Does yellowing mean I need more fertilizer?

Usually not, as yellowing is more often related to water or light. Check your soil moisture and sunlight before adding any nutrients.

Can I save a plant with yellow leaves?

Yes, if you catch it early by correcting the watering or airflow. Remove the damaged yellow leaves to keep the plant looking tidy and prevent further stress.

Large flowered tickseed: yellow leaves, causes and fixes

Check these first

Feel the soil one inch deep to check for excess moisture.
Inspect the underside of leaves for signs of pests or fungus.
Check if the plant is crowded by other garden neighbors.

Likely causes

Overwatering
Most likely
How to tell: The lower leaves turn yellow and may feel soft or mushy to the touch. The soil stays wet for too long between waterings.
What to do: Wait until the top inch of soil is dry before watering again. Ensure your soil has excellent drainage and is not sitting in a low spot that collects water.
Powdery Mildew
Possible
How to tell: This is less common for this plant, but poor air circulation can lead to a white fungal growth that causes leaves to yellow and drop. Look for a dusty white coating on the leaf surfaces.
What to do: Prune back crowded foliage to improve airflow around the plant. If the infection is severe, apply a neem oil spray or a fungicide labeled for powdery mildew in the early morning.

Yellow leaves on other plants

Find out what's wrong with your large flowered tickseed

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 spreads rapidly across the whole plant or if the stems start to rot at the base. It is normal for a few old leaves at the very bottom to yellow and drop as the plant matures.

Stopping it coming back

Water only when the top inch of soil is dry and provide plenty of space between plants for air to move. Avoid overhead watering to keep the foliage dry.

Large flowered tickseed: yellow leaves? Check yours with a photo

Every plant is a little different. Take a photo of your large flowered tickseed 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

Does yellowing mean I need more fertilizer?: Usually not, as yellowing is more often related to water or light. Check your soil moisture and sunlight before adding any nutrients.
Can I save a plant with yellow leaves?: Yes, if you catch it early by correcting the watering or airflow. Remove the damaged yellow leaves to keep the plant looking tidy and prevent further stress.

Guides to these causes

Powdery Mildew

Why are my Coreopsis grandiflora leaves turning yellow?

Check these first

Not sure what's wrong with your large flowered tickseed?