Widely adapted 20 in. tall plants thrive in cool or hot weather. Astello Indigo agastache produces long lasting, mint scented, deep blue flower spikes July through October. Flowers attract butterflies and are superb for cutting.
Deep green disease resistant leaves carry a root beer fragrance and plants stay healthy all season. Astello Indigo agastache can be grown as an annual in all zones and is a winter hardy perennial to zone 6. A Fleuroselect Gold Medal Winner.
Growing Astello Indigo Agastache Seeds
Sow agastache seed in cell packs or flats, press into soil but do not cover. Seeds need light to germinate. Kept at 70°F., germination is in 14-30 days. Transplant seedlings into the garden 12-18 in. apart after all danger of frost.
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Free shipping on U.S. orders over $60.00.
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Standard U.S. shipping is $5.99.
Priority U.S. shipping is $9.99.
International Shipping Rates
Shipping to Canada is $9.99.
International shipping to all other countries is $14.99.
We guarantee all the seeds we sell for one full year from the date of purchase. If you are unsatisfied with any seeds purchased from Swallowtail Garden Seeds, we will issue a refund. For customers in the U.S., we can send one-time replacement packets or issue a refund.