{"product_id":"delphinium-grandiflorum-summer-star-siberian-larkspur","title":"Delphinium grandiflorum Summer Star | Siberian larkspur","description":"\u003ch2\u003e\u003cstrong data-start=\"267\" data-end=\"328\"\u003eDelphinium grandiflorum ‘Summer Star’ | Siberian Larkspur\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"350\" data-end=\"722\"\u003eA compact and charming perennial delphinium that flowers \u003cstrong data-start=\"407\" data-end=\"458\"\u003ealready in the first year without vernalization\u003c\/strong\u003e. ‘Summer Star’ produces an abundance of vivid blue blooms held above neat mounds of finely divided foliage. Ideal for \u003cstrong data-start=\"577\" data-end=\"627\"\u003eborders, mixed containers, and cutting gardens\u003c\/strong\u003e, this Siberian larkspur combines strong garden performance with elegant, long-lasting color.\u003c\/p\u003e\n\u003cp data-start=\"724\" data-end=\"939\"\u003eThe plants stay compact and bushy, making them perfect for \u003cstrong data-start=\"783\" data-end=\"818\"\u003esmaller gardens or pot displays\u003c\/strong\u003e, while still giving the lush, classic delphinium look. Continuous blooming throughout summer with regular deadheading.\u003c\/p\u003e\n\u003ch3 data-start=\"946\" data-end=\"976\"\u003e\u003cstrong data-start=\"953\" data-end=\"974\"\u003ePlant Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"977\" data-end=\"1433\"\u003e\u003cstrong data-start=\"977\" data-end=\"996\"\u003eBotanical name:\u003c\/strong\u003e \u003cem data-start=\"997\" data-end=\"1022\"\u003eDelphinium grandiflorum\u003c\/em\u003e\u003cbr data-start=\"1022\" data-end=\"1025\"\u003e\u003cstrong data-start=\"1025\" data-end=\"1037\"\u003eVariety:\u003c\/strong\u003e \u003cem data-start=\"1038\" data-end=\"1051\"\u003eSummer Star\u003c\/em\u003e\u003cbr data-start=\"1051\" data-end=\"1054\"\u003e\u003cstrong data-start=\"1054\" data-end=\"1070\"\u003eCommon name:\u003c\/strong\u003e Siberian Larkspur\u003cbr data-start=\"1088\" data-end=\"1091\"\u003e\u003cstrong data-start=\"1091\" data-end=\"1106\"\u003ePlant type:\u003c\/strong\u003e Perennial (first-year flowering)\u003cbr data-start=\"1139\" data-end=\"1142\"\u003e\u003cstrong data-start=\"1142\" data-end=\"1153\"\u003eHeight:\u003c\/strong\u003e 35 cm \/ 14″\u003cbr data-start=\"1165\" data-end=\"1168\"\u003e\u003cstrong data-start=\"1168\" data-end=\"1179\"\u003eSpread:\u003c\/strong\u003e 25–30 cm\u003cbr data-start=\"1188\" data-end=\"1191\"\u003e\u003cstrong data-start=\"1191\" data-end=\"1201\"\u003eHabit:\u003c\/strong\u003e Compact, well-branched\u003cbr data-start=\"1224\" data-end=\"1227\"\u003e\u003cstrong data-start=\"1227\" data-end=\"1240\"\u003eExposure:\u003c\/strong\u003e Full sun – partial shade\u003cbr data-start=\"1265\" data-end=\"1268\"\u003e\u003cstrong data-start=\"1268\" data-end=\"1287\"\u003eHardiness zone:\u003c\/strong\u003e 3b–7b\u003cbr data-start=\"1298\" data-end=\"1301\"\u003e\u003cstrong data-start=\"1301\" data-end=\"1315\"\u003eHeat zone:\u003c\/strong\u003e 6–1\u003cbr data-start=\"1319\" data-end=\"1322\"\u003e\u003cstrong data-start=\"1322\" data-end=\"1336\"\u003eSeed form:\u003c\/strong\u003e Raw seed\u003cbr data-start=\"1345\" data-end=\"1348\"\u003e\u003cstrong data-start=\"1348\" data-end=\"1362\"\u003eBest uses:\u003c\/strong\u003e Bedding, borders, cut flowers, mixed containers, landscape plantings\u003c\/p\u003e\n\u003ch3 data-start=\"1440\" data-end=\"1472\"\u003e\u003cstrong data-start=\"1447\" data-end=\"1470\"\u003eGrowing Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1473\" data-end=\"2191\"\u003e\u003cstrong data-start=\"1473\" data-end=\"1491\"\u003eSowing period:\u003c\/strong\u003e December–May\u003cbr data-start=\"1504\" data-end=\"1507\"\u003e\u003cstrong data-start=\"1507\" data-end=\"1525\"\u003eSowing method:\u003c\/strong\u003e 2–3 seeds per plug or cell\u003cbr data-start=\"1552\" data-end=\"1555\"\u003e\u003cstrong data-start=\"1555\" data-end=\"1571\"\u003eGermination:\u003c\/strong\u003e 14–18 days at +20–22 °C; keep substrate evenly moist and cover seed lightly.\u003cbr data-start=\"1648\" data-end=\"1651\"\u003e\u003cstrong data-start=\"1651\" data-end=\"1666\"\u003eGrowing on:\u003c\/strong\u003e\u003cbr data-start=\"1666\" data-end=\"1669\"\u003eTransplant 6–8 weeks after sowing into 9 cm pots or 1 L containers. For larger pots, plant 3 seedlings per container. Avoid deep planting and ensure good air circulation.\u003cbr data-start=\"1839\" data-end=\"1842\"\u003e\u003cstrong data-start=\"1842\" data-end=\"1860\"\u003eFertilization:\u003c\/strong\u003e Moderate — begin feeding at 200 ppm N (2-1-2 ratio). Avoid high salt buildup.\u003cbr data-start=\"1938\" data-end=\"1941\"\u003e\u003cstrong data-start=\"1941\" data-end=\"1967\"\u003eFinishing temperature:\u003c\/strong\u003e +7 °C – +24 °C (avoid \u0026gt; +29 °C; may cause flower abortion).\u003cbr data-start=\"2027\" data-end=\"2030\"\u003e\u003cstrong data-start=\"2030\" data-end=\"2040\"\u003eLight:\u003c\/strong\u003e Requires good light; avoid short-day conditions below +13 °C to prevent rosetting.\u003cbr data-start=\"2123\" data-end=\"2126\"\u003e\u003cstrong data-start=\"2126\" data-end=\"2143\"\u003eSoil \/ Media:\u003c\/strong\u003e Well-drained, fertile soil with pH 5.8 – 6.5.\u003c\/p\u003e\n\u003ch3 data-start=\"2198\" data-end=\"2222\"\u003e\u003cstrong data-start=\"2205\" data-end=\"2220\"\u003eGarden Care\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2223\" data-end=\"2523\"\u003ePrefers fertile, well-drained soil in full sun. Protect from strong winds.\u003cbr data-start=\"2297\" data-end=\"2300\"\u003eFeed every two weeks during the growing season.\u003cbr data-start=\"2347\" data-end=\"2350\"\u003eDeadhead spent flower spikes to encourage side shoots and repeat bloom.\u003cbr data-start=\"2421\" data-end=\"2424\"\u003eCut back to ground level in late autumn.\u003cbr data-start=\"2464\" data-end=\"2467\"\u003eCan be propagated from basal cuttings in early spring.\u003c\/p\u003e\n\u003ch3 data-start=\"2530\" data-end=\"2553\"\u003e\u003cstrong data-start=\"2537\" data-end=\"2551\"\u003eCrop time:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2554\" data-end=\"2595\"\u003eSpring sowing: 16–20 weeks to flowering\u003c\/p\u003e","brand":"therapyofflowers.com","offers":[{"title":"20 seeds \/ 35 cm \/ White","offer_id":52119184572759,"sku":null,"price":2.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/9275\/3751\/files\/delphinium-grandiflorum-summer-star-siberian-larkspur-20-seeds-35-382.jpg?v=1769987947","url":"https:\/\/www.therapyofflowers.com\/ru\/products\/delphinium-grandiflorum-summer-star-siberian-larkspur","provider":"therapyofflowers.com","version":"1.0","type":"link"}