Sunny Boulevard® St. John's Wort Hypericum kalmianum
- Sun
- Summer
This plant is hardy in zones 4 - 8
Zones are based on the average annual extreme minimum 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 the number in the green box below is within the zone range listed for the plant, it will be hardy for you and thrive in your climate.
- 4
- 5
- 6
- 7
- 8
What is my hardiness zone?
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DETAILS
FEATURES
Easy, durable yellow flowers all summer long.
This tightly branched shrub is noted for its long bloom time, beginning in July and continuing until September. The flowers are rich yellow, small but numerous, and the leaves are willow-like. This is an excellent plant for adding bright color to landscapes all summer long. Native to North America. Blue Ribbon Winner, UC Davis Landscape Irrigation Trials.
Winter InterestDrought TolerantSalt TolerantAttracts:BeesResists:DeerNative to North AmericaCHARACTERISTICS
Plant Type:ShrubShrub Type:DeciduousHeight Category:MediumGarden Height:24 - 36 Inches61cm - 91cmSpacing:36 - 48 Inches 91cm - 1.2mSpread:24 - 36 Inches 61cm - 91cmFlower Colors:YellowFlower Shade:YellowFoliage Colors:GreenFoliage Shade:Dark GreenHabit:MoundedContainer Role:ThrillerPLANT NEEDS
Light Requirement:SunThe 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).
Maintenance Category:EasyBlooms On:New WoodBloom Time:Early SummerMid SummerLate SummerHardiness Zones:4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8bWater Category:AverageUses:ContainerLandscapeMass PlantingUses Notes:Groupings, masses, perennial or shrub borders, hedges. Great for adding bright summer color to the garden.
Maintenance Notes:Easily grown in average, medium, well-drained soils. Prefers rich, sandy loams. Tolerant of some drought. Northern gardeners should mulch roots in the winter. Fertilize in early spring by applying a slow release fertilizer specialized for trees & shrubs. Follow the label for recommended rate of application. Prune as needed to shape after flowering.
Sunny Boulevard® Hypericum kalmianum 'Deppe' USPP 20,045, Can 3,587PICTURES AND INFORMATION COPIED FROM PROVEN WINNERS