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Hypericum cerastioides

Family: hypericaceae
Common name(s): Grey-leaf St. John's Wort
Synonym(s): Hypericum cerastoides
Hardiness ratings: USDA zone 6~7b - 10

General resources

• Wikipedia. Online encyclopedia entry (if defined).
• Google images. Web search for photographs.
• The Plant List. Taxonomical lookup
• Catalogue of Life. Taxonomical lookup
• Dave's Garden. Search the extensive PlantFiles database.

Links for Hypericum cerastioides

• Annie's Annuals: Hypericum cerastoides 'Silvana' (on archive.org) - Catalog page with photo, basic horticultural information, and noteworthy features. (zone 6-10) (2 photos)
• Denver Botanic Gardens - Description, native range, and cultural requirements. (additional pages for other varieties) (1 photo). Also a page for 'Silvana'.
• Garden.org - Community-assembled plant profile (3 photos)
• Ontario Rock Garden Society - Germination information (use search on page to find this taxon)
• Plant Delights Nursery - Catalog page with photo, horticultural basics, and descriptive blurb. (zone 7b-10) (1 photo)
• Trees and Shrubs Online - Reference page curated by the International Dendrology Society with descriptive characteristics and horticultural notes.