Great St. Johnswort
Yellow flowers up to 2” across in July, oval-ish leaves up to 4” long, large smooth green seed pods develop, tolerates poor soil, easy to grow, host to caterpillars of the Wavy-lined Emerald (Synchlora aerate) & Gray Hairstreak (Strymon melinus), an unusual giant.
Plant Hardiness Zones: 3b-7a
Other names: (formerly Hypericum pyramidatum)
Native Range: ME to MN, south to DE and ne KS. Rare in CT, IN, ME, MD, MA, NH & VT
Germination - Easy: cold stratify 9 weeks, surface sow
Review or Finalize Your Order