NOTE: I am going to cover the surface of the raised beds with black mulch, as the growing season here is very short (120 days) and the weather fluctuates greatly with the temps. I have never used black mulch before, so how will I water the plants with the surface of the soil being covered with black mulch?

I am very new to planting in raised beds, and this is in regards to planting melons in raised beds. I tried growing melons in raised beds last year, and it was my first year growing melons, and last year was my first year doing raised beds as well.

Unfortunately I overcrowded the beds and they basically took over the entire space of the beds.

I have both bush and vine types, and will be growing them in 4' x 8' raised beds. With trellising, how many bush type melons can I grow per 4'x 8' raised beds? With vining type melons, again using trellising, how many melons can I grow per raised bed?