Should I cut off yellow leaves?

Only cut them off if they are completely brown and dead. The plant needs the yellowing leaves to absorb energy for next year's growth.

Does yellowing mean my plant is dying?

Not necessarily. If it is late in the season, it is just going to sleep for the winter.

Red trillium: yellow leaves, causes and fixes

Check these first

Feel the soil depth to see if it is soggy.
Check the drainage of your garden bed.
Look for signs of late season dormancy.

Likely causes

Overwatering
Most likely
How to tell: The leaves turn yellow and feel soft or mushy to the touch. You might notice the soil surface remains damp for more than 10 days.
What to do: Stop watering immediately and let the top 2 inches of soil dry out. Ensure your planting site has excellent drainage so water does not pool around the roots.
Natural Dormancy
Possible
How to tell: The yellowing happens late in the summer as the plant prepares to go dormant. The entire plant will slowly fade and disappear until next spring.
What to do: Do nothing as this is a normal part of the life cycle. Simply leave the foliage until it turns brown and dies back naturally.

Yellow leaves on other plants

Find out what's wrong with your red trillium

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

Worry if the yellowing happens in early spring when the plant should be growing. It is perfectly normal for the plant to yellow and vanish by late summer.

Stopping it coming back

Maintain a consistent moisture level without letting the soil become waterlogged.

Red trillium: yellow leaves? Check yours with a photo

Every plant is a little different. Take a photo of your red trillium 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 yellow leaves?: Only cut them off if they are completely brown and dead. The plant needs the yellowing leaves to absorb energy for next year's growth.
Does yellowing mean my plant is dying?: Not necessarily. If it is late in the season, it is just going to sleep for the winter.

Why are my Trillium erectum leaves turning yellow?