Lobularia maritima. Attracts and supports beneficial insects, such as lacewings, parasitic wasps, syrphid flies, and tachinid flies. Easy to grow, forms a low-growing (8-16" tall) mat of sprawling plants with dense clusters of small white flowers. Requires little maintenance or weeding. It seriously never stopped flowering until our first hard frost. After setting seed in late summer, we chopped it way back and it just grew right back and bloomed all fall. Sweet alyssum's aroma is intoxicating, wafting 50 feet of the patch to remind me of it's presence. Tender perennial in Zones 9-11.