Worms in Cherries? Prevent them now! - The Greenery Nursery (2024)

In the past several years, there have been an increasing number of insects damaging our precious cherries! Treatment has to be done weeks ahead of time to stop the damage; otherwise, the insecticide will not be able to reach the worms inside the fruit.

What is it?
Western Cherry Fruit Fly
Worms in Cherries? Prevent them now! - The Greenery Nursery (1)

What does it do?
In May, as the cherries begin to turn color, the flies begin mating and laying their eggs. These eggs are inserted and deposited inside ripening fruit, leaving very little evidence of the fact. That is why there are worms inside when we go to pick and eat the cherries!

What do I do?

For the homeowner, monitoring and spraying are the simplest things to do. As soon as cherries begin to color, put out Pest Wizard Deciduous Fruit Fly traps to monitor when the flies are present. This step can be eliminated, and you can just begin spraying as the fruit begins to color, but I always spray (even organic sprays) as little as possible so you can wait until you find adult flies to reduce the number of applications.

You can spray a few different things, but I recommend Monterey Garden Insect Spray. The active ingredient, Spinosad, is not as toxic as Malathion or Sevin yet effective on certain insects. It is also OMRI listed! Begin spraying as soon as you see the adult flies on the traps or as the cherry begins to turn color. Spray once per week until harvest.

So it is simple, just a matter of being prepared. I hope this helps!

Happy Cherry Season!

-Adria

Worms in Cherries? Prevent them now! - The Greenery Nursery (2024)

FAQs

Is it safe to eat cherries with worms in them? ›

Expert Response. Consuming fruit fly larvae is not harmful, but most Americans don't prefer to have a little extra protein with their fruit so will not consume them. . If you can the fruit most of the worms will float to the top of the jar and can be removed. They are not harmful.

How do you prevent worms in cherries? ›

You can spray a few different things, but I recommend Monterey Garden Insect Spray. The active ingredient, Spinosad, is not as toxic as Malathion or Sevin yet effective on certain insects. It is also OMRI listed! Begin spraying as soon as you see the adult flies on the traps or as the cherry begins to turn color.

When should I spray my cherry trees for worms? ›

Good control can be achieved with a few well-timed pesticide sprayings beginning when the earliest maturing variety in the orchard is just starting to turn from green to straw-colored. Traps should also be set to determine if the fruit flies are present.

What are the worms on my cherry tree leaves? ›

The greenish worm is probably the pear slug. The pear slug is not an actual slug. It's the larval stage of an insect (sawfly). The pear slug feeds on pear, cherry, plum, and several other woody plants.

How to check if cherries have worms? ›

If you submerge the cherries in water, it is the worms (the larvae of cherry fruit fly) that may float to the top. if these larvae appear in the water, you can look for the damaged cherries.

What not to eat with cherries? ›

These fruits include watermelon, blackberries, nectarines, pears, apples and avocado. Knowing this, you don't want to eat cherries as part of a big fruit salad with these potentially problematic foods. On the flip side, enjoy cherries with foods you know you tolerate well.

Is it safe to eat cherries straight from the tree? ›

Generally, cherries are a safe fruit to eat. They contain plenty of healthy antioxidants, but eating too many cherries can cause gas and bloating. Ultimately, you'll want to avoid the fruit pits, bark, leaves and stem — these parts of the plant can be toxic.

What can I spray on fruit trees to prevent worms? ›

My favorite is called Bonide Fruit Tree Spray. It contains malathion and carbaryl, as well as captan for disease control, and a spreader sticker for more effectiveness. Codling moths generally don't emerge in east Idaho until late May or early June, so now is a good time to start spraying.

What is the best way to clean cherries? ›

In a white vinegar solution: To quickly clean fresh cherries from the grocery store or farmers market, fill a large bowl with cold water and add one cup of white vinegar. Let the cherries soak for fifteen minutes. The vinegar will kill microorganisms and remove residual pesticides.

What do farmers spray on cherry trees? ›

Powdery mildew and aphids Wettable sulfur (not lime sulfur) or insecticidal soap. Summer sprays: Also called cover sprays because they cover leaves and fruit Cherry Fruit Fly Malathion every 10 days beginning when cherry fruits turn yellowish. (Usually late May). Allow 3 days minimum to harvest.

What should I spray on my cherry tree? ›

Pest Control Sprays:
  • Monterey Horticultural Oil.
  • Hi-Yield® Vegetable & Ornamental Insect Control.
  • Safer® Brand Insect Killing Soap.
  • Natural Guard® Caterpillar Killer Spray w/BT.
  • GardenTech® Sevin® Bug Killer.
  • Hi-Yield® Captan 50W Fungicide.
  • Monterey Liquid Copper Fungicide.
  • Ferti-Lome® Fire Blight Spray.

How do you keep cherry trees healthy? ›

According to Watkins, flowering cherry trees perform best in full sun and well-draining soils. "They need water during establishment and supplemental irrigation during hot and dry months," he says, noting that you should regularly offer them a tree-specific fertilizer to encourage healthy growth.

What to do if your cherries have worms? ›

Once the eggs are laid, they hatch into little white worms that feed on the inside of the developing fruit. Contact your local county Extension agent to learn when to begin spraying cherry trees in your area. Then let your neighbors know and encourage them to spray as well to help keep the fruit fly populations down.

How do you get rid of fruit worms? ›

Use chemical pesticides. The pest has developed a resistance to many pesticides but the following pesticides are often used: esfenvalerate (Asana), methomyl (Lannate), azinphos-methyl (Guthion), carbaryl (Sevin), or pyrethrin. These must be applied before the worm enters the fruit.

Can you eat a fruit that had a worm in it? ›

"Although the sight of translucent worms crawling out of a fresh strawberry fruit might not be appealing, there are no known ill effects of eating them," said Lahiri. "In fact, if you accidentally consumed some maggots, all you did was get some extra animal protein in your salad or fruit shake."

How do I know if cherries are safe to eat? ›

Generally, cherries are a safe fruit to eat. They contain plenty of healthy antioxidants, but eating too many cherries can cause gas and bloating. Ultimately, you'll want to avoid the fruit pits, bark, leaves and stem — these parts of the plant can be toxic.

What happens to the fruit when there are worms? ›

Answer: Damaged fruit appear shrunken and shriveled when ripe,and usually contain one off-white larva(maggot) that is slightly longer than one-quarter of an inch.

What are the little white worms in my fruit? ›

The small, white worms are likely the larvae of the spotted wing drosophila. Spotted wing drosophila adults are small, yellowish brown flies. Males have distinctive dark spots on their wings, hence the name spotted wing drosophila. Female adults have serrated, saw-like ovipositors and lay eggs in soft, ripening fruit.

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