Purple Giant Hyssop
Purple Giant Hyssop (Agastache scrophulariifolia) is a towering, pollinator-friendly native perennial that adds deer resistant grace and ecological value to the summer and fall garden. Ideal for naturalistic borders, pollinator gardens, and meadow plantings where height, color, and wildlife support are key.
From mid-summer through fall, this plant produces long plumes of soft purple to white flowers, which attract native bees, butterflies, and hummingbirds in droves. Its anise-scented foliage adds a fragrant touch, and the cylindrical seed heads provide visual interest in the winter garden.
Despite its size—often reaching 4 to 6 feet tall—Purple Giant Hyssop rarely flops and remains upright even in rich soils. If a more compact form is desired, it can be cut back in early summer to reduce height.
Why Choose Purple Giant Hyssop?
- Pollinator magnet – Blooms for weeks, feeding bees, butterflies & hummingbirds.
- Fragrant & ornamental – Anise-scented foliage and striking seed heads.
- Tall but tidy – Stands upright without staking, even in rich soil.
Plant Purple Giant Hyssop in full sun to light shade and enjoy a stately, long-blooming native that supports wildlife and brings vertical elegance to your garden.
- As a relative short-lived perennial, consider letting a few seedlings to become established every couple of years to allow this awesome plant to persist in your garden
- If spread becomes an issue, however you may also need to remove some seedlings before they become established
- Deadhead spent flowers to prolong bloom time
- Consider chopping well established Purple Giant Hyssop roughly in half in early summer to reduce overall height and increase bushiness
- Though rarely required, you may consider staking taller stems of Purple Giant Hyssop to improve their stance
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