Cicada Mania

Dedicated to cicadas, the most amazing insects in the world.

July 5, 2015

How can I prevent cicadas from damaging my plants?

Filed under: FAQs | Magicicada | Ovipositing — Dan @ 7:17 pm

How can I prevent cicadas from damaging my plants? Assuming they actually will, there are several solutions.

  1. You can wrap netting, or insect exclusion screens, around small trees or individual tree limbs to keep the cicadas off them. You can get this netting from stores (in person or Online) that sell landscaping supplies.
  2. You can use insect barrier tape or a sticky solution like “Tanglefoot Pest Barrier”. Not my favorite idea, because it will probably pull their tarsal claws off.
  3. You can manually pick them off with your hand. Put your kids to work. A friend who lived in Italy told me she had to pick Cicada orni off vines at her family vineyard.
  4. You can spray them off with a hose. Just don’t spray the leaves of your trees in the process. Don’t use a power washer.
  5. See Green Methods for more ideas.

Here is an example of netting being used to contain cicadas, except in this case the cicadas are being kept next to the tree branch and not away from it:

As you might imagine, if the netting can keep them inside, it will also keep then outside.

Damage from cicadas occurs when the female cicada creates in the branch of a tree with her ovipositor (see video).
An illustraition of egg nests:
The ovipositor is sharp and able to carve into the bark and cambium of the branch. Damage from cicadas becomes visible in the form of “flagging” as branches die. This behavior is vital to cicada reproduction, and native species of trees have evolved to survive it. Weaker, petite, ornamental and non-native fruit trees won’t fare as well. It seems counter-intuitive that cicadas would damage the very trees that they feed off of their entire lives (via root systems), but that is how they have co-evolved — with the cicada feeding on tree fluids & fertilizing trees when they die in return. Flagging can be positive for trees as well, as it prunes weaker branches. But again, weak, tiny, ornamental, fruit trees and non-native species aren’t adapted to this relationship with the cicadas.

We recommend that you don’t bother with pesticides for a number of reasons:

  1. New cicadas will continually fly onto your trees from neighbor’s yards, making pesticides futile.
  2. Your pets could become poisoned from ingesting too many treated cicadas.
  3. Collateral damage — you end up killing other insects like honey bees and butterflies. There is a lot of concern about the extinction of insects in general, as well as cicadas.


  1. Liam says:

    I have a lot of fruit trees that I put in last year, but they are still very young – what’s the minimum size branch we’re talking about for it to be be viable for ovipositing? I’m trying to gauge whether I need to protect everything, or just some things beyond a certain size. My trees are still like woody perennial shrub size.

    Thanks in advance!

    1. Dan says:

      I’d say that the right size where you should think about taking precautions. Periodical cicadas don’t appear everywhere, so if you purchase supplies to deal with them, make sure they’re returnable in case you don’t have to use them.

  2. Samuel Silverman says:

    Planning on planting 8-10 Green Giant Arborvitae next week in back yard as hedge. We live just north of Atlanta. Should we be concerned and wait until later in the year to transplant these trees?

    1. Dan says:

      You might be safe where you are. Take a look at the map on this page, and see if you fall in the area where there were cicada sightings in the past. You can always wait until July to plant.

  3. Dan G. says:

    Just found a Periodical Cicada in the backyard. It was in the grass and the Dog spotted it. I am located in the Bay Area, California. I have a recently pruned Dogwood Tree nearby, should I be concerned? Any steps I can take?

    1. Dan says:

      @Dan, being that you’re in California, it wouldn’t be a Periodical. More likely it’s an annual species like an Okanagana that shares similar colors. That said, you have little to fear from annual cicadas. Don’t be concerned.

  4. Will cicadas damage beans, corn, tomatoes, and other vegetable plants

    1. Dan says:

      @Mildred, fortunately they shouldn’t. They’re interested in trees and shrubs that have bark, not vegetables. They don’t have mouths that chew, so they can’t eat leaves or vegetables. The damage they cause happens when the females lay their eggs, and they do that mostly in tree branches.

  5. JIM GUIDAS says:

    DID THE CICADAS EAT “possible wood chips to do this?????

    1. Dan says:

      Cicadas only drink sap from plant roots, so the saw dust would not be from cicadas. It might be from a carpenter bee or other insect that chews wood.

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