Spring brings pests and diseases. Before chemicals, check growing conditions—healthy, vigorous plants resist better.
If good care isn't enough, identify the problem and choose the least-toxic control from the chart below. Give it time to work before escalating.
Ladybugs, green lacewings control aphids, scales. Plant long-blooming annuals/perennials: coreopsis, corn cockle, cosmos, sweet alyssum, yarrow. Avoid indiscriminate spraying. Can also order beneficials from Harmony Farm Supply, Natural Pest Controls, Peaceful Valley Farm Supply.
| Pest/Disease | Commercial Product | Home Remedy |
|---|---|---|
| Aphids, Mites, Scales, Whiteflies | Insecticidal soap (Safer), horticultural oil | ½ tsp mild dish soap + 1 tsp cooking oil in 1 qt water |
| Slugs, Snails | Iron phosphate (Sluggo, Escar-Go!, Worry Free), copper barrier | Handpick at night; apply coarse sand |
| Ants | Citrus spray (Orange Guard, Bugs 'R' Gone), boric acid baits, sticky barrier (Tanglefoot) | Caulk entry cracks; wipe trails with soap/water |
| Powdery mildew, black spot, rust | Lime sulfur (calcium polysulfide)—powdery mildew, rust | 1 tsp baking soda + 1 tsp horticultural oil in 1 gal water—black spot, powdery mildew |
Petunia Pests: Caterpillars, Aphids, and Control Options
Gray Mold on Potting Soil: Harmless or Harmful?
Colorado Potato Beetles on Eggplant: Spinosad or Hand-Picking for Control
Red Beetles on Roma Tomatoes: Organic Controls
Organic Control for Geranium Budworms and Slugs
Pepper Plants Stalling in Containers: Heat, Water, and Soil Fixes
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