These small insects can wreak havoc on your plants, especially fruit trees and shrubs.
Quick Answer
To repel sawflies naturally, plant strong-smelling herbs like mint and sage, and companion plants like marigolds and nasturtiums near vulnerable crops.
Why Sawflies Are a Problem
Sawflies are a common garden pest in the UK, especially during the warmer months from late spring to early autumn. They lay eggs on plant leaves, and their larvae can quickly skeletonise leaves, leading to weak and unsightly plants.
Planting Natural Deterrents
Herbs That Help Repel Sawfly
Some herbs are particularly effective at deterring sawflies due to their strong scents. Mint and sage are excellent choices. They not only repel sawflies but also attract beneficial insects like bees.
- Mint: Plant in pots to prevent it from spreading uncontrollably.
- Sage: Ideal for borders and thrives in well-drained soil.
Companion Plants for Defence
Companion planting can serve as a natural barrier against sawflies. Marigolds and nasturtiums are particularly effective. They release scents that sawflies dislike and can also attract beneficial insects that prey on pests.
- Marigolds: Plant around the perimeter of your garden.
- Nasturtiums: Great for planting near fruit trees and shrubs.
Timing Your Planting
Timing is crucial when it comes to repelling sawflies with plants. To maximise effectiveness, plant your deterrents in early spring, giving them time to establish before sawfly activity peaks.
| Month | Activity | Notes |
|---|---|---|
| March | Plant mint and sage | Ensure soil is well-drained |
| April | Sow marigolds and nasturtiums | Start indoors if frosty |
Maintaining Your Natural Deterrents
Regular maintenance is key to ensuring these plants remain effective. Water them adequately, especially during dry spells, and prune them to encourage healthy growth.
FAQs
Can I use essential oils to repel sawflies?
Essential oils such as neem or eucalyptus can be diluted and sprayed on plants as an additional deterrent.
Are there any other benefits to using these plants?
Yes, many of these plants attract pollinators and other beneficial insects to your garden.
What if the sawflies have already infested my plants?
Consider manually removing larvae and using insecticidal soap as a safe control method.