Having been warned that Vaccinium corymbosum isn’t reliably self-fertile, and having nonetheless not bothered to install a second plant, I have been monitoring the progress of our little blueberry bush with some anxiety.
It put on a healthy show of flowers in May, and was well attended to by bees, although I did wonder if some of the larger ones were managing to get inside those dinky little bell-shaped blooms.
Today, I conducted a brief and unmethodical survey of the rate of fruit set, and it looks like somewhere between 20% and 40%. Interestingly, this varies quite a bit between individual racemes, with as few as 2 out of 9 ovaries and as many as 5 out of 6 ripening in some cases.
However, it seems (from my layman’s understanding of studies like this one) that self-pollination in V. corymbosum is also correlated with fewer seeds and (as a consequence, I assume) smaller fruit, so even if we get a few berries worth the name this year, it looks like we will, after all, have to approach the thing properly in the spring and put in some other varieties.