Great Saint John's Wort Seeds – Hypericum pyramidatum

Great Saint John’s Wort (Hypericum pyramidatum) is a hardy perennial herb known for its bright yellow blooms and upright growth. This low-maintenance plant adds vibrant color to gardens while attracting pollinators such as bees and butterflies. It thrives in a variety of soil conditions and is ideal for borders, wildflower gardens, and natural landscapes.

Features and Specifications:

• Plant Type: Perennial herb

• Scientific Name: Hypericum pyramidatum

• Common Name: Great Saint John’s Wort

• Flower Color: Bright yellow

• Growth Habit: Upright and bushy

• Height: 2–4 feet tall at maturity

• Blooming Season: Summer (June to August)

• Light Requirements: Full sun to partial shade

• Soil Type: Well-drained to moderately moist soil

• Watering: Moderate; water regularly until established

• Hardiness Zones: USDA Zones 4–9

• Sowing Season:

  • Zones 4–6: Indoors from February to April, transplant outdoors in May

  • Zones 7–9: Direct sow from March to May or in early fall (September–October)

• Germination Time: 14–21 days under warm conditions (65–75°F)

• Spacing: 12–18 inches apart

• Uses: Ornamental landscaping, pollinator gardens, herbal borders