Neem oil is an organic solution used as a pesticide to protect plants from insects, mites, and fungal diseases. Gardeners prefer neem oil because it is safe to use, does not harm humans or animals, and effectively targets pests that damage garden plants. If you want to learn more about how to use neem oil properly, continue reading this article.
Uses of Neem Oil
Here are the main reasons gardeners use neem oil:
- Neem oil is used to protect plants throughout the growing season because it can kill pests at every stage of their life cycle—eggs, larvae, and adults.
- It is used to control soft-bodied, sap-sucking insects such as aphids, mealybugs, spider mites, and whiteflies. Neem oil can also help manage Japanese beetles, lawn grubs, mites, and nematodes.
- Neem oil sprays are effective in treating fungal and bacterial diseases such as anthracnose, black spot, blight, fire blight, powdery mildew, and more.
How to Use Neem Oil
Neem oil products are available in different forms, including dust, granules, wettable powder, and liquid concentrates. Here’s how to use it depending on the type:
1. Dormant Spray
Use this spray when plants are dormant or not actively growing. For best results:
- Apply on a dry, wind-free day.
- Temperature should not be below 4°C (40°F).
- Avoid spraying if frost is expected.
2. Foliar Spray
A foliar neem oil spray is applied directly to the leaves at any time during the growing season to combat pests and diseases.
3. Soil Drench
A soil drench is made by diluting neem oil in water and pouring it into the soil.
The plant absorbs the solution through its roots, distributing it throughout the plant to reach hidden pests, eggs, larvae, and soil-borne fungal diseases.
This method works for outdoor plants and indoor potted plants.
Neem oil can also be used in liquid form by:
- Adding it to a spray bottle and misting the plant.
- Mixing it with water and mild soap, then wiping plant leaves.
- Dipping a cotton swab in warm water mixed with neem oil to treat small areas.
Can Neem Oil Be Used on All Plants?
Neem oil works on most plants but is ineffective on those without smooth surfaces.
Plants with fuzz, needles, or textured leaves allow pests to hide within the foliage, making neem oil less effective.
Plants with fuzzy leaves, such as calathea varieties, should not be treated with neem oil, as the oil can damage the leaves.
