White Rice-Like Spots on Gardenia: Likely Scale Insects

Bringing a gardenia indoors for winter often brings hitchhiking pests. White, rice-grain structures on all leaves strongly suggest scale insects (possibly cottony cushion scale or whitefly nymphs).

Immediate Steps

1. Confirm ID: Take a few leaves to a local nursery or send a sharp close-up photo to an expert.
2. If scale: Treat with horticultural oil or insecticidal soap (e.g., Safer Brand) outdoors before bringing inside.
3. Systemic option: Bayer Tree & Shrub Insect Control (imidacloprid) as a soil drench—apply outdoors, wait per label, then move in.

Why Not Guess?

Misidentification wastes money and may harm the plant. Many pests look similar. A $10 nursery visit saves $50 in wrong products.

Indoor Care

Once treated, place in bright light, keep soil evenly moist (not soggy), and monitor weekly. Quarantine from other houseplants for a month.