Advice, please.
Despite years of running a gardening program for children, I know very little - I did the grunt work and finances; others actually chose the crops and supervised the planting.

I have a tulip bed on one side of my house that is overgrown and at thi time of year overwhelmed with high grass and weeds. I want to dig them up, make a decent bed with mulch and disperse the tulips a bit better. When do I do it? How do I do it? And what else can go in there for color all spring and summer.
Thanks,
SINS