Apple

Common Diseases of Apple Trees

Common Diseases of Apple Trees
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  • Pierce Walters

Below are a few of the most common apple diseases:

  1. What diseases can apple trees get?
  2. What does a diseased apple tree look like?
  3. What's wrong with my apple tree leaves?
  4. Why are branches dying on my apple tree?
  5. What do I spray my apple trees with?
  6. What is the lifespan of an apple tree?
  7. What is the best fungicide for fruit trees?
  8. How do I know if my apple tree is dying?
  9. What kills an apple tree?
  10. How often should I spray my apple trees?

What diseases can apple trees get?

Take a look at some of the common problems you might encounter on an apple tree.

What does a diseased apple tree look like?

Infected leaves form spots thought to look like frog eyes with reddish edges and tan middles. Large, brown, rotten spots develop on the apple, most commonly on the blossom end. ... The fungus infects leaves, wood, and fruit through openings or wounds. Trees are most vulnerable to black rot when infected with fire blight.

What's wrong with my apple tree leaves?

Cedar-apple rust is the most common. Rust will commonly appear as yellow-orange spots on the leaves, branches and fruit of the apple tree. Collar Rot – Collar rot is a particularly bad apple tree problem. Initially, it will cause stunted or delayed growth and blossoming, yellowing leaves and leaf drop.

Why are branches dying on my apple tree?

Botryosphaeria obtuse or Black rot canker is a fungal disease that results in leaf spot, fruit rot and cankers on branches. Remove all of the dead branches from the tree. Prune out dead or diseased branches, and pick all mummy fruits remaining on the trees, as these are sources of spores for future infections.

What do I spray my apple trees with?

Horticultural oil is a well known insecticide for application during a tree's dormant period to prevent unintended harm to beneficial insects such as bees and ladybugs. The University of California recommends spraying apple trees with dormant oil in the winter to control San Jose scale, and aphid and mite eggs.

What is the lifespan of an apple tree?

While the Bramley apple tree has been known to live for 200 years, the average lifespan of the apple tree is closer to 100 years, with between 30 and 40 of those years being fruitful. Crabapple trees live between 30 and 50 years.

What is the best fungicide for fruit trees?

Systemic fungicides like Inspire Super, Vangard, Scala, Flint, Sovran, Merivon, Pristine, Luna Sensation, Luna Tranquility, Fontelis, Rubigan, and Rally are highly effective against many tree fruit diseases.

How do I know if my apple tree is dying?

Symptoms of a Sick or Dying Tree

Visible symptoms include: mushroom-like spores, an expanded base, dead branches, and soft, breakable wood. These are also an indicator that your tree is sickly. If your tree's branches don't look very attached to the tree, there is a problem.

What kills an apple tree?

Below are a few of the most common apple diseases:

  1. Apple Scab. Apple scab is one of the most common and most serious diseases that afflict apple trees. ...
  2. Fire Blight. ...
  3. Cork Spot. ...
  4. Powdery Mildew. ...
  5. Rust. ...
  6. Black Rot and Frog Eye Leaf Spot. ...
  7. Phytophthora Rot. ...
  8. Crown Rot.

How often should I spray my apple trees?

Use dormant sprays in late winter to kill overwintering insect pests on fruit trees. Apply dormant oil in late winter or early spring if there was intense pest pressure during the previous growing season. This treatment normally goes on every three to five years.

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