{"product_id":"renee-s-garden-delphinium-chinese-blue-mirror","title":"‘Heirloom Blue Mirror’ Chinese Delphinium Seeds","description":"\u003cp\u003eBlue Mirror carries true ultramarine in a form that stays compact and airy. Fine, lacy foliage is covered with sprays of small trumpet-shaped flowers, creating an 18–24-inch cloud of blue rather than the formal towers of traditional delphiniums.\u003c\/p\u003e\u003cp\u003eThis heat-tolerant Chinese delphinium blooms its first year when started early and returns in Zones 3–7. The nectar-rich flowers draw hummingbirds and butterflies, while the compact stems slip naturally into informal bouquets.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBotanical name:\u003c\/strong\u003e \u003cem\u003eDelphinium grandiflora\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLife cycle:\u003c\/strong\u003e Perennial; blooms the first year\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardiness:\u003c\/strong\u003e USDA Zones 3–7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExposure:\u003c\/strong\u003e Full sun\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSowing:\u003c\/strong\u003e Start indoors 8–10 weeks before the last frost\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlanting depth:\u003c\/strong\u003e 1\/4 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGermination:\u003c\/strong\u003e 21–28 days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMature height:\u003c\/strong\u003e 18–24 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal spacing:\u003c\/strong\u003e 10–12 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate seed count:\u003c\/strong\u003e 29–30\u003c\/li\u003e\n\u003c\/ul\u003e\u003c!-- seed-starting-help:2026-08-23 --\u003e\u003caside aria-label=\"Seed-starting help\" style=\"margin:1.25rem 0;padding:.9rem 1.05rem;border-left:4px solid #8467a5;background:#f8f5ef;\"\u003e\u003cp\u003e\u003cstrong\u003eSeed-starting help:\u003c\/strong\u003e Tiny seeds, large opinions. This variety begins with a little backstage work. Review \u003ca href=\"\/blogs\/news\/how-to-start-flower-seeds-indoors\"\u003ehow to start flower seeds indoors\u003c\/a\u003e and \u003ca href=\"\/blogs\/news\/when-to-start-flower-seeds\"\u003ewhen to begin in your climate\u003c\/a\u003e.\u003c\/p\u003e\u003c\/aside\u003e\u003cp\u003eCut each finished flush to the base to invite rebloom, and keep the blue sprays coming with regular water. Discover more distinctive varieties in our \u003ca href=\"\/collections\/flower-seed-packets\"\u003eflower seed packets\u003c\/a\u003e.\u003c\/p\u003e","brand":"Renee's Garden","offers":[{"title":"Default Title","offer_id":44028146810939,"sku":"SWF5346","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3455\/6475\/files\/renee-s-garden-delphinium-chinese-blue-mirror.jpg?v=1787448563","url":"https:\/\/www.anniesannuals.com\/products\/renee-s-garden-delphinium-chinese-blue-mirror","provider":"Annie's Annuals \u0026 Perennials","version":"1.0","type":"link"}