Grasshoppers can quickly become a major problem for gardens and crop fields. These pests are known for their ability to lay eggs in areas with abundant food, allowing their populations to grow rapidly. If control measures are not applied at the right time, grasshoppers can develop wings and escape treatment, making them even harder to manage.
Effective control methods are essential to protect crops from these destructive insects. Using tools such as insecticides, apple cider vinegar, and garlic can help reclaim affected areas. By understanding how grasshoppers operate, landowners can take the necessary steps to safeguard their gardens and fields from these resilient pests.
Identifying Grasshoppers and Their Life Stages
Grasshoppers are known for their large hind legs, which help them jump far. Their bodies are solid and stocky, and they have short antennae. Many people often mistake them for crickets, katydids, locusts, or leafhoppers. Grasshoppers usually measure between 1 to 3 inches, but some can grow up to 5 inches in length. There are many different species, and they come in various colors, not just green.
In late summer and autumn, female grasshoppers lay their eggs in undisturbed areas like open fields and roadsides. They place the eggs in elongated pods near the top of the soil, about 2 inches deep. These eggs hatch in spring, typically between late April and early May, with most hatching peaking around mid-June.
Young grasshoppers, called nymphs, do not have wings and cannot fly. Instead, they hop and crawl to find plants to eat. They primarily feed on weeds, but when weeds become scarce, nymphs look for food in gardens, yards, and fields.
It’s important to manage pest control early in the summer, before nymphs develop their wings. After they have wings, they can easily fly away from any treatments.
Hot, dry summers and warm autumns often happen before a grasshopper outbreak. A single female can lay about 200 eggs each season, sometimes up to 400. If the weather remains favorable, the grasshopper population can increase significantly the following year. Warm temperatures can boost egg production and allow more nymphs and adults to survive, which may lead to larger infestations over time.
Damage
Grasshoppers feed on various plants, including lettuce, beans, corn, carrots, and onions. Their strong mouthparts can chew off large chunks of leaves and flowers. In some cases, they may even destroy entire plants.
Identifying grasshopper damage can start with noticing small holes in the leaves. It is important to remember that these holes can also be made by other pests like aphids or slugs, so further investigation is needed to confirm a grasshopper issue.
How to Eliminate Grasshoppers in Your Yard
Baits
Grasshopper baits are made from wheat bran mixed with insecticides like carbaryl or beneficial microbes. To use, spread the bait evenly across areas where grasshoppers are found. They will ingest the pesticide while searching for food. It’s important to reapply the bait after rain or watering.
Recommended brands include:
- Lily Miller Grasshopper Bait
- Sevin 5 Bait
- Eco Bran 2%
Dusts
The only approved dust insecticide for home gardens is carbaryl, often known by the brand name Sevin. This dust should also be reapplied after rain or watering. While dusts tend to cost more than sprays, they are simple to apply.
Sprays
Several insecticide sprays can help control grasshoppers, such as:
- Malathion
- Permethrin (available as Spectracide, Bonide Eight, Basic Solutions)
- Bifenthrin (found in Allectus, Brigade, Sniper, Talstar)
- Carbaryl (Sevin)
These sprays can kill grasshoppers on contact and also when they feed on treated plants. Users should be cautious, as some sprays are unsafe for edible plants and may require a licensed applicator. While they are generally cheaper than dusts, they can also harm helpful insects and other animals.
How to Eliminate Grasshoppers in Your Garden
Protective Covers
To safeguard sensitive vegetables and herbs from grasshoppers, use lightweight fabric row covers. These covers help keep pests away while allowing light and moisture to reach the plants. It is important to remove the covers during the day for flowers or vegetables that need pollination.
In some cases, determined grasshoppers may damage cloth or plastic covers. In such situations, metal screening offers a stronger barrier against these pests.
Attracting Birds
Introducing friendly birds like chickens or guinea hens can naturally control grasshopper populations. These birds are effective hunters of grasshoppers and can help keep the garden healthier. However, it is essential to build a sturdy fence around the garden to protect the plants from their curiosity, preventing them from wandering too close.
Building a Barrier
Creating a barrier around the garden using tall grass or green plants can help steer grasshoppers away from valuable crops. This natural diversion works best if left untrimmed, as mowing can eliminate the protective effect and allow grasshoppers to enter the garden more easily.
How to Eliminate Grasshoppers in Your Crop Field
Soil Preparation
To help cut down on grasshopper populations, farmers should till their fields in mid-summer. This disrupts areas where grasshoppers like to lay their eggs. It is important to weigh the benefits against possible downsides, such as reduced soil moisture and increased erosion.
Removing Weeds
Keeping fields free of weeds can limit the food supply for young grasshoppers. Nymphs rely on green plants for food, so reducing weeds can help keep their numbers low. Less vegetation also discourages adult females from laying eggs.
Additionally, maintaining short grass around crops can expose nymphs to their natural predators like birds, which helps control their population.
How to Get Rid of Grasshoppers Naturally
Neem Oil
Neem oil comes from the Neem tree and is used as a natural way to keep grasshoppers away. It helps stop them from laying eggs. This oil can be found in spray bottles at garden stores.
Vinegar
Using vinegar is another method to control grasshoppers. Mixing distilled white or apple cider vinegar with water and placing it in an open area can attract grasshoppers. They may end up feeding on the vinegar or falling into the solution.
Additionally, creating a vinegar spray is effective. Combine vinegar and water in a spray bottle. Spray the mixture on garden plants in the morning, when grasshoppers are most active. Repeat this every three days for the best results.
Garlic Spray
Garlic is known for its strong smell, which may keep grasshoppers from approaching plants. To make a garlic spray, crush two bulbs of garlic and boil them in water. After letting the mixture sit overnight, pour it into a spray bottle and apply it to vegetables.
Grasshopper Repellent Plants
Certain plants may help keep grasshoppers away. Gardening experts suggest planting cilantro, horehound, and calendula around the garden’s edges. Other flowers like lilac, forsythia, jasmine, and sage are also known for their potential repellent properties. It is important to note that the effectiveness of these plants has not been formally documented.
Flour
Using all-purpose flour can be an interesting method to manage grasshoppers. By sprinkling flour on plants, it can block the mouths of grasshoppers, causing them to starve. This simple approach may help reduce their presence in the garden.
Jump Into Action
Grasshoppers can seriously harm crops and plants. It’s important for individuals to choose between chemical or natural methods to control their numbers. The choice should fit their situation, preferences, and budget.
Treating grasshoppers early in the summer is key. If left unchecked, they can develop wings and easily escape control measures.
Common Questions About Grasshoppers
Do grasshoppers bite?
Grasshoppers generally do not bite humans. They may take a bite if they feel threatened or during a swarm. While their jaws are strong and bites can hurt, they are not harmful or venomous.
How do grasshoppers make sounds?
Grasshoppers are known for their unique songs. Male grasshoppers produce sounds to attract females by rubbing a hind leg against their forewings. This action causes the wings to vibrate and create music.
How many species of grasshoppers exist?
There are about 11,000 different species of grasshoppers. They come in many bright colors and patterns, which help them escape predators. A well-known species is the painted grasshopper, recognized for its vivid markings.
When to Contact a Pest Control Expert
Contact a pest control expert if grasshoppers keep damaging crops or vegetables. They can be tough to manage on your own. Professionals can use commercial insecticides and suggest ways to prevent future problems.
