Solving Spider Mites in Indoor Vegetables

Sep 01, 2025

Spider mites don’t need much space to cause big problems. Early detection is key. In indoor vegetable production—whether you're growing leafy greens, cucumbers, peppers, herbs, or other crops—spider mites often hide on the undersides of leaves and in stem folds. These tight, protected areas are difficult to reach with sprays, allowing pressure to build unnoticed.

Sticky cards placed near vents, row ends, or fan intakes can help catch early movement—mites often ride air currents and settle in these overlooked zones. If you’re seeing speckled leaves or fine webbing, bottle formulations of beneficials like Spidex and Spical are a great place to start. These predatory mites feed on all life stages and can reach into the crevices where spider mites live.

Once pressure is reduced—or if you're currently managing the problem with a spray—preventative sachets can be utilized to help clean up and protect against future pressure. For trellised crops or dense canopy zones, tuck sachets into leaf axils or tie them to support structures where they’ll stay shaded and undisturbed.

Isarid is a mycoinsecticide that can help bridge the gap between spraying and introducing beneficials. It’s compatible with biocontrols and supports a smoother transition.

Want to learn more about how to solve spider mites? Check out our article Solving Spider Mites for identification tips, treatment strategies, and biocontrol recommendations—all in one place.

Some chemicals negate the effects of beneficial controls. If you’re navigating the shift from chemical to biological control, we’re here to help—just reach out to us at orders@koppert.com or simply message our live agents through the chat box in the bottom right hand corner of the screen.

Treating a large space and looking for expert advice on IPM strategy? Just fill out our contact us form Personal Service Inquiry | Natural Enemies  and we’ll reach out with tailored support to help you build a plan that works.