I am having trouble finding information on this. I do container and hydroponic vegetable gardening. I am now in south/central Texas and it gets hot! Back yard has large areas of rock beds and a large brick patio. Concerned about my vining plants (cantaloupe, spaghetti squash, other melons, etc). Is it okay for the plant if the vines are lying on a hot surface like that instead of normal ground? Maybe as long as they remain appropriately watered they will not dry up or burn? Thanks so much!

You came to the best conclusion. Keep them watered well. Place soaker hoses with timers- saves time and keeps plants hydrated. Keep them watered and in late afternoon , provide some shade when excessive hot afternoon temps can burn foliage.

Thanks so much! Very good info.