threadleaf giant hyssop
Agastache rupestris 'Apache Sunset'
Overview
Threadleaf Giant Hyssop (Agastache rupestris 'Apache Sunset') is an absolutely stunning ornamental plant. Its eye-catching foliage, consisting of slender gray thread-like leaves, is a beautiful complement to bright pink and orange blooms that appear in summer and last into fall. Its clay tolerant roots allow it to survive in challenging climates, making it an excellent addition to both sunny and partially-shaded gardens. Growing to nearly three feet in height, it creates a dramatic and eye-catching display in the garden while attracting pollinators with its showy blooms. Easy to care for, this versatile and beautiful species is a must-have for any garden enthusiast.
Care Guide
Watering
Water threaded giant hyssop plants about once per week, ideally in the morning. Water until the soil is moist and water begins to run from the bottom of the pot. Do not allow the soil to become soggy. During periods of very hot summer weather, water up to 2 times per week in the morning. Reduce watering during the winter months as plant growth slows down during this time.
Light
Threadleaf giant hyssop grows best in full sun, meaning at least 6 hours of sunlight, preferably during the most intense time of day (around midday). If grown in less than full sunlight, the plant may be weakened and more susceptible to disease and insects. In hotter climates, however, it may benefit from some filtered afternoon shade or morning sun. It’s important to remember that intense afternoon sun can be too much for the plant in certain climates.
Temperature
Hardiness zone 6–9.
Pruning
Threadleaf giant hyssop can be pruned at any time during the growing season. We recommend pruning it lightly in late winter, just before new growth emerges in spring, then again early in summer to encourage denser bushy growth. In general, prune no more than 1/3 of the plant, removing the tallest stems and branches to encourage horizontal branching and a fuller plant form. If necessary, lightly prune in late summer as well.
Propagation
Division, Cutting, Seed Propagation, Layering Propagation
Uses & Symbolism
Attracts: Hummingbirds, Butterflies.
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