the bright golden blossoms. This deer-resistant little shrub is perfect for adding bright summer color to the garden.
- Grows up to 2-3 ft. tall and wide (60-90 cm)
- A full sun to part shade lover, this plant is easily grown in medium moisture, well-drained soils. Prefers moist, rich, sandy loams but tolerates poor, rocky or wet soils. Drought and salt tolerant.
- Low maintenance, this plant is also generally pest and disease free. Deer resistant.
- Perfect as a specimen or massed in borders, rock gardens, slopes, naturalized areas. Makes a pretty hedge.
- Prune as needed to shape after flowering.
Requirements
| Hardiness | 4 – 8 |
|---|---|
| Climate Zones | 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 10 |
| Plant Type | Shrubs |
| Plant Family | Hypericum – St John's Wort |
| Exposure | Full Sun, Partial Sun |
| Season of Interest | Summer (Mid,Late) |
| Height | 2' – 3' (60cm – 90cm) |
| Spread | 2' – 3' (60cm – 90cm) |
| Spacing | 24″ – 48″ (60cm – 120cm) |
| Water Needs | Average |
| Maintenance | Low |
| Soil Type | Clay, Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Moist but Well-Drained, Well-Drained |
| Characteristics | Cut Flowers, Showy |
| Tolerance | Deer, Drought, Dry Soil, Salt |
| Attracts | Bees, Birds, Butterflies |
| Garden Uses | Banks and Slopes, Beds and Borders, Hedges and Screens |
| Garden Styles | Gravel and Rock Garden, Informal and Cottage, Prairie and Meadow |