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An annual plant (30-50 days) with a height of 10-50" (30-120 cm). Flowers are irregularly-shaped with various colors, with a diameter of 0.5'-1' (2-3 cm) that collected in the spicate inflorescence. Grow by sowing seeds in open ground before winter. Grows best in wind-protected areas. Used in mixed flower gardens, group plantings, and for cutting. Sow seeds indoors 8-10 weeks before last spring frost. Sow 1/8 inch deep. Keep the soil moist at 70-75 degrees F. Seedlings emerge in 21-28 days. As soon as the seedlings emerge, provide plenty of light on a sunny windowsill. Delphinium seedlings do not need much fertilizer, feed when they are 3-4 weeks old. You can transplant the seedlings to 3 or 4 inch pots when seedlings have at least 2 pairs of true leaves before transplanting to the garden so they have enough room to develop strong roots. Before planting in the garden, seedling plants need to be “hardened off”. Accustom young plants to outdoor conditions by moving them to a sheltered place outside for a week. Be sure to protect them from wind and hot sun at first. This hardening off process toughens the plant’s cell structure and reduces transplant shock and scalding. Careful watering is essential in getting delphinium perennials off to a good start. Water thoroughly at least once a week to help new roots grow down deeply. Until the delphinium plants become established, some protection from extreme winds and direct, hot sunlight may be necessary.
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