Updated: May 11, 2024

Grasshoppers are known to be voracious eaters and can wreak havoc on a garden, particularly targeting plants like bistort. Bistort plants, with their lush foliage and vibrant flowers, can attract these pesky insects, leading to damage that can stunt growth and hinder the plant’s overall health. However, there are several effective methods you can employ to get rid of grasshoppers on your bistort plant and protect your garden from further infestation.

1. Physical Removal

One of the simplest and most immediate ways to control grasshoppers on your bistort plant is by physically removing them. You can do this by handpicking the grasshoppers off the plant and dropping them into a bucket of soapy water to kill them. This method is labor-intensive but can be effective for small infestations.

2. Barriers

Creating physical barriers around your bistort plant can help deter grasshoppers from reaching them. Use row covers or mesh netting to protect the plant from grasshopper feeding. Make sure the barriers are secure and cover the entire plant to prevent any access points for the grasshoppers.

3. Natural Predators

Introducing natural predators of grasshoppers into your garden can help control their population effectively. Birds such as sparrows, swallows, and starlings are known to feed on grasshoppers. You can also attract beneficial insects like ladybugs, lacewings, and praying mantises, which prey on grasshoppers and other garden pests.

4. Neem Oil

Neem oil is a natural insecticide derived from the neem tree and is effective in repelling grasshoppers from your bistort plant. Mix neem oil with water according to the instructions on the product label and spray it onto the plant, focusing on areas where grasshoppers are most active. Reapply the neem oil regularly, especially after rainfall.

5. Diatomaceous Earth

Diatomaceous earth is a powdery substance made from fossilized algae that can be sprinkled around the base of your bistort plant to create a barrier against grasshoppers. When grasshoppers come into contact with diatomaceous earth, it dehydrates their bodies, eventually leading to their demise. Make sure to reapply the diatomaceous earth after watering or rainfall.

6. Garlic Spray

Garlic has natural repellent properties that can help keep grasshoppers away from your bistort plant. To make a garlic spray, crush several cloves of garlic and steep them in hot water for a few hours. Strain the mixture and add it to a spray bottle. Coat the leaves of the plant with the garlic spray, paying extra attention to areas where grasshoppers are present.

7. Plant Diversity

Planting a diverse range of vegetation in your garden can help deter grasshoppers from targeting specific plants like bistort. Interplant aromatic herbs such as mint, basil, and lavender among your bistort plants to confuse and repel grasshoppers with their strong scents.

8. Beneficial Nematodes

Beneficial nematodes are microscopic worms that prey on insect larvae in the soil, including grasshopper eggs. You can introduce beneficial nematodes into the soil around your bistort plant to target grasshopper populations at their source. Follow the instructions provided with the nematodes for optimal application.

9. Companion Planting

Companion planting involves strategically placing plants together that benefit each other in various ways. Planting marigolds, calendula, or nasturtiums near your bistort plant can help repel grasshoppers due to their strong scents and natural pest-repelling properties.

10. Regular Maintenance

Maintaining good garden hygiene practices such as removing weeds, debris, and dead plant material can help reduce hiding spots and breeding grounds for grasshoppers. Keep your garden clean and tidy to discourage grasshoppers from taking up residence in your outdoor space.

By implementing these methods and strategies, you can effectively get rid of grasshoppers on your bistort plant and protect it from further damage. Remember that persistence and consistency are key when dealing with pest infestations in your garden. With patience and dedication, you can ensure a healthy and thriving garden free from pesky grasshoppers.