Looking for aphid solutions in the greenhouse

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Post by Guest »

Last year my lemon tree was covered and neem oil didn’t help even with the multiple application.

I couldn’t control the pepper bugs, either.

Thank you.

Post by Owensboro »

Depending on how bad your infestation is ypu will need a multistage attack plan.

You can try spraying them off with a jet setting on your water hose. This will physically remove some. Pruning branches and clearing out dead decaying debris where they hide.

Based on their life cycle you have to repeat spraying, cleanup and possibly insecticides. This depends on what you might be growing to eat. Following the guidelines on any chemicals so you want the proper time to ingest after application.

Neem oil is only affective if you apply weekly for several weeks on end. Even then I seemed to struggle with bugs using Neem oil.

I would recommend Bifenthrin as an insecticide to anyone. It works really well. Bifenthrin is used by lawn companies as their professional spray to control mosquitos. It works very well on all bugs, including bees, so spray responsibility. Bifenthrin is safe to humans and pets after it dries and is used inside homes for spiders and coackroches. Bifenthrin when placed on our plants acts just like the floor is lava. Killing insects that contact it for up to 4 or 6 weeks depending on rain fall.

Post by Dianne »

Planting nasturtiums is a great trap plant. This means pests are drawn to it and therefore pulled away from more fragile plants. If you don't want aphids to attack other crops, then plant these easy-to-grow annuals.

Post by Rustin »

A drop of dish soap, a few drops of tea tree oil in water sprayer works wonders for me. Although on sunny days you can burn your foliage so I tend to shade the infestation or treat on cloudy days.

Post by Shawna »

Spray soapy water all over the plant be sure to get under the leaf do this for 3 to 4 days straight then every other day for 10 days.

Post by Maggie »

You can't solve the issue 100% without using massive amounts of deadly poison.

And even then, you might not succeed, unless you choose chemicals not at all safe to be around.

If you are willing to just "manage" the problem, start with biologicals (predators). They won't "solve" the problem, but they can slow them down enough that some plants will do okay.

If you can't get ladybugs or lacewings etc., use ALL the home remedies you can find, or "organic" solutions (like NEEM and horticultural soaps) regularly, on a rotation. Don't stop treating your plants, or the aphid population will explode again.

Be aware that some of your plants won't tolerate the regular treatments, and you will lose them anyway.

As someone else mentioned, sometimes you just have to empty the greenhouse and start over.

Post by Dan »

Dust generously with DE.

Post by Pam »

Throw everything out and start over. Advice someone gave me years ago. I know I have spent more than one full winter fighting them with every known thing to man, even some more exotic things (like Lemon), they still came back, not matter what I did.

Post by Debora »

I initially use a hose water spray & remove damaged & dead leaves on or around the plant. Then i mix in a spray bottle, 2 cups water, 1 cup rubbing alcohol & a squirt of dish soap shake well. Spray the leaves (not in the sun). I've let it set 15 mins to an hr then spray with fresh water. Repeat as needed for the next couple days. Then (or in between-I’m impatient lol) use a q-tip dipped with the mixture to remove the remaining ones & watch the stem, they climb back up. I’ve had great success with this method I found on the web.
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