Nectarine

Peach leaf curl on peach tree. J. Alosi
Article

Peach Leaf Curl

November 17, 2025
If you have peach or nectarine trees, winter is the time to spray them to prevent peach leaf curl. Peach leaf curl is a fungal disease that attacks peaches and nectarines. It appears in spring, causing new leaves to become reddish, puckered and severely distorted. This disease is caused by the fungus…
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Plant Pathology

Program OverviewThe Plant Pathology Program provides applied research and outreach to support agricultural production across Imperial, Riverside, and San Diego counties. This tri-county region encompasses a wide diversity of crops and growing conditions—from the desert-irrigated systems of Imperial Valley to…
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Nectarines on tree
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Nectarine

When to plant: January–March Harvest window: June–September, depending on variety Fertilization: Nitrogen in spring and fall, additional applications based on tree age, health, and soil quality Dormant Spray (December–February): depending on disease pressure, consider dormant sprays to control for aphids,…
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Up close of cluster of orange-yellow fruit with green leaves
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Stone Fruit Production

General InformationTo ensure successful production of fruits, nuts, grapes, and berries it is essential that proper varieties be selected. The varieties listed on this site are well suited to our particular conditions. It is quite possible that some varieties not listed may perform well in certain…
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