Plant Calculator

Enter the approximate length and width of the area you will be planting and click 'Calculate' to determine how many Hypericum kalmianum 'Sunny Boulevard®' you will need.

Approx. Length (ft):
Approx. Width (ft):
*Distance Between Plants (in):

*Correct and successful spacing is complex and depends on project conditions.

Hypericum kalmianum 'Sunny Boulevard®'

St. John's Wort

  • Flowers are rich yellow, small but numerous
  • Very long bloom time, July to September
  • Deer resistant

Proven Winners
  • Category: Shrubs
  • Alternate Cultivar: 'Deppe'
  • Patent: PP20045, CBR 3587
  • Breeder: Proven Winners
  • Hardiness Zone: 4-8
  • Height: 24-36 in
  • Spread: 3-4 ft
  • Bloom Color: Yellow
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Critter Resistance
Deer Resistant
Exposure
Full Sun
Foliage Color
Green
Soil Moisture
Average Water
Attributes
Border or Bed
Drought Tolerant
Hedge
Long Blooming
Habit
Mounding
Season of Interest (Foliage)
Summer Bloomer