Pests

Spider mites

Also called: two-spotted mite, red spider mite

Tiny sap-suckers that stipple leaves pale and spin fine webbing in dry, warm rooms.

What you'd see

Fine pale speckling (stippling) on the upper leaf, like someone dusted it with flour
Leaves take on a dull, bronzed or greyish look before yellowing
Very fine webbing in leaf axils and along the undersides, especially at growing tips
Tap a leaf over white paper: dust that walks

Where to look

Undersides of leaves first, then whole plants. Worst near heaters and radiators.

How it spreads

Fast in dry air — a population can double in under a week at 27 °C (80 °F). Travels on hands, clothes and touching leaves.

Is it really this? Look-alikes

Thrips — Thrips leave silvery streaks with black specks of frass; mite damage is even speckling with webbing.
Dry-air scorch — Crisping edges without stippling or moving dust points to humidity, not mites.

What's going on

Spider mites are not insects but arachnids, smaller than a full stop. They pierce individual leaf cells and drain them, which is why the damage reads as a thousand tiny pale dots rather than a hole.

They thrive when air is dry and warm and hate being wet, which is why they explode indoors in winter when heating is on and plants are rarely rinsed.

Why?

Understanding that mites love dry stillness tells you the counter-move: moisture and movement. Every remedy that works either drowns them, dries them out with soap or oil, or knocks their numbers down often enough that they cannot rebuild.

Grandmother's remedies

What people have always done — with an honest note on each.

The shower rinse
Take the plant to the shower or sink and rinse every leaf, top and underside, with lukewarm water. Repeat every 3 days for two weeks.
Verdict: Genuinely effective for small plants — physical removal is the backbone of every good mite programme.
Soapy water wipe
A teaspoon of plain liquid soap in a litre of water, wiped leaf by leaf with a soft cloth.
Verdict: Works on contact only; you must reach every underside, and it needs repeating.
Raising humidity with a pebble tray
Set the pot on pebbles in a tray of water so the base never sits in it.
Verdict: Helps slow them; will not clear an infestation on its own.

Modern remedies

What growers and extension services reach for today.

Insecticidal soap or horticultural oil
Spray to run-off, covering undersides, every 5–7 days for three rounds. Test a leaf first.
Verdict: Reliable when coverage is thorough; misses hidden mites and eggs, hence the repeats.
Predatory mites (Phytoseiulus persimilis)
Ordered live and released onto the plant; they eat spider mites and starve out afterwards.
Verdict: Excellent for collections and greenhouses, overkill for one pothos.
Neem oil
Cold-pressed neem diluted per the label, sprayed in the evening, away from direct light.
Verdict: Moderately effective as a repellent and smotherer; do not rely on it alone for a heavy case.

Honest verdict

No single treatment clears spider mites in one go. What works is thorough coverage repeated three or four times a week apart, because eggs keep hatching. Broad-spectrum sprays often make things worse by killing the mites' natural enemies.

Prevention

Quarantine new plants for two weeks
Rinse leaves monthly, especially in heating season
Keep plants away from hot dry air currents
Check undersides when you water — the habit is the cure

Plants this commonly troubles

Monstera Pothos Fiddle-leaf fig Philodendron