Best companion plant that fights spider mites?

keith1975

Well-Known Member
I heard dill is a good option. But:
1. Is dill the best option?
2. How much would you need to grow before it becomes beneficial?
3. Is there not perhaps a sort of a “dill spray” that can be used instead?

Also, if the companion can also fight white flies, that would be great.
 
Coriander is supposed to repel spider mites (and aphids). Chrysanthemums and marigolds (amount seems to vary depending on type) produce pyrethrin, although IDK whether this would directly help nearby plants. In other words, IDK if they release the substance, or if you'd have to actually process the plant material and make a spray (which isn't what you're looking for).

I thought onions might work for this - they do a fairly good job at repelling rabbits, lol, as long as you plant them in a border spaced closely together and the rabbit isn't starving - but I just did a quick web-search for onion and spider mite, and it turns out that they can get infested with the SOBs, too.

If you find information somewhere else, please post it.
 
Could be big coincidence but I had a rosemary in my grow for awhile n never had mites. She outgrew her pot, dried to fast n I killed her. Not long afterwords I got mites. Treated my veg plants n clones a few times, got 2 rosemary bushes, never treated again and haven't had mites in years.

And it smells amazing!
 
Could be big coincidence but I had a rosemary in my grow for awhile n never had mites. She outgrew her pot, dried to fast n I killed her. Not long afterwords I got mites. Treated my veg plants n clones a few times, got 2 rosemary bushes, never treated again and haven't had mites in years.

And it smells amazing!

I had basil in my room and feels like after i took them out, everything went to hell. Going to add rosemary as you suggested, and maybe one other plant.
 
Could be big coincidence but I had a rosemary in my grow for awhile n never had mites. She outgrew her pot, dried to fast n I killed her. Not long afterwords I got mites. Treated my veg plants n clones a few times, got 2 rosemary bushes, never treated again and haven't had mites in years.

And it smells amazing!

What's weird is that rosemary isn't on this list of repelling plants: List of pest-repelling plants - Wikipedia
And also, people have had rosemary plants infested with spider mites: Spider mites on rosemary! - Ask an Expert

Based on the above page, coriander and dill seems to be the way to go. But I also read that people mix rosemary with water to treat other plants. So I dunno. Thinking of getting 1 of each, but that's going to give me space issues. Ideally I want one companion plant per 1.2 x 1.2 area. So I need a plant that is good at getting rid of spiter mites and hopefully white flies.

I'm going to try rosemary and see how that goes.
 
Look up ground cinnamon or cinnamon sticks or cinnamon oil...natural and bugs hate it...I don't know about the cinnamon tree in your garden...lol...but cinnamon sticks, and ground cinnamon work fine...
On Google...
Just apply cinnamon powder to the stem before you plant the cutting. Ants do not like cinnamon! Sprinkle cinnamon in your greenhouse or around your garden beds to deter garden pests. It will not kill the ants, but they will stay away from it...
Use Cinnamon Sticks as a Natural Insect Repellent. Insects don't like the smell of cinnamon (silly little bugs). Plus they don't like the feel of powdered cinnamon. Grate a cinnamon stick then sprinkle it around any place (inside or outside) you're trying to get rid of ants or other annoying bugs.
 
Could be big coincidence but I had a rosemary in my grow for awhile n never had mites. She outgrew her pot, dried to fast n I killed her. Not long afterwords I got mites. Treated my veg plants n clones a few times, got 2 rosemary bushes, never treated again and haven't had mites in years.

And it smells amazing!
Have you tried mint? It works similarly
Sunflowers, mint, and aster families (coneflowers, daisies, corepsis, yarrow) of plants attract predatory wasps and parasitoidflies such as hover flies. Hover flies (or syrphid flies) are one of only a few insects known to feed primarily upon nectar and digest pollen but will also feed on the honeydew of aphids.
 
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