Chellam, I am not sure if you can do this with alyssum like you can tomatoes. For me, Alyssum germinates easily and is very vigorous and I would be inclined to start over. Not sure where you are or why you are starting them at this time of year or how 'leggy' they are to comment further.

SCG

I wouldn't worry about them being leggy. I have alyssum come up between pots in the nursery that start out super leggy but then fill out. I wouldn't plant it deep.

nil13,

Thanks a lot. Your personal experience suggestion is of great help to me.