What are the black dots on my cucumber plants?
Pseudomonas syringae on cucumbers causes dark spots on the leaves. Look closely and you’ll find that they are water-soaked lesions. In time they will grow into large, dark blotches. These blotches stop growing when they encounter major veins in the leaves.
How do I get rid of aphids on my cucumbers?

Conclusion
- Manually Remove Aphids.
- Spray Leaves or the Cucumbers that have Aphids.
- Use Insecticidal Soap.
- Use Commercial Pesticide.
- Apply an Organic Pesticide.
- Use Essential Oils.
- Dust Your Cucumbers & its leaves.
- Cut Back Your Cucumbers.
How do you get rid of bugs on cucumber plants?
Use yellow sticky traps to catch cucumber beetles and other pests. Knock beetles to the ground and catch them with a piece of cardboard placed under the plant. Or, use a handheld vacuum to suck up the beetles.
What can I spray on cucumber beetles?
A combination of pyrethrin insecticides and neem can effectively manage cucumber beetle, though you will likely need to apply more than once. Pyrethrins are contact insecticides that will kill most insects, including beneficials, so take care to apply either early or later in the day.

What does a cucumber beetle look like?
Cucumber Beetle Identification The striped cucumber beetle is either yellowish-green or orangeish-green with three black stripes down its back. The spotted cucumber beetle is also either yellowish-green or orangeish-green with 12 black spots on its back. Both pests are about 1/4 inch (0.5 cm.) long.
What are the tiny black bugs on my plants?
Black aphids are tiny insects no longer than ⅛” inches long that cling to your plants, pierce them and start sucking out the sap. The black plant lice do the same thing as red, orange, brown, green, yellow, and pink species of aphids – they destroy. Aphids also go by the following names: Plant Lice.
What does a cucumber bug look like?
Cucumber beetles are nasty little pests that attack cucumbers and related plants (squash, melons, pumpkins) throughout the growing season. The beetles look like 1/4-inch-long insects that are yellow-green in color with a series of black stripes or spots. Watch for them from spring to fall.
What are tiny black bugs on my plants?
Typical small black bugs that affect plants are fungus gnats, aphids, black flea beetles, spider mites, scale insects, and thrips. You will generally find the tiny bugs under plant leaves or stem joints. Usually, you’ll only notice the almost microscopic dark bugs when they start causing plant damage.
What are the bugs on my cucumbers?
Cucumber beetles, squash bugs, whiteflies, and aphids are among the most common bugs found on cucumber plants, and each requires a slightly different method of control.
How do you protect cucumbers from cucumber beetles?
You can try to protect your cucurbits by building a floating row cover or similar barrier during early to mid-June to keep the striped cucumber beetles away from your plants. Be sure to remove the barrier when cucurbits start to flower.
How do you repel cucumber beetles?
Interplant your cucurbits with plants that repel cucumber beetles. Heavy companion planting of fragrant herbs and flowers like marigolds, tansy, sage, and catnip can help confuse and repel the beetles. Try a trap crop. Plant a cucumber plant at the perimeter of your garden two weeks before your other cucurbits.
What is one prevention method used for the spotted cucumber beetle?
Use a physical barrier You can try to protect your cucurbits by building a floating row cover or similar barrier during early to mid-June to keep the striped cucumber beetles away from your plants. Be sure to remove the barrier when cucurbits start to flower.
What bug eats cucumber leaves?
Cucumber beetles
Cucumber beetles are nasty little pests that attack cucumbers and related plants (squash, melons, pumpkins) throughout the growing season. The beetles look like 1/4-inch-long insects that are yellow-green in color with a series of black stripes or spots.
What type of bugs eat cucumber plants?
The Most Common Cucumber Pests
- Aphids. Aphids are small, soft-bodied insects that like to hang out on the underside of the leaves and stems of plants.
- Cabbage Loopers. Don’t forget cabbage loopers (Trichoplusia ni) when watching for cucumber pests.
- Cucumber Beetles.
- Cutworms.
- Flea Beetles.
- Slugs & Snails.
- Thrips.
- Whiteflies.
What is a little tiny black bug?
Small black bugs can be tiny nuisance creatures like ants, beetles, weevils, or pirate bugs. Beetles and weevils are easy to identify because they have distinguishing hard shells covering two sets of wings and six legs. Small black ants have a recognizable slender body and tiny waist.
Do black aphids damage plants?
Damage: Black bean aphids are usually visible on plants because of their contrasting colour and the presence of ants. Aphids feed by sucking plant juices, so infested growth is often yellowed and curled. In addition to the direct damage that aphid feeding does to plants, aphids can transmit several diseases.
Can I use Sevin spray on cucumbers?
Answer: Sevin Concentrate is not labeled to control aphids on cucumbers. Instead we would recommend using a systemic product like the Monterey Fruit Tree and Vegetable Systemic Soil Drench for future protection and the Fertilome Triple Action for active aphids. 2 of 4 people found this answer helpful.
Will Sevin work on cucumber beetles?
Sevin Insect Killer Concentrate provides a simple, economical way to provide large-scale coverage of vining cucurbits or other cucumber beetle targets. Use with a pump-style sprayer, and spray plant surfaces thoroughly to kill listed pests by contact and protect against cucumber beetles for up to three months.
How do you control cucumber beetles organically?
How to Control Cucumber Beetles Organically
- Inspect Your Garden Regularly. Inspect your garden regularly for cucumber beetles, larvae, and eggs.
- Remove the Bugs and Eggs by Hand.
- Introduce Natural Predators.
- Apply Diatomaceous Earth.
- Apply Neem Oil.
- Apply Garlic and Pepper Spray.
- Apply Kaolin Clay.
- Remove Diseased Plants.
When should I plant to avoid cucumber beetles?
Cucumber beetles will emerge in mid spring, so row covers should be in place as soon as the plants are put in the ground to protect them from the cucumber beetles.
What do cucumber bugs look like?
Spotted types have black heads and 12 black spots on greenish-yellow wing coverings. Striped types have black heads and three black stripes running down yellow-orange wing covers. Both types have long, slender antennae. Cucumber beetle larvae are creamy white and wormlike, with slightly darker heads and tips.
What’s eating the leaves on my cucumber plants?
Rabbits, Voles, Woodchucks, Deer, Chipmunks, Squirrels. All eat leaves or fruits of plants in vegetable gardens.