Hey Stringfellow,
If the fruit bush is a potted plant, it can be planted at any time, but if bareroot, best done in autumn and water them good. In saying that, am guessing that it is highly unlikely bareroot as nurseries usually have them available only for autumn planting. Except for strawbs that I know a company in Germany has it all year round. And I bought some previously and I just had to water them like crazy to get them established.
We had 2 bareroot chestnut plants bought 3 years ago and they were planted in Nov and we just watered them thoroughly.
ps: my apologies, didn’t mean to hijack the question as it was directed at Charles.