Pansy Pests in Greenhouse: Flea Beetles or Fungus Gnats?

900 pansies in Oregon greenhouse. Small leaf holes, tiny black flies when watering.

Diagnosis

Flea beetles: Chew holes. Black bugs jumping.
Fungus gnats: Flies from soil. Larvae eat roots. Holes may be separate issue.

Isolate damaged plants (done).
Yellow sticky cards for flying adults.
Spinosad in water: controls fungus gnat larvae, may help flea beetles (off-label).
Spinosad = organic, broader than Bt.

Monitor with sticky cards. Treat soil for gnats, foliage for beetles.

Annuals: Small Flying Black Bugs from Infested Dog Food: Dermestid Beetles; Tiny Hard-Shelled Black Bugs in House: Carpet Beetles; Fungus Gnats in Houseplants: Sticky Traps, Drier Soil, and Nematodes; Dealing with Flying Black Bugs in Your Pantry: Identification and Control; Willow Flea Beetles: Managing Black Beetles on Weeping Willow; Black Bugs on Outdoor Ponytail Palm: Local Pest Issue; Eliminating Fungus Gnats from Wandering Jew Plants; Identifying and Controlling Pests on Petunias and Pansies; Identifying Tiny Black Jumping Bugs Causing Allergic Reactions; Tiny Black Bugs in Pond: Identification & Risk Assessment

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