Hey everyone! I'm having a tough time tackling an aphid invasion in my raised garden bed where I've got eggplant, kale, and tomatoes growing. Recently, I brought in some ladybugs and even set up a couple of ladybug 'hotels' plus a water station and lots of brush for them to hide. I kept the ladybugs in the fridge before releasing them over three nights, and misted the plants beforehand, but every morning, they seem to have vanished. I've even placed some directly on the infested leaves, hoping they'd munch on the aphids, but they just flew away! I'm worried about using strong treatments since my plants are still young and delicate. I've tried removing the aphids by hand, but there are just too many now. I'm really looking for effective, safe advice to handle this situation. Any suggestions?
5 Answers
Here’s a helpful picture of what my plants looked like before treatment, for reference. Sometimes visuals can help identify what to look for!
Additionally, if you have any dying leaves, cut those off and bag them to prevent spreading. After it rains, sprinkle some diatomaceous earth on the undersides because it can help deter the aphids. And for watering, consider watering from the bottom rather than soaking the soil directly to protect those delicate stems.
Try using Spinosad soap; it's effective against aphids and safer for your plants. Just spray it on the affected areas, and it should help keep the infestation down without harming your plants too much.
It sounds like you’re really trying hard to manage this, but if the ladybugs aren’t sticking around, you might need a different tactic. I work at a local gardening store, and one thing you could try is using malathion mixed with water for a spray. Just be aware it can kill beneficial insects too, so if you're leaning organic, consider neem oil instead!
Malathion is pretty strong and not selective; it can wipe out the good bugs as well. I’d suggest starting with soapy water spray instead. Just be gentle and hold the plant to spray.
If you stick with organics, I'd recommend a combination of neem oil and Spinosad soap. They’re safer options. Keep in mind to wash your veggies before eating! I used malathion on my broccoli once for aphids and had no issues eating it, but stick to the minimum recommended dosage.

Do you apply it directly on the leaves? Also, I heard some stuff about malathion being harmful to pollinators. Is it safe to eat the veggies later on?