Blueberries dying?

[n2ames]

Hello - looking for a bit of help with my blueberry plants. I bought three at the end of July; Ozark Blue, Blueray and New Hanover. I placed them individually in 30L felt pots with ericaceous compost and have fed them appropriately with ericaceous feed. Over a month later, I've had new growth on all three bushes, but some of the older leaves are going red - also affecting a few of the new leaves. Could this be a result of root rot? Is it nutritional? Is it because they are too wet/dry? Or is this just due to the seasonal changes and the plant losing its leaves? (I'm unsure if these are evergreen blueberries). I do have a bit of blackspot on some of the leaves too - the supplier has recommended to me an appropriate anti-fungal which they supplied free of charge for me to try. Here's a link to a few photos: https://drive.google.com/open?id=1fD...owA1JhFTpUGyU9

[roitelet]

I thought that Blueberries were deciduous and that the leaves turn an attractive red in Autumn.

[Kirk]

Blueberries can be either deciduous or evergreen, mine are sort of 50/50. Some leaves are lost but most remain.

As long as the pot is big enough and you use only rain water they should be OK.
My first thought was that duriung the hot dry weather you had used tap water. They really dislike lime at any extent.

You will have to search out Ozarkblue to find out if it is calsssed as deciduous or evergreen, I cannot see anything that give specifics.

Keep them/it damp, just in case it is losing leaves from being a bit too dry.

[n2ames]

The pots they are kept in are 14" in diameter and 12" deep and hold around 30L of ericaceous compost. They're made of a felt material and are supposed to promote "air root pruning" according to the manufacturer GardenMate (bought on Amazon). Is this a suitable pot? Or would plastic be more appropriate in holding in moisture? The plants were delivered in 9cm plastic pots and then transferred to my bigger ones (is there such thing as too big of a size increment when transplanting to bigger pots?).

Here's a picture: https://drive.google.com/open?id=16l...FvyKHFGvHQkyjQ (left to right: blueray, ozarkblue, new hanover; new hanover has the slowest growth, but I did use two different brands of ericaceous compost)

I bought the plants towards the end of our very dry summer and have only watered them with rain water collected in the garden.

I just hope they semi-establish before the end of the year so they get through winter and produce some blueberries for next year! I'll monitor how they go and give updates on here.

[nickdub]

I also bought some plants this year, though mine are in somewhat smaller pots for now. I reckon yours look OK - at any rate they are not too dissimilar to mine.

[It never rains..it pours]

Look fine to me, maybe one has a touch of leaf spot so probably best to put it away from clean two

[BUFFS]

they look like mine, shutting down for the winter, I have mine in 50ltr tubs as it stays wetter longer and they hate dry conditions, as we are never too short of rain we are only required to give ericaceous feed to get good crops..