One of the new grafts on a multi graft I did this year has a gum residue at the graft site and the growing tips seem to be wilting. Is this a problem and, if it is, how should I treat it? The parent tree is an old nectarine, which was suffering from leaf curl. I have left 2 parent shoots to develop. The stump was sprayed with copper oxychloride prior to grafting (most of the old wood was removed in prep for the grafting) and any leaves of the parent which were showing signs of wilt have been removed as they appeared, and it now looks very healthy. Of the 12 grafts of 5 different varieties, I have managed 100% take!
Gummosis is the oozing sap from wounds or cankers on fruit trees.
Gummosis can result from environmental stresses, mechanical injury, disease or insects.
Cytospora canker or Valsa canker is the fungal cause of gummosis.
One of the symptoms is that new shoots or leaves will yellow and wilt.
The disease kills the wood underneath the canker.
These fungus diseases overwinter on dead wood and in the spring release spores, they transfer to the tree with water splash or wind.
They will enter the tree in open wounds (likely the graft site).
Here is a link with more information.
It is mid-January here in Elgin, SE AZ, elevation 5,000. feet. We have been having freezing weather since early December. Our nectarine tree is 5 or 6 years old. Yesterday, while pruning, we noticed copious amounts of a clear jelly-like substance oozing from many places on the trunk and from a few branch crotches. Help!
This is a canker that is generally caused by environmental conditions or insects.
Here are articles that will help you pinpoint the cause.
https://www.gardeningknowhow.com/edible/fruits/nectarines/nectarine-fruit-oozing.htm
https://www.gardeningknowhow.com/edible/fruits/nectarines/growing-nectarine-fruit-trees.htm
I planted a young nectarine tree about a month ago. Now, the leaves are wilting and beginning to drop and I noticed that many of the little branches are drying up and turning a reddish brown. It had just started growing some fruit but now those are dry and hard. I've been trying to research the problem but so far I haven't found anything that matches the symptoms I'm seeing in this tree. Please Help!
Make sure you have planted your new tree properly.
Water is key for new trees; daily for the first 2 weeks.
These links will help you access the planting and care.
https://www.gardeningknowhow.com/edible/fruits/nectarines/growing-nectarine-fruit-trees.htm
https://www.gardeningknowhow.com/ornamental/trees/tgen/watering-newly-planted-tree.htm
My nectarine tree has stopped producing fruit. Three years ago it produced hundred of nectarines. This year there is one nectarine on my tree. Last year wasn't much better. It looks healthy. Leaves are healthy. We spray for leaf curl every December-January. What happened?
I would first encourage a soil test. This will help you determine what nutrient issues the tree may be having.
Your local County Extension Office can help with a soil test.
These links will help you pinpoint the cause.
https://extension.psu.edu/plants/gardening/fact-sheets/home-orchard-production/why-is-there-no-fruit-on-my-tree
https://www.gardeningknowhow.com/extension-search
Can a nectarine seed be germinated and grown?
Yes, this link will help you.
https://www.gardeningknowhow.com/edible/fruits/peach/planting-peach-seeds.htm
I have a lot of nectarines on my tree but they are still green and not getting any bigger. I planted the tree two years ago so I am assuming it is about a 4 year old tree. Is it too late to pull some of the fruit so the others will get bigger and ripen?
It depends on the size of the fruit.
These articles will help you.
https://www.gardeningknowhow.com/edible/fruits/nectarines/how-to-thin-nectarines.htm
https://www.gardeningknowhow.com/edible/fruits/nectarines/picking-nectarines.htm
I was wxited this spring when my nectarine tree was full of fruit. I sprayed with organtic fungicide about a month ago . Now all the fruit is shrivelling down to brown lumps. Shucks,what went wrong?
Check the label of the product you used; make sure it was suitable for fruit trees.
Check your tree for signs of pests or disease.
This does sound like Brown Rot Fungus.
These links will help with more information.
https://www.gardeningknowhow.com/edible/fruits/peach/brown-rot-fungus.htm
https://www.gardeningknowhow.com/edible/fruits/nectarines/spraying-nectarine-trees.htm