Hypericum perforatum
Perforate St. John's Wort
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Perforate St. John's Wort (Hypericum perforatum) - Description
Lemon-scented yellow flowers used in dyes. Not safe for consumption. Plant outdoors after danger of frost.
Perforate St. John's Wort (Hypericum perforatum) - Blooming
Flowers range in color from yellow to gold, blooming in the mid-summer. Blooms apear on new growth.
Perforate St. John's Wort (Hypericum perforatum) - Growth
Does best in full sun but in the hottest climates will require partial shade. These plants grow especially well in mild, moist climates. Evergreen species should be sheltered from cold, dry, winter winds.
Perforate St. John's Wort (Hypericum perforatum) - Planting
Sow the seeds in the autumn, but be aware that the seeds may not come true. Alternately, you can take softwood cuttings in the spring, or half-hardened cuttings in the summer.
Perforate St. John's Wort (Hypericum perforatum) - Pest
Rust is an issue with St. Johnswort. Remove any affected stems and leaf litter. Avoid watering at night especially if watering is done overhead. By watering in the morning, any moisture on the leaves will evaporate quicker in the sun giving less time for fungal spore germination.
Perforate St. John's Wort (Hypericum perforatum) - Interesting facts
Long used in traditional herbalism, St. John's-wort is thought to be useful to treat mild depression. Evidence of its efficacy, however, is mixed. Its use is shown to reduce the effectiveness of oral contraceptives.
Perforate St. John's Wort (Hypericum perforatum) - Soil and irrigation
Most North American species prefer damp conditions.
