Plant Calculator

Enter the approximate length and width of the area you will be planting and click 'Calculate' to determine how many Rudbeckia 'Treasure Trove' you will need.

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

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

Rudbeckia 'Treasure Trove'

Black-Eyed Susan

  • Large, gold, star-shaped flowers
  • Long blooming
  • Fast growing
  • Ideal for naturalizing

Proven Winners
  • Category: Perennials
  • Patent: PPAF, Can PBRAF
  • Breeder: Proven Winners
  • Hardiness Zone: 4-9
  • Height: 32-36 in
  • Spread: 36-42 in
  • Bloom Color: Gold
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