Spider mites (Tetranychidae) are common pests of many outdoor crops including berries, ornamentals, vines, many fruit trees, hemp and cannabis. There are many subspecies of spider mites in the Tetranychus genus including the Pacific Spider Mite, Two-Spotted Spider Mite and Strawberry Spider Mite. Some species are more easily identified than others; however, it is generally unnecessary to do so as their biology, damage, and control measures are similar or the same.
Identification & Life Cycle: Spider mite populations can grow rapidly under the right conditions (warm with little wind is their favorite) and can be identified by the telltale webbing they produce on plant leaves. Unfortunately, by the time you see webbing, it may be difficult to control the population. Spider mites undergo five life stages – egg, larva, two nymph stages and the adult stage.
- Eggs – Overwinter under bark, in fallen leaf matter, and other areas that provide shelter. During the growing season they can be found on the undersides of leaves. They usually hatch within three days.
- Larva – Begin hatching after the last frost has passed and have six legs. Little feeding is done by this stage.
- Nymph – Looks similar to the adult, but slightly smaller and unable to reproduce. There are two nymph stages: proto-nymph and deuto-nymph.
- Adult – About 0.4 mm long with eight legs, adult spider mites can be pale yellow to green or orange to brown. Females lay between 50-100 eggs throughout their lives with unfertilized eggs hatching as males and fertilized eggs hatching as females.
The duration of a spider mite’s life cycle varies greatly depending on environmental conditions with temperature being the chief contributor to that variability. Due to that, they are most active outdoors during the summer months. A generation can be completed in under a week if conditions are favorable.
Knockdown & Chemical Control – Existing spider mite populations should be treated with organic knockdown sprays if allowed. Naturally derived miticidal sprays like neem oil,pyrethrins, azadirachtin & horticulture oilcan be sprayed directly onto adult mites, larvae, nymphs and eggs to kill on contact. Apply to active spider mite infestations at 3-day intervals until control is achieved. Horticultural oils can also be applied to overwintering sites to reduce egg populations. Exercise caution when applying oil-based sprays to plant in high temperatures (>80°) or intense lighting. Miticides should be used as a last resort in the flowering period of growth. Utilize biological control methods instead (see below).
Biological Control – Ideal for spider mite control during flowering. Introduce beneficial insects after knocking down spider mites for continued control. Match your growing conditions with themite predators optimal conditions and time releases in conjunction with other integrated pest management approaches.
Below are Preventative and Control Products we carry in store.
Ladybugs are general predators that eat many slow-moving and soft bodied insects. Including; Aphids, Moth eggs, Mites, Scales, Thrips, Leaf Hoppers, Mealybugs, Chinch Bugs, Asparagus Beetle larvae, Whitefly and other soft and slow-moving insects. Ladybugs are a must-have for organic gardening or organic farming. Ladybug eat insects during both the adult and larval stages, so you can buy ladybugs as adults and continue to have live ladybugs eating through other parts of their life cycle as they reproduce.
The Amazing Doctor Zymes Eliminator is a revolutionary green solution that kills and eliminates soft bodied insects, molds and mildews on your indoor or outdoor gardens. Eliminator is a proprietary formula, hand crafted to ensure quality control. Professional Growers use it all year to ensure pest free, mildew free plants. The Amazing Doctor Zymes Eliminator can be used preventively or to eliminate active infestations.
86 Mites & Mold is a natural oil based broad spectrum pesticide which eliminates a wide range of insects including spider mites, aphids thrips, broad mites, russet mites, whiteflies, grubs, many kinds of ants, etc. Spider mites die on contact. Eggs are suffocated within 12-24 hours. Apply as a treatment or as a preventive every 2-3 days or as required.
FoxFarm Bush Doctor Force of Nature Miticide is specially formulated for the control of mites, thrips and other insects on different types of crops. It is effective in controlling most spider mites and insects pests on contact for 3 to 4 weeks with 1% spray solution. It is a great addition to a well-defined Integrated Pest Management (IPM) program to ensure efficient prevention and control. It is made of natural ingredients so it is guaranteed safe to use around human and animals.
There is no other product like it! It is a true breakthrough in the science of zero residue multi-purpose pesticides. Kills broad mites, spider mites, thrips, white fly, powdery mildew and more. Apply on the day of harvest to buds and blooms. Reduces mold and mildew in the drying process. Will not slow plant growth like other products. Meets state requirements for zero pesticide residues. It’s unique OMRI listed formula is comprised of 100% food grade ingredients.
Spray Green Cleaner on plants of every age, from clones through harvest. Unlike other products, spider mites do not get immune to Green Cleaner. Kills mites and their eggs. Washes powdery mildew right off the plant. All natural, you can even use Green Cleaner on the day of harvest. Green Cleaner is a concentrate that makes 2 oz 1 – 4 gallons, 4 oz 2 – 8 gallons, 8 oz 4 – 16 gallons, 32 oz 16 – 64 gallons and 128 oz 64 – 256 gallons.
AzaMax is a natural product with a broad spectrum of pest control. It contains Azadirachtin A & B as active ingredients and more than 100 limonoids. AzaMax does not use hard chemical solvents and fully uses food grade formulation ingredients. It is an antifeedant and insect growth regulator which controls pests through starvation and growth disruption. Effectively controls spider mites, thrips, fungus gnats, aphids, whiteflies, leaf miners, worms, beetles, leafhoppers, scales, mealy bugs, nematodes and other soil borne pests.
Safe, non-toxic pest and fungal control for healthier plants through the power of colloidal micelles. Use Trifecta Crop Control for treating and preventing problem mites, aphids, thrips, whiteflies, as well as botrytis, fusarium and downy and powdery mildew. Healthy medicine for healthy living. Make sure your plants test clean. Crop control is made from all food safe ingredients. Foliar spray shows no residual within 48 hours of application. This product may be used on crops intended for human consumption.
The standard by which all other Plant Washes are compared. Mighty Wash cleans plants leaving them vibrant and healthy the way they were meant to be in nature. Clean, healthy plants thrive indoors just as they have for the millions of years they evolved outdoors, where they utilized all the elements of nature including the frequencies of light, color and sounds. Wash your plants with Mighty Wash by giving them a thorough saturating spray to both the top and bottom of the leaves. Mighty Wash can be used throughout your plants entire growing and flowering cycle, up to and including the day of harvest.
Doktor Doom Total Release Foggers are for use in greenhouses, fruit and vegetable storage areas and indoor gardening areas. Used for controlling fungus gnats, spider mites, two-spotted spider mites, aphids, whiteflies, scale, mealy bugs and thrips. No residuals. The active ingredient, pyrethrin, is derived from chrysanthemums and proven to successfully control spider mites, aphids, whiteflies, fungus gnats, and more.