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Vinca · Catharanthus roseus

Why is my Madagascar periwinkle not blooming?

These plants love sun and warmth to produce their signature flowers. If yours is not blooming, it is likely missing out on light or nutrients.

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Check these first

  1. Check if the plant is getting enough direct sun.
  2. Look for signs of pests that might be eating the buds.
  3. Check if the soil has been fertilized recently.

Likely causes

  1. Insufficient light

    Most likely

    How to tell: The plant is stretching out and has very few buds.

    What to do: Move the plant to a location that receives full sun. Aim for at least 6 hours of direct sun per day.

  2. Lack of fertilizer

    Possible

    How to tell: The plant looks healthy but simply refuses to produce flowers.

    What to do: Apply a balanced liquid fertilizer diluted to half strength every 2 to 4 weeks during the growing season.

Other plants that won't flower

Find out what's wrong with your vinca

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

It is normal for blooming to slow down during cooler, darker winter months. If it is mid summer and there are no flowers, you need to adjust the light.

Stopping it coming back

Keep your plant in a bright, warm spot and feed it regularly throughout the summer.

Vinca: not flowering? Check yours with a photo

Every plant is a little different. Take a photo of your vinca 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

How much sun does it need?
It thrives in full sun to partial shade. More light generally leads to more flowers.
Should I deadhead the flowers?
You do not have to, as they are self cleaning. However, removing old blooms can keep the plant looking tidy.

More problems with Vinca

Back to the Vinca 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.