Alyssum does not love me. I can kill it faster than I can squash a bug. Not that I actually squash bugs. I've tried watering, not watering, full sun, part sun, some shade and a lot of shade. Nadda. It goes from the pot to dead in 3 seconds. I'm not taking it personally. There are plenty of plants in the nursery. I don't need no stinkin' Alyssum. At least this hoverfly got in some good tastes before I killed its food supply.
I will say this: there are 4 thriving white Alyssum doing well under my porch in the same pot as my Camilia. So I have that going for me. Which is nice.