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Blues Festival® St. John's-Wort Hypericum kalmianum

  • Hardy Zones
    • 4 - 7
  • Exposure
    • Sun
  • Season
    • Spring
    • Summer
  • Mature Size
    • 24 - 36 Inches
Proven Winners® Shrubs
Blues Festival® St. John's-Wort Hypericum kalmianum
Sun 24 - 36

Features

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 Blooming
Drought Tolerant
Salt Tolerant
Attracts: 
Bees
Resists: 
Deer
Native to North America

Characteristics

Plant Type: 
Shrub
Shrub Type: 
Deciduous
Height Category: 
Medium
Garden Height: 
24 - 36 Inches
Spacing: 
24 - 48 Inches
Spread: 
24 - 36 Inches
Flower Colors: 
Yellow
Foliage Colors: 
Blue
Foliage Colors: 
Green
Foliage Shade: 
Blue-green
Habit: 
Mounded
Container Role: 
Thriller

Plant Needs

Light Requirement: 
Sun
Maintenance Category: 
Easy
Blooms On: 
New Wood
Bloom Time: 
Early Summer
Bloom Time: 
Mid Summer
Bloom Time: 
Late Summer
Hardiness Zones: 
4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b
Water Category: 
Average
Uses: 
Landscape
Uses: 
Mass Planting
Uses Notes: 

Landscapes

Maintenance 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
  • 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.

    Outstanding My favorite plant, I recommend to others all the time and explain the reasons why I like it so much.
    K Forsyth
    Seattle
    Washington
    United States
    1 week ago
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