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Corn Cockle · Agrostemma githago

Why is my Corn Cockle not flowering?

Corn Cockle is a prolific bloomer, so a lack of flowers is usually a sign of environmental stress. The most common culprit is a lack of direct sun.

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Check these first

  1. Verify the plant is getting at least 6 hours of direct sun.
  2. Check your recent fertilizing schedule.
  3. Inspect the plant for any signs of pest damage.

Likely causes

  1. Lack of direct sun

    Most likely

    How to tell: The plant looks healthy and green but produces no buds. It is likely sitting in partial shade.

    What to do: Move the plant to a location with full sun. It needs at least 6 hours of direct light to trigger blooming.

  2. Excess nitrogen

    Possible

    How to tell: The plant has lush, dark green foliage but no flowers. This often happens if you use a high nitrogen fertilizer.

    What to do: Stop using nitrogen rich fertilizers. Switch to a balanced or bloom boosting formula with higher phosphorus content.

Other plants that won't flower

Find out what's wrong with your corn cockle

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

If your plant is mature and the season is mid summer without any buds, it is time to adjust the light or nutrients.

Stopping it coming back

Keep the plant in full sun and avoid over fertilizing with nitrogen.

Corn Cockle: not flowering? Check yours with a photo

Every plant is a little different. Take a photo of your corn cockle 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.

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Questions people ask

Does Corn Cockle need special soil to bloom?
It prefers well draining soil. If your soil is too rich or heavy, it may focus on leaf growth instead of flowers.
When should I expect flowers?
Corn Cockle typically blooms from late spring through mid summer.

More problems with Corn Cockle

Back to the Corn Cockle guide

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