Dying blueberry! HELP!!!!

I recently bought this patriot bush from a nursery. I've had leaf drop. All of them. Soil pH is right on and I can't tell what I'm doing wrong. This is my first time growing berries.. my sapphire cascade bush is popping off! Both bought this year. I'm just trying to feed my family. Zone 5a
Please please help

My guess is that your Patriot blueberry was exposed to an extreme heat wave and might have been scorched by the sun so badly that it lost all it's leaves. Patriot was developed at the University of Maine and was deliberately bred to withstand extremely cold temperatures- all the way down to -29 F. Oftentimes, when a plant is bred to withstand extremely cold temperatures in the winter, it has trouble dealing with extremely hot temperatures during the summer. My gut feeling is that Patriot probably doesn't like heat waves and direct afternoon sun whenever it goes above 95 F.

Here in Oregon, we had a heat wave earlier this month- several days of 100 F.- and two of my Legacy blueberries that I planted last year in direct afternoon sun got scorched so badly that they lost most of their leaves. As our climate heats up, many blueberry varieties  will need to be protected from direct afternoon sun.

Has it been extremely hot where you live this summer?

It has been very very hot this summer in Iowa. And humid. Is there any coming back from this? My other blueberry is doing fine

In this situation, it's probably a good idea to do a "scratch test". Take your fingernail and scratch off the bark in several small places along the stems. If there is a green cambium layer underneath the bark, then your plant is still alive. If the scratch tests shows a brown or gray layer under the bark on every stem, then your blueberry is probably a goner.

If you have a green layer, I would prune the bush back, side dress it with some acidic fertilizer (I use acid mix) or water it with fish emulsion. Then I would move the bush to a spot where it gets afternoon shade. You might try mulching it with moist peat moss or bark dust. Keep the bush well-watered and check to make sure the pot it's in is draining properly. Please update us if you have any more questions. Good luck!

I will try that! I'm assuming that's also what's going on with my heritage raspberry. Thank you!!!