Sugi,
The red leaves most likely mean it was grown where the temperature was somewhat cold.As long as it stays cool,they will stay that way and probably will continue to drop.Those are last years leaves and when things warm,new green growth should start.
Is it Northern or Southern Highbush?What variety name?
It's probably best to have another Blueberry plant for better production. Brady

Bradybb -

Thank you! I was totally unsure if this was last year's growth or if the leaves on this particular one were meant to be reddish. :-)

This one is Southmoon, and it's planted alongside Misty. I'm still on the lookout for "O'Neal"? Based on what I read, I really want that one but in all honesty, I'd be crazy to bring in one more on this patio given how cramped I am right now, haha.

We have really been fluctuating in temperature here in the SF Bay Area -- from highs of mid 70s to highs of 50 all in the same week. Yesterday was a high of 52 and I really was concerned about some of the plants -- and today, it's like summer out there!

Thank you again for your response!

Sugi,
Okay good,I have Misty also and it kept most of it's leaves.Some Southern Highbush do that.It should be a fine pollinator for the Southmoon.
I want an O'neal too.There is a nursery nearby and I'll probably pick one up,even though my space is limited.I've read they're very sweet and early to ripen.
I hope your plants do well. Brady

My northern highbush varieties drop all of their leaves without exception, but many of my southern highbush (including a Southmoon that I added last spring) and rabbiteye varieties hold some leaves through the winter and don't drop them until new growth begins in the spring. So, as Brady says, your Southmoon is behaving perfectly normally. I'll add that my potted Southmoon bush proved to be a vigorous grower last year. It shared a 15 gallon Smart Pot with an O'Neal bush of comparable age, and it outgrew the O'Neal two to one.

Thanks, Brady. Hopefully you and I will be munching on three varieties of blueberries and potentially live forever. Haha.

Shazaam -- that's a relief to hear! When I got it, a few buds were setting and it was interimittently peppers with reddish leaves, so I thought perhaps that's the color of this bush. So when they started dropping, I had to consult the blueberry experts here.
The Southmoon and Misty are also sharing the same wine barrel planter at this time. I'm not entirely certain that this was my most brilliant idea, but I'm really limited on space on that particular balcony, and the other doesn't receive enough sunshine for me to move them all there. I figure this setup is okay for the next year or two, and am relieved to know you have done this already. If I get the O'Neal, which I shouldn't but probably will, that one will have its own pot, mostly because I don't feel like messing w/ this pot, haha.

I think if I had all three on hand on the day I planted, I would have probably tried to squeeze them all into one pot!

I am really, really loving how the Southmoon spurts out new growth along seemingly old branches. It's really a dramatic change, day by day, whereas less so w/ the Misty that has retained all its leaves and was lush and pretty to begin with.

Fingers crossed!