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Gemo St. John's Wort

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This Danish cultivar is popular for its prolonged bloom period and refined foliage. Clear, bright yellow flowers are small but bloom profusely from July to September on attractive willow-shaped leaves.

Photo credit: Richard Shiell


  • Full Sun, Partial Sun

  • Moderate

  • Height
    3—5 feet

  • Spread
    2—4 feet

Availability: Out of stock



Follow a regular watering schedule during the first growing season to establish a deep, extensive root system. Feed with a general purpose fertilizer before new growth begins in spring. For a tidy, neat appearance, shear annually to shape.

Brand Monrovia
Botanical Name Hypericum kalmianum 'Gemo'
Plant Type Shrubs
Plant Subtype DECIDUOUS SUMMER FLOWERING SHRUB
Foliage Color Dark Green
Light Needs Full Sun, Partial Sun
Water Needs Moderate
USDA Cold Hardiness Zones 5 - 9
Height 3—5 feet
Spread 2—4 feet
Habit Round, Compact, Round
Special Uses Long Bloom Season
Landscape Uses Firescaping/Fire Wise, Road Salt
Flower Color Yellow
Bloom Time Summer

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