How To Tell If Blueberries Have Worms

You can tell if blueberries have worms by checking for tiny holes, mushy spots, or small white larvae near the stem.
 
It sounds gross, but finding worms in blueberries is more common than you might think.
 
The good news is that these worms are usually the larvae of fruit flies or spotted wing drosophila, and they won’t harm you if you accidentally eat one.
 
Still, nobody wants a side of larvae with their morning smoothie, so let’s talk about how to tell if blueberries have worms and what you can do about it.
 
In this post, we’ll cover the signs that blueberries have worms, how to check for them, and the best ways to clean your berries before eating.
 
Let’s dive in.
 

How to Tell if Blueberries Have Worms

Learning how to tell if blueberries have worms starts with knowing what to look for.
 
Worms in blueberries aren’t always obvious, but there are a few telltale signs that can help you spot them before they end up in your bowl.
 
Here’s what to keep an eye out for.
 

1. Tiny Holes or Dimples on the Surface

One of the first signs that blueberries have worms is small, pin-sized holes on the skin.
 
These holes are where the female fruit fly laid her eggs, and they’re often hard to see at a glance.
 
You may also notice slight dimples or soft spots around the holes, which happen as the larvae begin feeding inside.
 
If you’re checking a batch of blueberries for worms, look at each berry under bright light and pay close attention to the area near the stem.
 

2. Mushy or Discolored Spots

When worms are present in blueberries, the berries often start to break down from the inside.
 
You’ll see mushy spots, brown patches, or areas that look bruised even though the berry wasn’t handled roughly.
 
This happens because the larvae feed on the flesh, causing the fruit to rot faster than healthy berries.
 
So if you’ve got blueberries with worms, they’ll usually feel softer and look duller than the firm, plump ones around them.
 

3. Small White Larvae Near the Stem

The clearest way to tell if blueberries have worms is to spot the larvae themselves.
 
They’re small, white, and often legless, and they tend to hang out near the stem end or just under the skin.
 
Sometimes you’ll see them crawling on the surface if the berry has been sitting out for a while.
 
If you suspect worms in blueberries, cut a few open and check the inside carefully.
 
 

Ways to Check Blueberries for Worms

Now that you know what to look for, here are a few simple methods to check whether your blueberries have worms.
 
These tricks are quick, easy, and will save you from any unpleasant surprises.
 

1. The Salt Water Test

The salt water test is one of the most popular ways to check for worms in blueberries.
 
Just dissolve a cup of salt in a bowl of warm water, then drop your blueberries in and let them soak for about 15 minutes.
 
If there are worms in the blueberries, they’ll wiggle out and float to the surface.
 
After soaking, rinse the berries thoroughly with fresh water and pat them dry.
 

2. Inspect Under Bright Light

A bright light makes it much easier to tell if blueberries have worms.
 
Spread your berries on a white plate or paper towel and shine a strong light on them.
 
Look for tiny holes, dull spots, or anything moving.
 
This method won’t catch every single worm, but it’s a great first step before you commit to eating them.
 

3. Cut a Few Open

If you’re really unsure whether blueberries have worms, grab a small knife and slice a few berries in half.
 
Check the inside for larvae, dark tunnels, or mushy areas.
 
If the inside looks clean and firm, chances are the rest of the batch is fine too.
 
 

What to Do if Your Blueberries Have Worms

So you’ve confirmed that your blueberries have worms.
 
Now what?
 
First, don’t panic, because worms in blueberries are a natural part of growing fruit and they’re not a sign that the berries are unsafe.
 
You can still eat the berries after a good soak in salt water and a thorough rinse.
 
If you’d rather not eat them at all, toss the affected berries into the compost and buy a fresh batch.
 
Going forward, store your blueberries in the fridge and wash them just before eating to keep worms from showing up in the first place.
 
 

So, How to Tell if Blueberries Have Worms?

You can tell if blueberries have worms by checking for tiny holes, mushy spots, or small white larvae near the stem.
 
It sounds gross, but finding worms in blueberries is more common than you might think.
 
Use the salt water test, bright light inspection, or cut a few berries open to confirm.
 
And remember, even if blueberries have worms, they’re not harmful, and a quick soak will take care of the problem.
 
Hope this post has helped you figure out how to tell if blueberries have worms so you can enjoy your berries with confidence.