St. John’s Wort seeds are easy to grow.
Plant the herb seeds indoors 6 – 8 weeks before the last frost, or outside after danger of frost has passed.
Press the Hypericum seeds into the soil, but do not cover it as the seed will germinate better with light. Transplant the Hypericum seedlings when they are 2 – 3 inches (5-8 cm) tall. The plants will tolerate most any soil conditions but prefer moist and light soils.
Fertilizer is only necessary in the poorest of soils, and water in prolonged drought times.