Prepared by Jennifer L. D’Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. Updated April 2019. Scientific name: Hypericum perforatum L. Common name(s): common St. Johnswort, St. Johnswort Link(s): USDA PLANTS Profile, Go Botany Images: (to see enlargements [PC]: click on image, then right click and choose “view image”)
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seedling in pruned field, mid-May
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early emergence, late April
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last year’s inflorescence, April
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pre-flower, early June
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lower leaf surface
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detail, spots and perforations
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flowerbuds, late June
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in flower, late July/early August
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flower detail
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fruits
Description: –
