Growing fruit at a higher hardiness zone

Question

I understand that growing fruit trees in a hardiness zone that's lower than recommended has a chance of your tree dying from frost damage.

However, what is the effect of growing fruit trees at higher hardiness zones than recommended? What happens to the tree and the fruit?

Today, I just bought a Hinnomaki Red Goosberry from the local nursery.

At the store, they claimed it was the correct zone range for our northern California town. However, when I went home to do more research, Starkbros says my zone is higher than the recommended range.

Answer 1

What might happen is no or very poor fruit production - many fruiting plants need a cold spell to trigger fruiting later on, so growing them in higher zones where it doesn't get cold enough often means they simply don't produce.

Answer 2

Did you get them at a garden-shop or a nursery that grew them ? If they were grown there they are fine . Are you in mountains where elevation is going to make a big temperature difference? For one plant,I would plant it and see what happens. Some information is not perfect: I just gave up on my Ein Shimer ( ?) apple that is supposed to grow in zone 8 ,but doesn't make fruit.