Alyssum Flower How To Plant. Plant directly into the pot by pressing the seeds lightly into the surface of the pot lightly cover and firm down. Harden off seedlings by growing at 50-55F 10-13C night temperatures.
You can also start seeds indoors for transplanting later. Planting holes should be slightly larger than the rhizome with the soil clod and when being. Fill small draining pots with very moist seed-starting compost and then sow three or four sweet alyssum seeds on the surface.
Alyssum grows best in full sun.
Broadcast seeds into cultivated soil or containers about 2 inches 5cm apart and barely cover them with soil. 21102020 There are no special instructions for planting alyssum in flower beds other than making sure there is proper drainage for the water and including decent potting soil. Broadcast alyssum seed in flats indoors or well-amended soil outside. Put a pinch of seeds in every pot approximately 6 apart.