Hypericum kalmianum 'Ames'

St. John's Wort

Ordering has concluded for the season. The plant selection on our website is what is overwintered at the nursery. Our Spring 2022 plant and product catalog will be available later this winter.
St. John's wort is a sun loving shrub with upright branching and bright yellow flowers that grows in a dense mound to 2-3' tall. Native to many parts of North America. 'Ames' was developed at Iowa State University for improved winter hardiness.
Secondary Name:
St. John's Wort
Plant Type:
Deciduous Shrubs
Hardiness Zone:
North East/Great Lakes
Sun Exposure:
Ultimate Height:
HT 2-3'
Ultimate Spread:
SP 2-3'