Organophosphates - Pests it Manages, Pros & Cons, How to Use

Organophosphates are a group of strong synthetic insecticides (like maldison and dimethoate) that were once common in home gardens. They're broad and powerful — and we don't recommend them for a food garden.

What they're used against: a wide range of insects — aphids, caterpillars, beetles, fruit fly and more — but in a backyard patch the collateral damage isn't worth it.

Why we steer clear:

• Toxic to people and pets, and can leave residues on the very vegetables you're growing to eat.
• They kill the good bugs too — bees, ladybirds and lacewings.
• They can persist in soil and water.

Safer alternatives we'd use instead:

• Encourage beneficial insects like ladybirds and lacewings.
• Insecticidal soap or neem oil for soft-bodied pests.
• Bt for caterpillars.
• Physical barriers and netting.

For a home veggie garden there's almost always a gentler tool that does the job. For the bigger picture, see our guide to managing pests safely.

Plan your patch: our free planting calendar shows what to plant now where you live. Ready to grow? Browse our raised garden beds or build your own with the garden bed builder.

Image: Charles O'Rear, public domain, via Wikimedia Commons.