petunias in hanging containers
I have a bunch of petunia seedlings that need to be transplanted into hanging containers very soon. Having never really worked with annual seedlings I could use a little advice. Here are my questions.
1) I have a bunch of 14" diameter hanging pots (cheapy $12.00 re-usable ones from my local garden center). How many holes should I drill for adequate drainage and how large should the holes be?
2) Should I line the bottom of the container with gravel or should I just use mesh fiberglass tape to cover the holes?
3) How many petunia transplants into a container of that size? I was thinking three, in a triangular shape layout.
4) I will be re-using potting soil from last year that I stored in a well ventilated clean trash can. I plan to add Osmocote Plus CRF to it so that I don't need to feed them again after I transplant them. Does that sound about right?
5) I also have Duet Sorbet violas and White Verbanas...will these go well with Petunias in a hanging container?