[Ado]

There is a plant sale at my allotment tomorrow and among the fruit trees for sale are josterberry bushes, which are a cross between gooseberry and black currant
bushes.
I'm curious as I haven't ever heard of them - has anyone ever tried growing them, or even eating them?

Ado

[Greengage]

The Jostaberry is a cross between the blackcurrant and the gooseberry which originated in Germany. It is a very vigorous plant that is thorn less, it produces a crop of dull brownish red berries in small clusters; that are about the size of large blackcurrants. The taste is something between the currant and the gooseberry and it makes a nice jam.
The Jostaberry is resistant to gooseberry mildew, leaf spot and gall mite, but the flowers are frost prone. It crops on both the old wood and the young. It can be grown and pruned as
a stooled bush like a black currant or as a half standard like a gooseberry.
Because it is very vigour's, unless you have plenty of room and like curiosities, it is not worth growing. Cold and frost in the spring can result in poor cropping.