Spider Plant Problems: Scale Insects and Leaf-Eating Pests

Two Separate Issues

Black removable spots (1/16–1/8"): Likely scale insects. Confirm by taking leaves to a nursery.

Round holes: Different pest—possibly slugs, caterpillars, or beetles.

Scale Treatment

• Timing is key: spray horticultural oil or insecticidal soap when crawlers (mobile nymphs) are active.
• Systemic imidacloprid (soil drench) also works but avoid on edibles.

Finding the Hole-Maker

• Inspect at night with flashlight.
• Check plant base and soil for slugs.
• Squash any found.

Nursery Help

Local nursery staff can ID both pests from samples and recommend specific products for your area.