Plant Calculator

Enter the approximate length and width of the area you will be planting and click 'Calculate' to determine how many Penstemon barbatus 'Ruby' you will need.

Approx. Length (ft):
Approx. Width (ft):

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

Summit Sweets™

Penstemon barbatus 'Ruby'

Beard Tongue

  • Large tubular red flowers
  • Re-blooms all the season
  • Suitable for borders, or containers

  • Category: Perennials
  • Hardiness Zone: 5-8
  • Height: 30-34 in
  • Spread: 24-30 in
  • Spacing: 26-32 in
  • Bloom Color: Red
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