Why are my Monstera leaves turning brown?

Monstera leaves usually turn brown when they lose water faster than the roots can supply it, most often from underwatering or low humidity, which dries the edges into crispy brown margins. Root rot from chronic overwatering, harsh direct sun, fertilizer salt buildup, and cold drafts can also brown the leaves. First check whether the brown is dry and crispy or soft and dark, then adjust watering to match.

Most likely cause

The most common cause of brown Monstera leaves is the leaf transpiring faster than the roots can keep up, driven by underwatering and dry indoor air. Monsteras come from humid rainforests, so when the soil dries out too long or the air is very dry, the thin leaf edges dehydrate and die back into crispy brown margins.

You can confirm it by feel and pattern. Underwatering browning is dry and crisp, starts at the edges and tips, and the soil is bone dry, sometimes pulled away from the pot. If a humidity reading sits below 40 percent it makes this far more likely. Water thoroughly, raise humidity toward 50 to 60 percent, and the new growth should come in clean.

Other causes

These rank below dryness but each leaves a distinct mark.

Root rot from overwatering. The opposite extreme; browning is soft, dark and mushy rather than crispy, the soil stays wet, and the base may smell sour.
Too much direct sun. Harsh rays scorch the leaf; look for dry, bleached or brown patches on the side facing the window.
Fertilizer or salt buildup. Excess feed burns the tips brown and may leave a white crust on the soil surface, often soon after feeding.
Cold drafts or temperature swings. Exposure to a chilly window, an AC vent, or a heat source browns patches and edges, sometimes with a darkened, water-soaked look.

How to fix it

Diagnose the brown. Pinch the brown tissue; crispy means too dry, soft and dark means too wet. Let this guide everything below.
Water consistently. Soak until water drains from the bottom, then water again only when the top 1 to 2 inches are dry.
Raise humidity. Aim for 50 to 60 percent with a humidifier or a pebble tray, especially in heated or air-conditioned rooms.
Adjust the light. Move it out of direct sun into bright indirect light, acclimating it to any brighter spot over a week.
Flush the soil. If you suspect salt buildup, run water through the pot several times to leach out excess fertilizer, then ease off feeding.
Shelter from extremes. Keep it away from cold drafts, AC vents, radiators, and single-pane winter windows.
Trim and inspect. Cut off dead brown tissue with clean shears, and if browning is soft, unpot and trim any mushy roots before repotting.

Cause	Tell-tale sign	Fix
Underwatering / low humidity	Dry, crispy brown edges	Water consistently, raise humidity
Root rot	Soft, dark, mushy brown areas	Dry out, trim roots, repot
Direct sun	Bleached patches facing window	Move to bright indirect light
Salt buildup	Burned tips, white soil crust	Flush soil, feed less
Cold drafts	Patchy, water-soaked browning	Keep away from vents and drafts

Frequently asked questions

Why are the edges of my Monstera leaves turning brown and crispy?

Crispy brown edges almost always mean the leaf is losing water faster than the roots can supply it, from underwatering, low humidity, or a salt buildup in the soil. Water more consistently, raise humidity toward 50 to 60 percent, and flush the soil to clear excess fertilizer salts.

Should I cut the brown parts off my Monstera leaves?

Yes. Trim the brown, dead tissue with clean shears, following the leaf's natural shape and leaving a thin margin of brown so you do not cut into healthy green. Brown areas will not recover, but removing them tidies the plant; fix the cause so new browning stops.

Why are my Monstera leaves turning brown and soft instead of crispy?

Soft, dark brown or mushy areas usually mean overwatering and root rot, not dryness. The roots are failing and the leaf tissue is collapsing. Check the roots, cut away any mushy ones, repot in fresh chunky mix, and let the soil dry more between waterings.

Can too much sun cause brown Monstera leaves?

Yes. Harsh direct sun scorches Monstera leaves, leaving dry, bleached or brown patches on the areas facing the window. Move the plant out of direct rays into bright indirect light, and introduce it to any brighter spot gradually to avoid shocking it.

Why does my Monstera get brown spots after fertilizing?

Brown spots or burned tips soon after feeding point to over-fertilizing or salt buildup in the soil. The excess salts pull water from the roots and scorch the foliage. Flush the pot with plenty of water, then feed at half strength or less and less often.

How do I stop my Monstera leaves from turning brown?

Water consistently when the top 1 to 2 inches dry, keep humidity around 50 to 60 percent, place it in bright indirect light away from heat vents and cold drafts, and avoid over-fertilizing. Stable, moderate conditions prevent most browning.