Royal Sweet Pea Vines... Are an old-fashioned favorite! Royal Sweet Pea (Lathyrus Odoratus Royal Lavender) These Sweet Peas are prized for being so easily grown from flower seeds. Their charming, scented blooms are wonderful to behold. This lavender variety has an average of 3 - 5 blooms in a cluster and each bloom is approximately 1 inch in size. The color of the blooms may range from light lavender to dark, nearly purple, but all the blooms are gorgeous! This variety also makes a wonderful cut flower because the stems are so long and full of blooms. In addition to being beautiful, these Royal Sweet Peas are also attractive to pollinators! Butterflies and bees both love them. These plants are easy to grow and maintain as well. It is best to deadhead flowers fairly frequently, as this will prevent any seedpods from developing, thus prolonging the period of flowering. Sweet Peas Seeds | Royal Lavender How to Grow Grow Sweet Pea plants in full sun, but in areas with very hot summer weather, provide some afternoon shade for the best performance. Position them away from winds and rotate locations from year to year to prevent pests. In cold climates, plant the seed in early spring, as soon as the soil can be worked. In warm climates, plant in October through January for spring bloom. For best germination, soak the Sweet Pea seeds overnight in warm water. Plant Spacing: 2 - 3 inches for seed spacing, then thin plants later to 5 - 6 inches. Flower Specifications Sowing Rate: 1 - 2 seeds per plant Depth: 1/2 inch Moisture: Keep seeds moist until germination Average Germ Time: 14 - 21 days Bloom Season: Early summer to late summer Height: 72 - 84 inches USDA Zones: 3 - 9 Season: Annual