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Spider Mites on Dwarf Spruce: Kid-Safe Oil Spray

11-year-old. Small dwarf spruce had brown needles at purchase; now all brown needles gone. Internet says spider mites. Can't use chemicals. Help?

Vegetable Oil Spray = Safe Suffocant

Mix 1 tbsp vegetable oil + 1 quart water in spray bottle. Shake well. Spray entire plant (especially undersides) weekly. Oil coats mites → suffocation. Non-toxic, organic.

Also

Hose off plant first to dislodge mites.
Increase humidity (mist daily)—mites hate moisture.
Isolate from other plants.

Great job researching! Persistence wins.

Shrubs: Identifying and Managing Fire Blight on Chanticleer Pear Trees; Blue Spruce Cytospora Canker: Diagnosis and Management; Fall Webworms in Your Tree: Web Removal and When to Spray; Dwarf Orange Tree with Strange Thorny Growth: Rootstock Sucker; Recovering from Horticultural Oil Burn on Colorado Blue Spruce; Dwarf Blue Spruce Topping: Converting Tree to Shrub; Spider Mites on Dwarf Umbrella Tree (Schefflera arboricola); Dwarf Alberta Spruce: Indoor Holiday Plant That Must Go Outside; Caring for a Potted Dwarf Alberta Spruce as a Reusable Christmas Tree; Colorado Globe Dwarf Spruce vs. Standard Dwarf Globe: Understanding the Difference

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