Outdoor peach have no idea how to treat this. Happens every year and im pretty sure its why it doesnt bear many fruit, also fruit doesnt make it past the size of a walnut before falling off.
Full Sun at least 8 hours, watered weekly. In central cali sandy soil. Have Orange and lime tree grow fine and produces fruit but some leaves on them also get this diesease but no where near as bad as this
by Creative_Yak_7940
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Peach leaf curl
Okay, this is Peach Leaf Curl which is caused by a fungus.
You’ll need to remove all of the infected leaves by hand, as well as collect any leaves that fall on the ground, as they appear. Do *not* keep them around the tree or use it as mulch for the tree as it will reinfect the tree.
You’ll also want to feed with a high nitrogen fertilizer every 2 weeks to get the tree to get new leaves tapering off a month or two before the end of the season.
Copper is a good treatment but it can cause some leaf fall when the leaves are that big. Nothing too severe but some will fall.
You’ll want to get some garden sulphur. (Not lime sulphur, but the powder elemental sulphur) You’ll want to spray it every 2 weeks, or after it rains (assuming it isn’t going to rain within the next few hours), whatever is sooner. You should rotate it with the copper every 3rd spray to help prevent resistance. You’ll be doing this the ENTIRE season, but it is a very inexpensive thing as you need so little for a spray…assuming it’s not a whole orchard of trees.
You also want to spray the *entire* tree, not just the leaves, to runoff. So branches, trunk, I usually also do the ground under it.
Also, you should never spray anything when the tree is in bloom with flowers. It causes the flowers to abort. Once the fruit is growing though you’re fine.
Now, this is very important, when the tree is going dormant for winter, once it loses all (or the majority) of it’s leaves you’ll want to get Dormancy Spray, which is a mixture of Lime Sulphur and Mineral Oil. You want to soak the tree with it. Do NOT spray it if it’s a risk of going under 0°C while it’s wet.
Now, come spring, you’ll want to treat it again with the Dormancy oil when the leaf buds are just starting to crack, but while there are no flowers in open bloom. If you want to, you could spray with copper on the first few warm days in spring a few weeks before the buds develop. I usually do.
This should help mitigate a severe infection of Peach Leaf Curl, once it’s under control you’ll probably still have a few leaves get infected every year but as long as you’re on top of things it’s easily manageable.
**Peach Leaf Curl**