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Western Flower Thrips Resistance: No Resistant Annuals, Try Systemics & Predators

25-year gardener, Zone 5 shady yard. 12 flats, 6 windowboxes, combo pots. Thrips (Western Flower Thrips + viruses) destroy everything in 2 weeks. Malathion, Orthene, Spinosad fail—resistance develops fast. Blue sticky cards trap adults.

Options

Systemic: Bayer Tree & Shrub (imidacloprid/Merit) + Spinosad rotation.
Predatory insects: Amblyseius cucumeris, Orius spp. (sources: Biobest). Can't use sticky cards or insecticides with predators.
New soil annually: In containers/boxes.
Year without flowers: Break cycle. Buy 3 bouquets/week for sanity.

Reality

No shade annual is thrips-resistant. Light-colored flowers attract more. IPM + sanitation + rotation is only path.

Annuals: Saving Flower Seeds: Hybrid vs. Open-Pollinated; Unusual Annuals for All-Sun Window Boxes: Beyond the Six-Pack; Designing a Flower Garden: Beds, Colors, and Creative Containers; Anthurium (Flamingo Flower): Care, Varieties & Growing Secrets; Parrot Flower (Impatiens psittacina): The Rare "Flying Cockatoo" Bloom; Tuberose (Polianthes tuberosa): Growing the Queen of Fragrance; Creative Flower Girl Ideas: Beyond the Petal Basket; Birth Flowers by Month: Meanings, History, and Gift Ideas; Blanket Flower (Gaillardia): Long-Blooming, Butterfly-Friendly Color; Dahlia Care: From Tuber to Towering Blooms

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