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Sweet pea: Lathyrus odoratus Mammoth Navy Blue
![]() Sweet peas are adored for their fresh, delicate blooms and the heady fragrance they provide to the spring garden. A heat-tolerant cultivar, 'Mammoth Navy Blue' produces five or more giant blue-purple flowers per stem?enough for plenty of bouquets and arrangements?over a long season. Profile
did you know?The sweet-pea patch is one of Martha's favorite places in the garden. Sweet peas were also dearly loved by gardeners in Edwardian England, who grew them for their color and fragrance. More than 260 varieties had been cultivated by the end of the nineteenth century. general maintenance:Help plants to climb their support, loosely securing with ties if necessary. Mulch to keep soil cool, maintain moisture, and suppress weeds. pests/diseases:Snails, slugs, aphids, and powdery and downy mildew may occur. controls:To control snails and slugs, handpick or set out beer traps. Hose off aphids with water, or apply insecticidal-soap spray. To control mildew, remove diseased leaves, avoid overhead watering, and selectively prune plants to increase air circulation. how to sow/plant:In frost-free areas, direct sow in late summer to fall for early-spring blooms; in areas with colder winters, sow in early spring. To encourage germination, soak seeds overnight, or nick seed coats with a sharp knife. Amend soil with compost or well-rotted manure before planting. Plant 2?3 inches apart and 2 inches deep, pressing the soil down lightly. Erect a webbing-covered trellis or other support at planting time to avoid disturbing roots later. Thin young plants to 9?12 inches apart. water and fertilize:Keep soil evenly moist. garden hint:Clip the flowers every few days to encourage sweet peas to continue blooming. features:
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