How do you treat leaf spots on a pear tree?
Christopher Pierce
Published May 25, 2026
How do you treat leaf spots on a pear tree?
Treating pear fruit spot requires a combination of chemical and cultural practices. Apply fungicides as soon as leaves are fully developed, then repeat three more times at two-week intervals. Spray the tree thoroughly until the fungicide drips from the leaves.
Why has my pear tree got black spots on the leaves?
These leaf marks are caused by Pear Leaf Blister Mites. The picture above shows the early stages of the mite infection. The marks will eventually turn to dark red / brown / black (see picture below). In advanced cases of this disease the fruit can also become deformed although this is unusual.
How do you treat pear rust fungus?
The fungicides tebuconazole (Provanto Fungus Fighter Concentrate), tebuconazole with trifloxystrobin (Provanto Fungus Fighter Plus, Toprose Fungus Control & Protect), and triticonazole (Fungus Clear Ultra) are approved for the control of rust diseases on ornamental plants, and could be used on ornamental pear species …
How do you treat pear rust naturally?
Q How can I help affected plants with pear rust? A There are no chemicals available to control it. As well as getting rid of infected stems and leaves as, keep the tree fed (but not overfed), mulched and watered to help encourage plenty of new growth.
What are the treatments for black spots on pear tree leaves?
What Are the Treatments for Black Spots on Pear Tree Leaves? 1 Leaf Spot. Fabraea leaf spot is a fungal disease that causes purple or black spots to appear on the leaves of pear trees. 2 Treating Fabraea Leaf Spot. Treat fabraea leaf spot with fungicides and cultural controls. 3 Fire Blight. 4 Pear Tree Care. …
Why are the leaves on my pear tree turning purple?
Fabraea leaf spot is a fungal disease that causes purple or black spots to appear on the leaves of pear trees. These are fungal spore spots that spread the disease throughout the tree.
How can I tell if my pear tree has fireblight?
As well as yellow and dark green / black spots on the underside and top of leaves you may also see groups of the spores growing as small brown velvety mounds on the underside of leaves. Go to our dedicated scab page for treatment and prevention methods. The symptoms of fireblight are hard to miss even at the initial stages of infection.
Can a disease on a pear tree kill the fruit?
In advanced cases of this disease the fruit can also become deformed although this is unusual. Although the leaves can appear to be very damaged, fruit production is not significantly affected. Once you notice damaged leaves it’s impossible kill the existing midges which because they are protected by the surface of the affected leaves.
Why do pear tree leaves turn black?
Moths, caterpillars and other insects can attack your pear tree, causing blackened leaves or other damage to the tree. Some of the common culprits are the pear slug, the pear rust mite, the pear psylla, the codling moth larvae and the leaf roller caterpillar.
Why is my pear tree leaves dying?
Tiny, sap-sucking insects called psylla carry the phytoplasma organism that causes pear decline. Rolled leaves, leaf drop, poor fruiting and general decline of tree health characterize this decline. Trees with susceptible rootstocks may have sudden failure at the graft, causing the trees to die.
What are black spots on pear leaves?
Fabraea leaf spot is a fungal disease that causes purple or black spots to appear on the leaves of pear trees. These are fungal spore spots that spread the disease throughout the tree.
