Purple Giant Hyssop sets soft plumes of the palest purple flowers that top out at 6 feet, soaring above most other plants in the garden. The individual blossoms open over a period of several weeks in the fall.

From seed, it is easy to grow, but be mindful that the first blooms will typically appear in the second year. With the purple giant hyssop, the best practice is to start seeds indoors about 8 weeks before the latest frost date in your location. When you’re ready to transplant outdoors, find a spot that gets plenty of direct sunlight. Plant in dry, sandy, light, rocky soil and water moderately. Be mindful that it does not like to be in a crowded area; leave lots of room for it to grow without competition.

Quick Growing Guide

Botanical Name: Agastache scrophulariifolia

Also Called: Figwort Giant Hyssop

En français: Agastache à feuilles de scrofulaire

Colour:

Blooms:

Water: Medium-Wet, Medium, Medium-Dry

Hardiness Zones:

Pruning Giant Hyssop

Pruning is an essential step in developing your hyssop for a fresh bloom and a healthy plant. To revitalise a purple giant hyssop plant, cut the stems to as low as 2 inches (5 cm) from the ground. The pruning scissors or knife must be sterilised. This task is best done in early spring.

Pollinators

The long bloom time, combined with high nectar content, makes this plant highly attractive to bees and butterflies, including the endangered Rusty Patched Bumblebee.

Birds feed on the seeds that follow.

Comments

Leave a Reply

More From Gardening Calendar

How to Care and Propagate The Superb Calathea

Discover the wonderful Calathea varieties, their care and their dazzling array of colorful leaves for your landscape and indoor plant! Get to know their care, lighting, watering and fertilizing needs – as well as propagation tips – to enjoy their beauty and reap the rewards of their circadian rhythm.

Calendula Seeds In an Envelope

Learn easy tips for harvesting calendula seeds, the different colors you could find, the benefits of growing them in your own garden, and how to save the seeds for the next year. With calendula, you can get a colorful, tasty, pollinator-friendly garden–even on a dark and stormy night. Start your garden now and enjoy beautiful tomatoes, too.

Bumblebees and Seeds

I really I never realized how much I did not know about bumblebees. And, I am testing the pepper seeds to check their viability. was viable.

Canada Milk Vetch

Attract hummingbirds, birds, butterflies and bees with Canada Milk Vetch – a beautiful flower perfect for bouquets, heavy clay soils and winter flowerpots. Perfect for restoration gardens, erosion control and dry climates.