Cooling outdoor grow

I have recently moved and my indoor space is limited from what was 4x4 to a 2x4. However, I do have a small space for an outdoor grow. I currently have 3 autos that i started indoors and have moved outdoors that are thriving, I should harvest in 3 weeks. I was thinking about starting a few more autos indoors and moving them outdoors again to make space for a couple of photos indoor because my new space only allows for a 2x4 tent. I live in the south and my June temps can occasionally get above 90 degrees. If I start a new batch this week and then move them outdoors, towards the end of flower they would be exposed to high heat and concerned about heat issues.

I was wondering if there is a material or greenhouse type situation I could build to reduce the heat during the daytime hours so that my plants don't get too hot. I know some genetics work better than others, but I was hoping for some input on ideas for temp control outdoors without my plants overheating. I'm new to outdoor container grows. I know autos aren't necessarily ideal in this situation, but I'm looking for input on genetics and an outdoor setup to reduce temps and maintain a high quality of flower. Yield isn't my main priority. I grow for me and a couple of friends so i'm not bigly worried about yields. I was hoping to get another quality harvest before we get stupid heat down here.
Thanks ahead for any advice.

The best cooling tactics I have seen is

1 dig a hole and place the pots you are growing the plants in in the hole. The dirt in the ground will always be cooler than the ground we put them on. Blocks sunlight from heating the root zone as well.

2 mesh sunscreen. Helps a ton.

I wouldn't put them inside a greenhouse as it will be hotter in the greenhouse.

You can get shading cloth to cover them during the hottest part of the day but it will reduce the amount of light they recieve.

The plants should be fine in 90° as long as they stay hydrated. I've had outdoor plants in pots do just fine even during the rare 100° degree day.

My comment may vary depending on your sun exposure. If your planting in the ground, try for morning/ early afternoon exposure. If they get shade later in day, it definitely helps.
If you’re using pots, use the lightest color you can.
I’m in the Tampa area and I got a head start by planting on New Years Day. Ready to harvest the girls soon!

I'm in norcal with temps above 90 degrees often. I use a hoophouse and put 70% shade cloth on top of the clear tarping to keep temps down. Every other 4 foot section and my temps stay below 90 in the hoop no problem. The sides are elevated about 1,5 ft for ventilation and cross breeze. Only PVC pipe, rebar and some basic wood sides needed.

^^^THIS