Spider mites: tiny webs, big problem.

Microscopic arachnids that thrive in dry indoor air.

How to treat

1. Move the plant away from others.
2. Shower thoroughly — both sides of every leaf.
3. Apply insecticidal soap weekly for 3 weeks.
4. Raise humidity above 50% to break the cycle.

How to confirm spider mites

Spider mites are tiny, so look for damage as much as the pest itself. Leaves may look dusty, speckled, faded, or slightly bronzed. Fine webbing often appears on undersides, along leaf edges, or between stems.

Hold a white sheet of paper under a leaf and tap the leaf gently. Tiny moving specks on the paper are a strong clue.

Why one spray is not enough

Spider mites reproduce quickly in warm dry rooms. A single rinse removes many adults, but eggs and missed mites can restart the infestation. Repeat treatment every 5-7 days for three to four rounds, checking the newest leaves each time.

Leaf washing routine

Use lukewarm water and support the pot so soil does not wash everywhere. Rinse the undersides first, then the tops. After the shower, let the plant drain fully and dry in bright indirect light. Do not leave wet leaves in a cold dark room.

Improve the room conditions

Dry dusty leaves help mites. Clean leaves monthly, keep humidity moderate, and move the plant away from hot vents or very dry windowsills. Humidity alone will not cure an infestation, but it makes the environment less favorable while treatments do the work.

When to prune

Remove leaves that are heavily stippled, webbed, or collapsing. Keep lightly damaged green leaves because they still feed the plant. If the infestation is severe, pruning the worst leaves helps treatments reach the crown and remaining foliage.

When the plant is clear

Keep it isolated until you see no mites, no fresh webbing, and no new stippling for at least two weeks. Continue checking nearby plants because mites often spread before they are noticed.

A simple treatment calendar

1. Day 1: isolate and rinse the plant thoroughly.
2. Day 2: apply insecticidal soap after leaves are dry, following the label.
3. Day 7: rinse or wipe again and repeat treatment.
4. Day 14: repeat treatment and inspect new leaves.
5. Day 21: treat again if any webbing or stippling is fresh.

What not to use indoors

Do not use outdoor-only pesticides in a living space. Do not mix household cleaners into sprays. Peace lily leaves can be sensitive, so test any labeled product on one leaf if you are unsure and keep the plant out of direct light while it dries.

Recovery signs

Stippled leaves do not become glossy again, but new leaves should open greener and cleaner. Less webbing, fewer moving specks, and no new curled growth are the signs that the mite population is dropping.

Common treatment mistakes

• Spraying once and assuming the eggs are gone.
• Missing the undersides of leaves.
• Keeping the plant beside a hot dry vent during treatment.
• Ignoring nearby plants that may already have early mites.

Helping the plant recover

Once mites are controlled, rinse residue from leaves and keep humidity moderate. Avoid strong fertilizer until new leaves look normal. If the plant lost many leaves, focus on stable light and watering while it rebuilds.

Keep checking during dry winter weather, when mites are most likely to return.

A monthly leaf rinse is one of the simplest prevention habits for a peace lily kept in a warm dry room.

Clean, hydrated new growth is the recovery signal.

If new webbing appears, restart the treatment calendar immediately.

Do not wait for heavy webs; early treatment is far easier.

Use a bright light during checks so tiny movement is easier to see clearly early.