Identifying and Controlling Tiny Black Insects on Alyssum with Organic Sprays

Pest Description

Denver gardener reports tiny, teardrop-shaped black insects with hard shells (wings) that hop and fly. They suck juices from alyssum, causing pale, spotted leaves and bloom loss. Antennae are present. Photos were not received.

Immediate Organic Treatment

Charlotte recommends a homemade garlic-chili spray:

1. Blend 2–3 whole garlic bulbs + 1–2 hot dried chili peppers with 1 quart water until liquefied.
2. Strain through cheesecloth to prevent clogging.
3. Mix 1 cup concentrate per gallon water.
4. Spray thoroughly, including leaf undersides.

This broad-spectrum repellent often eliminates soft-bodied insects quickly.

When to Seek Expert ID

If the spray fails, capture specimens and take them to a local nurseryman or extension office. The description resembles a flea beetle, but the antennae and plant-sucking behavior are atypical. A professional can provide precise identification and targeted advice.