Comment concerning Gold Alyssum (Aurinia saxatilis): Now I know.

The plant looks great spilling over my neighbor's stone wall, but I haven't had as much luck with it. What I've learned is that it prefers average, dry soil, rather than the rich moist soil found in my garden. Where Basket-of-Gold is concerned, moist rich soil + summer humidity = untidy, short-lived plant. For this reason, I've read that many southern gardeners grow it sort of like an annual (planted in the fall so that it blooms in early spring and dies in the summer).