I'm reviving this topic by agreeing that this is a great idea! This is also very timely now that it is springtime again. My front garden is full sun but I have bushes that protects my prized plumeria seedlings when I'm getting them acclimated to their regular environment on spring time and they also protect them from the hot summer months.
It is like having a baby seedling sitters and you don't have to pay them!
