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Royal Carpet Sweet Alyssum (Lobularia maritima) is a dwarf variety that is useful for planting along edging borders, filling in flower beds, and in pollinator gardens. This plant has delicate purple flowers that are fragrantly sweet. Annual flower that is low to the ground at 4-6" tall. AAS winner.
Start alyssum seeds indoors for early blooms.
Start indoors 6-8 weeks before last frost date. Press seeds into soil; light is needed for germination. Keep soil evenly moist but not wet. May be grown indoors if given sufficient light.
Royal Carpet Sweet Alyssum Seeds Growing Details | |
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Botanical Name | Lobularia maritima |
Plant Spacing | 6-8” |
Planting Depth | 1/16” |
Spread | 10-12” |
Height | 3-8” |
Germination Temp | 65-75 °F |
Light Required | Partial Shade |
Life Cycle | Annual |
Days to Germination | 5-14 Days |
Days to Maturity | 50-60 Days |
Planting Zone | 5-9 |
Flower Form | White Terminal Raceme |
Yield | High |
Growth Rate | Fast |
Growing Season | Spring - Fall |
Blooming Season | Summer - Fall |
Sweet alyssum can grow in full sun to partial shade. It goes dormant when temperatures get too hot, so partial shade is usually best in warm summers.
Yes, alyssum is a great pick for growing in a container.
Select a container with good drainage holes and high quality soil. Alyssum will grow well and look its best in hanging pots or locations that allow cascading over an edge.
Sweet alyssum is an annual and will die in freezing weather. However, it can self-seed to return, letting it self-sow from seeds that develop.
Seed pods will begin to grow below the flower when mature. Clip the spent stems beneath the seed heads. Shake the stems or crush the seed heads to remove the seeds and separate them from the chaff. Once the seeds are fully dry, store them in a dry, cool location to plant another season.