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St. John’s Wort - Hypericum tenuifolium

St. John’s Wort - Hypericum tenuifolium


•Status in Florida: Native

•Size at Maturity: Typically grows 1 to 2 feet tall and wide.

•Phenology: Perennial herb with slender stems, narrow leaves, and bright yellow, star-shaped flowers that bloom in summer.

•Life Cycle: Perennial

•Bloom Season: Summer

•Deciduous, Dioecious, Evergreen: Evergreen

•Sunlight Requirements: Full sun to partial shade

•Soil Texture: Well-drained sandy or loamy soils

•Soil pH: Tolerant of a wide range, but prefers slightly acidic to neutral (pH 6.0-7.0)

•Moisture Requirements: Prefers moderately moist soil, but can tolerate drought once established

•Tolerance to Salt Spray: Low tolerance

•Recommended Landscape Uses: Butterfly gardens, native plant gardens, pollinator gardens, naturalized areas

•Maintenance Tips: Low maintenance; prune as needed to maintain shape and remove dead or damaged foliage

•Considerations: St. John’s Wort may self-seed and spread in favorable conditions, but it is not typically invasive.

•Deer and/or Rabbit Resistance: Moderately resistant; typically not preferred by deer or rabbits

•Edible: The leaves and flowers of some St. John’s Wort species are edible and have been used in herbal teas, but caution should be exercised as some species may have toxic properties.

•Medicinal Uses: Traditionally used in herbal medicine for its purported antidepressant and anti-inflammatory properties, but use caution as some species may have toxic properties.

•Toxicity to Pets: Some species of St. John’s Wort may be toxic to pets if ingested in large quantities.

•Florida Native Companion Plant: Blanketflower (Gaillardia pulchella), Tickseed (Coreopsis spp.)

•Wildlife Benefit: Attracts pollinators such as bees and butterflies; provides habitat and food for various insects

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