My pink lemonade blueberry bushes haven't blossomed and the leaves are yellow-green, the leaves at the top have brown spots on them. Is this caused by mites or disease, or is it the soil pH?
Yellowing leaves can be watering issues, or something more serious; pests and disease.
These links will help you.
I just bought this pink lemonade blueberry plant yesterday, and today the leaves are all still green, but they are drooping (see picture). Did I overwater? It is currently in a pot with full-sun outside.
There is a lot going on here. This looks like it was a transplant. I see, what appears to be, clay soil in the container.
If this was taken from the ground, then I suspect root damage. On top of this, the blueberry needs very light, specifically blended soil in container.
What I can do, for now, is point you to some of our articles that will help you to remedy the situation. These will help:
I have 5 pink lemonade blueberry bushes about 4 yrs old, growing very well, about 3ft x 3ft in size. I planted a different blueberry between these pinks and it produces like crazy, so I am guessing the acidity of the soil is not the problem. I also have various blueberries planted on the other side of my property (about 60 ft away from the pinks) and each one of them produces very well every year. What can be the problem? Why are the pinks not flowering or producing fruit? Should I prune them? If so, how much? Need your help.
Some blueberries will be more tolerant of neutral soils than others. If you do not feed them, at least once per year, with an acid loving plant fertilizer, or specifically designed blueberry fertilizer, then your soil pH will probably be the issue.
Fertilizing with something not formulated for blueberries, like ammonium nitrate, can stop flowering or even kill the plant. You will have to use something, like ammonium sulfate, to fertilize. It is much easier to find a blend designed for blueberries for best results.
Pruning is important too. The link below explains how.
This article will give you more information: https://www.gardeningknowhow.com/edible/fruits/blueberries/pink-blueberry-plants.htm