Neem Oil
A cold-pressed vegetable oil derived from the neem tree that disrupts the life cycle of a wide range of soft-bodied and sucking insects.
What it is
Neem oil is extracted from the seeds of the neem tree (Azadirachta indica), native to South Asia. Its active compound, azadirachtin, has been used in traditional farming for centuries. It is fully certified for organic use and breaks down rapidly in the environment.
What it does
Azadirachtin interferes with insect hormone systems, suppressing moulting, feeding, and reproduction without killing on contact alone. Repeated applications reduce population numbers across generations. It also has some antifungal properties and can suppress early-stage fungal infections.
When to use
Apply at the first sign of pest activity, or as a preventive spray every 10 - 14 days during high-risk periods. Always apply at dusk or dawn to avoid harming pollinators and to prevent rapid photodegradation. Effective across a wide temperature range but most active above 60°F.
When not to use
Do not apply in direct sunlight or at midday as the oil degrades quickly and leaf scorch can occur. Avoid spraying open flowers where pollinators are actively foraging. Do not apply to water-stressed plants as the oil can worsen dehydration stress.
How to apply
- 1
Mix 2 tablespoons of cold-pressed neem oil with 1 teaspoon of pure castile soap in a small amount of warm water until fully emulsified.
- 2
Add the emulsified mixture to 1 quart of warm water and stir thoroughly.
- 3
Transfer to a clean spray bottle or garden sprayer. Use immediately as the mixture degrades within a few hours.
- 4
Spray all plant surfaces thoroughly at dusk, paying particular attention to leaf undersides where most pests congregate.
- 5
Repeat every 7 - 10 days for three applications, then monitor and resume if pest pressure returns.
Used for
Garden, by Willowbottom recommends only organic, wildlife-friendly solutions. No synthetic pesticides, no harmful chemicals - ever.