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Four o'clock flower · Mirabilis jalapa

Why are my Four o'clock plant's leaf tips turning brown?

It is less common for this plant to have brown tips, which usually happens when the soil dries out too much or the air is too dry. Check your watering schedule first to see if the soil is staying dry for too long.

Check these first

  1. Check the soil moisture with your finger.
  2. Look for signs of wilting on the leaves.
  3. Assess the current humidity levels in your room.

Likely causes

  1. Underwatering

    Most likely

    How to tell: The soil feels completely dry and the leaves may look slightly wilted or crispy at the edges.

    What to do: Water your plant thoroughly until water drains from the bottom of the pot. Aim to water every 3 to 7 days whenever the top inch of soil feels dry.

  2. Low Humidity

    Possible

    How to tell: The tips turn brown and brittle even though the soil is moist.

    What to do: Move your plant to a spot with better air circulation. You can also place a tray of pebbles and water near the base to increase local moisture.

Find out what's wrong with your four o'clock flower

The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

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When to worry

Worry if the browning spreads rapidly to the rest of the leaf. A few crispy tips on older leaves are normal as the plant grows.

Stopping it coming back

Keep a consistent watering schedule and avoid letting the soil dry out completely for extended periods.

Keep your four o'clock flower healthy from here

Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked. Identification and a health check are free.

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Questions people ask

Should I trim the brown tips off?
Yes, you can trim them with clean scissors for aesthetic reasons. Just be careful not to cut into the healthy green tissue.
Does tap water cause brown tips?
Sometimes the minerals in tap water can build up. If you suspect this, try using filtered water for a few weeks.

More problems with Four o'clock flower

Back to the Four o'clock flower guide

This article was generated with AI from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.