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The Global Insight

Why are there holes in my kale leaves

Author

Mia Horton

Updated on March 31, 2026

These small holes are telltale signs of the cabbage worm. … The adults come and lay their eggs on the leaves of cabbage, leaf lettuce, broccoli, cauliflower and kale and other leafy greens. The eggs quickly hatch and the young caterpillars start feeding.

Is it OK to eat kale with bug holes?

Treat Your Leafy Greens Carefully If you are pretty sure the holes in your leafy vegetables were caused by insects or slugs, they should be safe to eat, as long as you wash them thoroughly, and remove any damaged portions.

What causes tiny holes in leaves?

Holes are caused by insects with chewing mouthparts, such as caterpillars and beetles. … In most cases, holes in the leaves of your flowers mean insect pests, such as caterpillars or slugs. Look on the undersides of leaves for insects or inspect the ground for other telltale signs.

How do you stop holes in kale?

Mix water and a few drops of nontoxic dish detergent and put it into a spray bottle. Spritz the kale leaves with the soapy water. This coats the leaves with a bitter residue that repels bugs, while also suffocating any existing pests. Release ladybugs onto your kale plants.

Can you eat kale that has cabbage worms?

Cabbage Worms The worms will eat the kale from the underside without been noticed. These worms will leave behind only the stem and veins of the kale if not managed. You can remove this by hand and crush them. … One of the best methods of dealing with these worms is by the use of Bacillus thuringiensis every few weeks.

Should I cut off bug eaten leaves?

If the leaf is more than half damaged by the bug, then you should cut it off the tree or plant. The same is true if the leaves have become yellowed or brown because of damage from bugs. Cutting the affected leaves off will direct needed nutrients to the other healthier leaves and allow them to thrive.

What are the bugs on my kale?

Aphids (Aphididae family) Aphids are a family of small insects with soft bodies and sucking mouthparts. Large groups of aphids often appear on kale plants, causing a fuzzy or spotted appearance. The bugs themselves suck the juices out of the plant, which can lead to discolored leaves.

How do you protect bugs from kale?

Many types of insects can afflict kale, ranging from cabbage butterflies to thrips and flea beetles. You can help protect your plants by using floating row covers. These covers prevent splashing water – that may contain pathogens – from touching the foliage, and can prevent insects from laying their eggs on crops.

How do you treat holes in leaves?

Leaf miners burrow twisting tunnels across leaves. For both, treat with insecticidal soap or horticultural oil. Sucking insects poke tiny holes in leaves and draw the juices out of them. Common sucking insects include aphids, squash bugs, and spider mites.

What can you plant with kale to keep bugs away?

Planting dill near kale will protect kale seedlings as they mature. Alliums: Alliums like chives, shallots, and leeks deter common pests like flea beetles, cabbage loopers, and aphids that prey on kale leaves. Legumes: Legumes of all varieties enrich the soil around your kale by increasing the soil’s nitrogen content.

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Can I spray my plants with soapy water?

Simply spraying the whole plant with soapy water won’t work. The soap needs to coat the insects thoroughly—not the leaves—in order to kill them.)

What is eating holes in my vegetable leaves?

Chewing Damage If you see holes or ragged chunks of leaves disappearing and the damage has been occurring slowly, with a little feeding each night, beetles, caterpillars, earwigs or slugs may be the culprits.

What can you spray on vegetable plants to keep bugs off?

Vegetable Oil Use 1 tablespoon of mild soap (like dish soap or castile soap) to 1 cup of vegetable oil. Mix well. Add 2 tablespoons of the oil mix to 1 quart of water and pour into a spray bottle. Spray the top and bottom of each leaf where the insects are dwelling and the stems if needed.

How do you remove kale from worms?

Rinse Them Under Running Water A better way of sanitizing leafy greens like lettuce and kale would be to fill up a large pot with cool water and place the leaves in. Swish around a bit and allow them to sit for 5-10 minutes. The dirt and parasites will settle at the bottom. Some might even float on top.

What does cabbage worm poop look like?

Signs of cabbage worm damage are holes in the leaves or flower stalks (as is often the case with broccoli), skeletonized leaves, and the presence of their dark green, round, pelleted excrement, called frass.

How do I get rid of cabbage worms on my plants?

Spraying with Bt (Bacillus thuringiensis var. kurstaki) every 1 to 2 weeks will also help control cabbage family pests. Sevin also is effective. And, the few pests that remain on the vegetables can be washed out after harvest using water and a small amount of detergent or other surfactant.

How do I keep aphids off my kale?

Controlling Aphids on Kale Clip off badly infested kale leaves and immediately dispose of them in an active compost pile. Without a live plant host, they will soon perish. Follow up with a botanical spray (like those described below), insecticidal soap, or a light horticultural oil.

What is eating my kale plant?

While slugs and snails have been known to eat from kale, your culprit is most likely going to be caterpillars. Caterpillars are the first thing I expect to find whenever I start seeing holes in the leaves of my Brassica plants, kale included.

What are the tiny holes in leaves called?

Stomata (noun, “STO-mah-tah”, singular “stoma”) These are the small pores in plant stems or leaves that allow carbon dioxide in and oxygen and water vapor out. Each tiny hole is surrounded by a pair of cells called guard cells.

What is a natural way to get rid of bugs on plants?

  1. Baby Shampoo Bug Spray.
  2. Cooking Oil Spray.
  3. Herbal Water Spray.
  4. Dish Soap Spray.
  5. Neem Oil.
  6. Rubbing Alcohol.
  7. Essential Oils.
  8. Sticky Fly Paper.

How do I keep bugs out of my vegetable garden naturally?

  1. Start with “Clean” Soil. Good soil can actually deter garden insect pests. …
  2. Buy Disease and Pest-Resistant Seeds. …
  3. Selectively and Aggressively Thin Out Plants. …
  4. Water Plants in the Early Morning. …
  5. Control Weeds. …
  6. Keep your Garden Clean. …
  7. Use Insect Traps. …
  8. Add Beneficial Insects.

Does kale need to be covered?

Cold-hardy and resilient, kale is an easy member of the cabbage family to grow. You can set out plants quite early in spring as long as you protect the young plants from severe cold winds with a cover. They will grow steadily for months until the weather gets too warm.

Can you plant basil next to kale?

Companion planting kale will repel some of the common pests that affect the plants. However, for some reason, kale does not enjoy the companionship of basil. The kale will do well with potatoes but will not get along well tomatoes. Additionally,kale will not do well with strawberries.

Can you plant kale and cucumbers together?

Planting Kale Kale is buddy-buddy with beets, celery, cucumbers, herbs, onions, spinach, chard, and potatoes. It isn’t happy growing next to beans, strawberries, or tomatoes. Keep soil moist to encourage consistent growth.

Can tomatoes and kale be planted together?

Go ahead and plant tomatoes and kale together. Just make sure you feed them with supplementary fertilizer, because they both want a lot of nitrogen.

Is vinegar bad for plants?

Though vinegar can be fatal to many common plants, others, like rhododendrons, hydrangeas and gardenias, thrive on acidity which makes a bit of vinegar the best pick-me-up. Combine one cup of plain white vinegar with a gallon of water and use the next time you water these plants to see some amazing results.

Can Dawn be used as insecticidal soap?

Many gardeners successfully use Dawn as the liquid soap in their insecticidal soap solution, but unlike a pure soap, such as castile, Dawn contains artificial colors and ingredients.

Is Palmolive dish soap safe for plants?

Is Palmolive dish soap safe for plants? Palmolive dish soap is safe for plants if you use it in a small amount mixed with water. You should select a variety that has as minimal additives as possible so they don’t damage the plant.

How do I keep bugs from eating my plants naturally?

Make A Stink: Many aromatic herbs, like yarrow, citronella, mint, fennel, catnip, basil, and lemongrass are natural deterrents for garden pests from aphids to potato beetles. As an added bonus, some of these herbs also attract the predators that keep pests under control.

How do I stop slugs eating my plants?

  1. Get plants on side. …
  2. Remove shelter & encourage beneficial wildlife. …
  3. Make a beer trap. …
  4. Create a prickly barrier. …
  5. Create a slippery barrier. …
  6. Lay down copper tape. …
  7. Place a lure. …
  8. Apply nematodes to soil.

How do you get rid of green leafy worms?

Spraying leaves with BT (Bacillus thuringiensis) will work and is an organic solution. Plant resistant varieties such as red-colored leafy greens, which the cabbage worm tend to avoid. Introduce natural predators of the cabbage worm such as larvae of Trichogramma wasps, which devour the eggs before they hatch.