I find that a good multipurpose fert for all my veggies is Espoma's Garden Tone, but I have never grown those 2 types of melon and squash you listed, but other varieties I grow do fine with Gardentone. As for the SVB, I just plant late squash once the early squash starts to bloom to extend the season. Aphids aren't much of a problem here but look for ants that may be tending to them, use Terro liquid to kill the ants and hand rub off the remaining aphids if you intend to grow organically. Happy Gardening!

If you don't have green tomatoes on vines today, you are too late for Summer tomatoes.

Plant seed or start curttings in July for a Fall crop. If you do have greenies today, do not put any kind of fertilizer on plants, just water them.

I'll assume you have the same black clay I do. In that even you are also plauged with Fire Ants. Look at my post in recent discussion titled something like "Thousands of ants in raised bed stock tanks". The #1 thing to do with this nasty soil is compost and more compost until it no longer gets so hard when dry you can't push a shovle into it. To get you up and rolling right a way instead of spending a year making compost, check around Austin for an operation similar to ( Texas Pure Products) where you can buy in bulk. After that, you will find the soil quite fertile, requiring only lite applications of fertilizer if any. Texas A&M Extension Service offers soil testing, let them analize yours and tell how how much of what soil needs.

Okra grows exceptionally well on the black clay, you can sidedress with 10-20-10 or other balanced fertilizer and give it plenty water. Fire ants will crawl all over okra, damage pods and wait to sting you so read my post twice.

SVBs and Squash bugs are two of if not the most difficult to control garden pests. Plant some late squash and hope bugs don't find it.

After you get a couple loads of compost and mulch, get started with home composting, otherwise "certain parties" might accuse me of making a lazy bum of you. For pointers and encouragement go to Soil , Compost and Mulch forum, ask for The Queen and tell her Klem sent you and said y'all could help me. (:

I am not in Texas so am of no help with your growing conditions. But, I will say I use Osmocote for my transplanted vegetables -- I like that it's a once-and-done.

And oh yea...squash vine borers are BEASTS! I have squash bugs, too, but they don't seem to ever really do any damage to the plants that's I've noticed, not up here anyway. But those squash vine borers can, and WILL, destroy your crop. I've found that they don't bother butternut (not yet, anyway...). I don't know what tromboni squash is, but they definitely go after kabocha. I'm trying buttercup this year; I assume it's the same story but we'll see. I read a tip to plant hubbard squash as a trap crop, apparently it's irresistible to the little demons, so I tried that this year. We'll see....

No idea about Texas but I have found that Tromboncino is the only squash plant that snails and slugs don't eat. All my butternut and zucchini have been eaten down to the soil....again.

@klem1, I do have tomatoes in varying stages of ripening on all of my indeterminate plants. My beds are open bottom raised started by turning the top 6"-8"of native soil and amended using a 60%\40% mix of raised bed soil and organic compost. I add compost as needed in between growing seasons to replenish the mix. I believe I do need to fertilize because my plants will hopefully continue to produce new blooms and set throughout the summer and into fall unless the temperature gets too hot. We did plant trobocino squash but the vine borers infested them so we pulled all plants out and reseeded. Hopefully we will be successful this go round. Appreciate all of the replies.

"produce new blooms and set throughout the summer and into fall unless the temperature gets too hot". LOL! Have you EVER known temps in Texas failing to get too hot,,,,,,,,like just once in your entire life?