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How to Get Rid of Worms in Rhubarb Plant

Updated: July 25, 2023

Rhubarb is a popular plant among gardeners, prized for its tart and tangy stalks that can be used in a variety of delicious dishes. However, like any other plant, rhubarb is susceptible to pests and diseases. One common problem that gardeners face is worms infesting their rhubarb plants. These worms can cause extensive damage if not dealt with promptly. In this article, we will discuss effective methods to get rid of worms in your rhubarb plant and ensure a healthy harvest.

Identifying the Culprits

Before you can effectively combat the worm infestation in your rhubarb plant, it’s important to identify the specific type of worm causing the damage. The most common worms found in rhubarb plants are the rhubarb curculio and the rhubarb crown borer.

The rhubarb curculio is a small, dark-colored beetle that lays its eggs on the stalks of the rhubarb plant. The larvae hatch and bore into the stalks, causing them to become discolored and mushy. The rhubarb crown borer, on the other hand, is a caterpillar that tunnels into the base of the plant, feeding on its tissues and weakening it.

Natural Remedies

When it comes to dealing with worms in your rhubarb plant, natural remedies can be both effective and environmentally friendly. Here are some natural methods you can try:

Handpicking

One of the simplest ways to get rid of worms in your rhubarb plant is by handpicking them. Inspect your plant regularly and remove any visible worms manually. Be sure to wear gloves while doing this to protect your hands from any potential irritants.

Neem Oil

Neem oil is derived from the neem tree and has insecticidal properties that can help control worms in your rhubarb plant. Mix a few drops of neem oil with water in a spray bottle and apply it to the affected areas of the plant. Repeat this process every few days until the infestation is under control.

Garlic Spray

Garlic has natural insect-repellent properties that can deter worms from infesting your rhubarb plant. To make a garlic spray, crush a few cloves of garlic and steep them in water overnight. Strain the mixture and add it to a spray bottle. Spray the solution onto the affected areas of the plant, making sure to cover both the upper and lower surfaces of the leaves.

Beneficial Nematodes

Beneficial nematodes are microscopic organisms that prey on pests like worms. These nematodes can be purchased online or at garden centers. Follow the instructions provided with the nematodes to properly apply them to your rhubarb plant. They will infect and kill the worms, reducing their population over time.

Chemical Solutions

If natural remedies do not effectively eliminate the worm infestation in your rhubarb plant, you may need to resort to chemical solutions. However, it’s important to use these chemicals carefully and responsibly, following all safety precautions.

Insecticide Sprays

Insecticide sprays containing chemicals like carbaryl or permethrin can be used as a last resort to control worms in your rhubarb plant. These sprays should be applied according to the instructions provided on the packaging. Remember to wear protective clothing and avoid spraying on windy days to minimize potential harm to beneficial insects and pollinators.

Soil Drenches

Soil drenches containing systemic insecticides can be effective in controlling worms that attack the base of your rhubarb plant. These insecticides are absorbed by the roots and transported throughout the plant, killing any worms that feed on it. Follow the instructions provided with the soil drench product to ensure safe and effective application.

Preventive Measures

Preventing worm infestations in your rhubarb plant is always better than dealing with them after they have occurred. Here are some preventive measures you can take to keep worms at bay:

  • Crop rotation: Avoid planting rhubarb in the same spot year after year. Rotate your crops to reduce the risk of recurring worm infestations.
  • Clean cultivation: Remove any plant debris or fallen leaves from the vicinity of your rhubarb plant. These can provide hiding places for worms and other pests.
  • Proper hygiene: Practice good garden hygiene by regularly cleaning and sanitizing your gardening tools and equipment. This helps prevent the spread of pests and diseases.
  • Mulching: Mulching around your rhubarb plant can help deter worms from laying their eggs on the stalks. Use organic mulch like straw or wood chips to create a protective barrier.

By following these preventive measures and using effective remedies, you can effectively control and eliminate worms in your rhubarb plant. Remember, maintaining a healthy and pest-free garden requires consistent care and attention. Happy gardening!