Hey y'all, I have a potted jostaberry in zone 7a, NE USA. This is our second year together. We have had some extremely warm weather off and on this past month, and today I noticed the plant is blooming! It did not bloom last year. Of course, temps are dropping now and will be around 30F at night for the next several days (daytime temps around 55-60F). What should I do, if anything, to make sure it sets fruit?
by mrsrobotic
2 Comments
You don’t need to do anything. They’re cold hardy down to like -25 at the bare minimum, and mine have set fruit even when we have cold snaps to -10 or lower with freezing rain and/or snow.
The blossoms will possibly be damaged by a freeze. Throw a frost cover over it, or bring it inside. We live at about 1500’ elevation, and lost a jostaberry crop one year due to a freeze when the bushes were blossoming.