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Yes, you can grow blueberries. This article will help:
https://www.gardeningknowhow.com/edible/fruits/blueberries/growing-blueberry.htm

I think you may like zebra grass as a decorative grass.

Since it is newly planted (and hot), it is likely suffering from transplant shock. This article will help: https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm

Technically, you can start picking blueberries as soon as the plant can make them, but the more common practice with some growers is to pinch out the flowers during the first year or two. This is supposed to encourage a stronger root system before the bush begins putting out fruit. Stronger roots produce better berries, or so that is the thought behind this action. However, if yours is putting out berries for the first time, there is no reason why you cannot enjoy them.

Spring or fall are the best times to transplant blueberry bushes. However, if you can ensure that it will get plenty of water while it re-establishes in another location, it is still possible to transplant successfully. Also, if you can ensure that the majority of the roots and surrounding soil is lifted and replanted in suitable growing conditions, you'll have a greater chance of success. To reduce shock, trimming may help. Here is an article that you may find helpful: https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm

Pine needle mulch is a good one and will help raise the soil acidity over time.

The bushes could be affected by a pest of some kind or even a fungus, which can be treated with neem oil. Here is more information: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

There may also be air pockets in the soil which are causing the roots to dry out. Step firmly around the base of the plants to collapse any air pockets. I would also flood the area with water, meaning leave the hose running at a medium speed for about 20-30 minutes. This will help to further collapse any pockets in the soil.