What Are The Little Bugs on My Yarrow Plant

Yarrow plants (Achillea millefolium) are beautiful additions to any garden, with their delicate, feathery leaves and clusters of vibrant flowers. However, sometimes yarrow plants can become infested with little bugs that can damage the plant and hinder its growth. If you’ve noticed tiny insects crawling on your yarrow plant, it’s important to identify them and take appropriate measures to keep your plant healthy. In this article, we will discuss some common pests that can infest yarrow plants and how to deal with them.

Aphids

One of the most common pests found on yarrow plants is aphids. These small, soft-bodied insects feed on the sap of plants by piercing the leaves and stems with their mouthparts. Aphids come in various colors, including green, black, yellow, or brown. They reproduce quickly and can form large colonies if left unchecked.

The presence of aphids can cause damage to the yarrow plant by causing yellowing or curling of leaves, stunted growth, and distorted flowers. Additionally, aphids secrete a sticky substance called honeydew, which can attract ants and promote the growth of sooty mold.

To control aphids on your yarrow plant, you can try several methods:

1. Manual Removal: If the infestation is not severe, you can manually remove aphids from the plant by spraying them off with a strong stream of water or by gently wiping them away with a damp cloth.

2. Insecticidal Soap: Insecticidal soaps are effective in controlling aphids. These soaps suffocate the insects by clogging their breathing pores. Follow the instructions on the soap packaging carefully when applying it to your yarrow plant.

3. Beneficial Insects: Introducing natural predators of aphids, such as ladybugs or lacewings, can help control the population. These beneficial insects feed on aphids and can help keep their numbers in check.

Spider Mites

Spider mites are another common pest that can infest yarrow plants. These tiny arachnids are not actually insects but are more closely related to spiders. Spider mites feed on the sap of plants by piercing the plant cells with their mouthparts. They thrive in hot, dry conditions and are often found on the undersides of leaves.

Spider mite infestations can cause a stippled appearance on the leaves of yarrow plants, turning them yellow or bronze. The affected leaves may also become distorted or drop prematurely. Fine webbing may also be present on the plant if the infestation is severe.

To control spider mites on your yarrow plant, you can try the following methods:

1. Spraying with Water: Similar to aphids, spider mites can be dislodged from the plant by spraying them off with a strong stream of water. Make sure to target both the upper and lower surfaces of the leaves.

2. Neem Oil: Neem oil is an organic insecticide that can be effective against spider mites. It works by disrupting their feeding and reproductive systems. Dilute neem oil according to the instructions on the packaging and apply it to your yarrow plant.

3. Predatory Mites: Some species of predatory mites feed on spider mites and can help control their population. These beneficial mites can be purchased and released on your yarrow plant.

Leafhoppers

Leafhoppers are small, wedge-shaped insects that are known for their quick jumping movements. They feed on plant sap by puncturing the leaves with their mouthparts and sucking out the juices. Leafhopper damage on yarrow plants can cause stippling, yellowing or browning of leaves, and stunted growth.

Controlling leafhoppers on your yarrow plant can be done through the following methods:

1. Pruning: If the infestation is localized, you can prune off the affected parts of the plant and dispose of them properly. This can help prevent the infestation from spreading to other parts of the plant.

2. Insecticidal Soap: As with aphids, insecticidal soaps can also be effective in controlling leafhoppers. Follow the instructions on the packaging and apply it to your yarrow plant.

3. Reflective Mulch: Placing reflective mulch around your yarrow plant can deter leafhoppers. The reflective surface disorients them and makes it difficult for them to locate and feed on the plant.

Conclusion

Yarrow plants are susceptible to a variety of pests, including aphids, spider mites, and leafhoppers. These pests can cause damage to the plant and hinder its growth if not properly controlled. By identifying these pests early and taking appropriate measures, you can keep your yarrow plant healthy and thriving. Remember to always follow the instructions on any insecticides or treatments you use and consider using organic methods whenever possible. With a little care and attention, you can enjoy the beauty of your yarrow plants pest-free.