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Blue Enchantment Morning Glory

"Blue Enchantment" morning glory (Convolvulus tricolor "Blue Enchantment") casts its spell with mesmerizing true blue flowers. Named "tricolor" for its three flower colors -- blue outer petals, white throat and yellow center -- morning glory resembles a more invasive relative, but is a harmless annual in most areas and a short-lived perennial in U.S. Department of Agriculture plant hardiness zones 9 through 11. This bushy, dwarf plant grows 12 to 16 inches high and 9 to 12 inches wide, and, despite its name, its flowers remain open all day.
  1. Planting

    • Sowing "Blue Enchantment" morning glory seeds early in the season gives you plants that flower throughout summer. Sow seed indoors four to six weeks before your projected final frost date. Nick the seed coating with a sharp knife or rub it gently with sandpaper, and place pots in a propagator heated to 70 degrees Fahrenheit to help speed germination. Once the first shoot shows through the soil, move plants to a warm, brightly lit area of the house or a heated greenhouse. Water regularly so the soil stays moist but not sodden. Morning glory plants can be planted out in their spot in the garden once all danger of frost is past.

    Growing

    • "Blue Enchantment" morning glory is usually easy to grow in suitable conditions. Well-drained, full-sun sites are ideal, though in hot climates it benefits from some afternoon shade. "Blue Enchantment" grows in clay, sand, chalk and loam soil, and tolerates poor soil and drought. It doesn't require much fertilizer -- an application of general-purpose continuous-release fertilizer at a rate of 1 tablespoon per square foot, or according to the manufacturer's instructions, when planting out is sufficient. Water plants regularly, just enough to keep the ground slightly moist to the touch, and deadhead flowers to promote further flowering.

    Pests and Diseases

    • Although generally trouble-free, "Blue Enchantment" morning glory can occasionally suffer attack from pests and diseases. Spray plants suffering from aphids or red spider mites with a ready-mixed insecticidal soap spray in the late afternoon, once plants are no longer in direct sunlight. Wet all parts of the plant except the flowers, including the undersides of leaves. To help control leaf spot and rust, pick off affected leaves or spray with a fungicide containing 29.6 percent chlorothalonil, diluted at a rate of 1/4 ounce per gallon of water, or according to manufacturer's instructions.

    Landscaping

    • "Blue Enchantment" morning glory dies down at the end of the year in most climates, so it suits temporary displays such as borders full of annuals, containers, and mixed perennial and annual plantings. Yellow and pink flower colors complement its blue shades, and its bright, cheerful appearance enhances cottage and tropical garden designs. Rock gardens are another appropriate home for this drought-tolerant, sun-loving plant, where its small dimensions won't overwhelm its companions.