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Herb Robert · Geranium robertianum

Why is my Herb Robert dropping leaves?

It is less common for Herb Robert to drop leaves, so this usually happens due to extreme heat stress or sudden changes in moisture. Check your soil moisture first to see if the plant is drying out too quickly.

Check these first

  1. Feel the top inch of soil for dryness.
  2. Check the location for excessive afternoon sun.
  3. Inspect the stems for signs of shriveling.

Likely causes

  1. Heat Stress

    Most likely

    How to tell: The leaves wilt and turn crisp before falling off during hot summer spells.

    What to do: Move your plant to a spot with more afternoon shade. Water deeply every 3 to 5 days to keep the root zone cool.

  2. Inconsistent Watering

    Possible

    How to tell: The soil is bone dry and the stems look limp before the leaves drop.

    What to do: Check the top inch of soil every 3 days. Water thoroughly until liquid drains from the bottom of the pot.

Find out what's wrong with your herb robert

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 entire plant is losing leaves rapidly. It is normal for the oldest, lowest leaves to yellow and drop as the plant matures.

Stopping it coming back

Maintain a consistent watering schedule and provide partial shade during the hottest part of the day.

Keep your herb robert 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 remove the fallen leaves?
Yes, clear away any dead foliage from the soil surface to keep the area clean and prevent fungal issues.
Will the leaves grow back?
The plant will grow new foliage from the nodes if the stems remain healthy and green.

More problems with Herb Robert

Back to the Herb Robert 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.