Should I cut off the yellow leaves?

Yes, you can remove them as they will not turn green again. This helps the plant focus its energy on healthy new growth.

Is yellowing always a sign of a disease?

Not always, as it can be a sign of nutrient deficiency or improper soil conditions. Check your watering habits before assuming it is a disease.

Bottlebrush: yellow leaves, causes and fixes

Check these first

Feel the soil an inch deep to see if it is soggy.
Check the drainage holes for any blockages.
Look at the leaf veins to see if they are still green.

Likely causes

Root Rot
Most likely
How to tell: The leaves turn yellow and drop off, often starting from the bottom of the plant. The soil stays wet for a long time and may smell slightly musty.
What to do: Stop watering immediately and allow the soil to dry out completely. If the plant is in a pot, ensure it has drainage holes and check that the soil is not too heavy or clay based. If the roots are mushy, you may need to repot into fresh, well draining soil.
Iron Deficiency
Possible
How to tell: The leaves turn yellow while the veins remain green, often appearing on the newer growth. This happens if the soil pH is too high, preventing the plant from absorbing nutrients.
What to do: Test your soil pH and aim for a slightly acidic range between 5.5 and 6.5. Apply a chelated iron supplement or an acidifying fertilizer specifically formulated for woody shrubs. Follow the package instructions for the correct dosage based on the size of your plant.

Yellow leaves on other plants

Find out what's wrong with your bottlebrush

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.

When to worry

Yellowing is serious if it spreads rapidly across the whole plant, as this indicates root rot. It is normal to see a few older leaves turn yellow and drop as part of the plant's natural cycle.

Stopping it coming back

Ensure your Bottlebrush is planted in well draining soil and avoid overwatering by watering only when the top inch of soil feels dry.

Bottlebrush: yellow leaves? Check yours with a photo

Every plant is a little different. Take a photo of your bottlebrush and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.

Get the app · Or check it from a photo now, free

Questions people ask

Should I cut off the yellow leaves?: Yes, you can remove them as they will not turn green again. This helps the plant focus its energy on healthy new growth.
Is yellowing always a sign of a disease?: Not always, as it can be a sign of nutrient deficiency or improper soil conditions. Check your watering habits before assuming it is a disease.

Why are my Bottlebrush leaves turning yellow?

Check these first

Likely causes

Root Rot

Iron Deficiency

Find out what's wrong with your bottlebrush

When to worry

Stopping it coming back

Bottlebrush: yellow leaves? Check yours with a photo

Questions people ask

Guides to these causes

More problems with Bottlebrush