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Why does my plant have brown leaves?

Even the most attentive plant parent will sometimes notice brown leaf tips or leaf edges on their houseplants. Find out what causes them and how to stop them.

Close-up of a houseplant leaf with brown edges

Nobody wants a crispy plant and no plant wants to be crispy, but dry leaves happen. They’re usually just unattractive and nothing to worry about, but if you want to get your plants looking fresh and green again, here are some likely causes and ways to fix them.

A lack of humidity

Most indoor plants originate from tropical environments, so they like a humid atmosphere. Dry air, especially in rooms with central heating, can make their edges a little crispy. Make the air more humid by introducing a humidifier, by topdressing the surface of your plant's compost with a layer of LECA balls (lightweight expanded clay aggregate), or misting your plants several times a week. Just a light spray will do. Even better, put them in a kitchen or bathroom where it’s naturally steamy.

Close-up of a palm leaf with dry brown leaf tips

Not enough water

If we get thirsty, our skin gets dry. If a plant gets thirsty, its leaves get dry. If your plant is looking crispy all over, it probably needs a drink. To be sure, put a finger in the soil. If it’s dry to a depth of two inches it’s definitely time for water.

Too much sun

If the edges look burnt, rather than just dry, they may me in a spot that’s too sunny. Most indoor plants don’t like to sit in direct sunlight for long periods as it scorches their leaves. Try moving your plant somewhere slightly further from the window.

Close up of a philodendron with sun-burn like brown spots

Age

Sometimes your plant can be completely happy and healthy but still have some dry leaves, simply because those leaves have reached the end of their life. Old leaves are usually at the bottom of the plant or furthest from the middle. They dry out as they die off to make room for new growth. You can just snip these old leaves off.

In short, to keep your plant’s leaves green and healthy, follow these rules:

  • Mist it several times a week to keep the air humid
  • Water it whenever the top two inches of soil feel dry
  • Try to keep it out of direct sunlight
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