Hi Anne,
So it’s not your grafting skills then, most likely the climate does not suit your goal. Two thoughts.
- If you have room for another tree I highly recommend the Fowler Nursery Puente that comes barefoot and should fit your climate better than other rootstocks.
- It’s possible you have another member in your region that has already solved your challenge. You might check out the member map to see if this may be the case: General Location Map of growingfruit.org members
Take care and good luck. Hope this helps
BTW if you are interested in trading plum scions let me know what you have!
Dennis