Alyssum is a delicate carpet of tiny flowers with a subtle, sweet scent. The low-growing foliage is covered by flowers for much of the growing season. They enjoy some afternoon shade, but definitely not full shade, so spare a thought when positioning them.
If your soil is in pretty good condition before planting then you need do little in the way of feeding, since alyssum are not particularly fussy and would really prefer not to be smothered with care. With poor soil or containers though, it is advisable to feed them once a month with a water soluble fertiliser. Only moderate watering is required since alyssum can tolerate dry soil conditions. Ensure the soil is well-draining and that your seedlings are planted 15cm apart giving their roots room to spread. They are spreaders, after all. They make wonderful ground covers, acting quite like a living mulch, for tall growing plants and since their roots are not invasive, they can be exceptionally beneficial if employed correctly.