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Giant Hyssop is a tall and graceful Saskatchewan native perennial can reach up to 5-6 feet tall. It features spikes of beautiful purple flowers on tall stems. The bright green leaves and lovely fragrance make it a stunning addition to any garden. Giant Hyssop attracts bees, butterflies, and hummingbirds, making it a perfect choice for any pollinator garden. Get ready to add a touch of elegance and nature to your garden with these amazing seeds. Packet contains ~150 seeds.


  • perennial to zone 3
  • flowers in second year
  • full sun, can tolerate part-shade
  • mature height 5-6 feet (150-180 cm)
  • blooms mid-summer

Giant Hyssop Seeds

  • Start giant hyssop seeds indoors 8-10 weeks prior to your last frost day.

    Cold stratification will improve germination. Place seeds in a moist paper towel inside a plastic bag or container. Keep in the fridge for 2-3 weeks before seeding.

    Press seeds into soil and cover lightly. Keep moist until germination in ~14-21 days.

    Transplant after risk of frost has passed in a sunny location with plants spaced 12-18 inches (30-45 cm) apart.

  • Agastache urticifolia

    Also known as agastache, blue giant hyssop, fragrant giant hyssop

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