Eric,

Your grafts will be just fine as long a you wrap them with parafilm well. I did a bout 20 stone fruit grafts about 1 1/2 week ago and they all took. I got about 30 persimmon seedlings to graft today and finishing up tomorrow. The temp will be in the upper 80's and may hit 90's in the next 3-4 days then back down to the 70's after that.

Tony

It sounds like our forecasts are pretty much the same. Thanks very much for the advice, Tony.
-Eric

I have fried lots of grafts in the upper 80's and 90s. You definitely want to cover them with aluminum shiny side out to reduce the heat stress. I only graft in such hot weather if there is no choice. Also I think its worth painting them and not just using parafilm, the parafilm creates a little moist "greenhouse" under the film which is not always right next to the scion. No big deal if its not roasting but not good in really hot weather. Or, wrap them super duper tight with the parafilm so there is no gap anywhere. This is hard to do on small scions since they bend easily.

Scott

I'm north of you in VA. I'm itching to graft my native persimmons but everything seems to be late this year. I normally start bark grafting persimmons around May 10th or so and they are fully leafed out so the bark is slipping. Last weekend I was down and the farm checking them. Some still had green buds and most were just starting to have the leaves unfurl. They are not close to full size leaves yet. I'll probably give them an extra week this year.

As others have said, grafting with hot temps in the forecast is not an issue for me. I wrap in parafilm and use the same aluminum shields to shade them from direct sun that are described.

One more thing you might consider if you have not had sufficient rain and your water table is low is to provide supplemental water to your trees before you graft.