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i have three plants that have not come out of dormancy
i am convinced that two are probably dead: a panamint nectarine and a autumn purple grape.
At what point do you give up and dig them out?
Also, is it too late to replace them this year?
I'd give up by the end of the month, but both should of leafed out by now. Especially the grape. The only things that shouldn't have leafed out by now are bare root jujubes, mid to late season apples, and maybe mulberries. It's been consistency hot enough to push almost every bareroot tree out of dormancy, assuming you've been doing your part and watering them appropriately.
Your best bet is to buy replacements, grow them in pots (preferably in shaded areas) and then put them in the ground in October.
You can still buy fruit trees in cardboard pots at HD cheap, place them in bigger pots with mulch to protect them from the heat and the sun, and get them through the summer.
I'm giving some of my dead ends until mid-May before I figure their DOA. But, yeah, the longer they go the less likely they are to blossom. But sometimes they surprise you when you stopped looking. My Royal Autumn grape vine is still dormant too.
Right now it is 90 degrees and headed for 93. Anything that comes out the next few weeks is gonna be a pain in the arse to get it to survive the summer.
I have two plum trees that are still dormant. They are planted near an apricot that has come out of dormancy. I know that they are alive because gently scratching into the trunk and several of the branches reveals green live wood.
I might tip the ends of the branches again. I did when I planted them, but it might stimulate some growth. you might consider replacing the grape. Home Depot has nice mature grape vines that are nice and lush for cheap right now. Get it in soon and it should do fine for the summer.
Or, you could come get one of the grape cuttings that I rooted. They have leafed out. I have thompson seedless and flame. PM me if you are interested.