I adore this subshrub, but it's the bumble bees that get the last say. The flowers are literally quivering from the bumble bee excitement which completely cover the shrub. Awesome. The glaucous blue foliage and mounding habit are icing. Oh, and long bloom time! Not sure why the zones don't include zone 8. I'm zone 8 in western Washington ('8b' in most years, but '8a' this winter), and it's been a spectacular performer for the last 5 years. They don't get supplemental summer water after establishment in full sun and free draining soil.
The optimum amount of sun or shade each plant needs to thrive: Full Sun (6+ hours), Part Sun (4-6 hours), Full Shade (up to 4 hours).
This plant is hardy in zones 4 - 7
Zones are based on the lowest average temperature an area is expected to receive during the winter. They are used to determine whether a plant is likely to be perennial in your area. If your zone is equal to or higher than the zone listed for the plant, it will be hardy for you and thrive in your climate.
My Current Zone
Cool blue foliage for sunny landscapes!
Attractive blue-green leaves contrast with bright yellow sunburst-like flowers in July and August. This deer-resistant little shrub is a very low-maintenance and colorful option for landscaping, especially edging beds and walkways, or as a ground cover. And it's native to North America!
Top three reasons to grow Blues Festival St. John's-wort:
- colorful contrasting flowers and foliage
- loves dry, sunny spots
- Very low-maintenance: rarely needs pruning, never needs deadheading, stays neat and tidy.Long BloomingDrought TolerantSalt TolerantAttracts:BeesResists:DeerNative to North America
CharacteristicsPlant Type:ShrubShrub Type:DeciduousHeight Category:MediumGarden Height:24 - 36 InchesSpacing:24 - 48 InchesSpread:24 - 36 InchesFlower Colors:YellowFoliage Colors:BlueFoliage Colors:GreenFoliage Shade:Blue-greenHabit:MoundedContainer Role:Thriller
Plant NeedsLight Requirement:SunMaintenance Category:EasyBlooms On:New WoodBloom Time:Early SummerBloom Time:Mid SummerBloom Time:Late SummerHardiness Zones:4a, 4b, 5a, 5b, 6a, 6b, 7a, 7bWater Category:AverageUses:LandscapeUses:Mass PlantingUses Notes:
Best in moist, well-drained soils. Will tolerate some drought once established. May be trimmed to shape in early spring.Blues Festival® Hypericum kalmianum 'SMHKBF' USPP 25,795, Can 5,306
K ForsythWashingtonUnited States6 weeks ago