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Princess Flower · Tibouchina

Why is my Princess Flower not blooming?

A Tibouchina that refuses to bloom is usually missing out on enough light or the right nutrients. Start by moving your plant to a spot with more sun.

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Check these first

  1. Evaluate the amount of daily sunlight.
  2. Check the type of fertilizer you are using.
  3. Ensure the plant is not in a drafty area.

Likely causes

  1. Insufficient light

    Most likely

    How to tell: The plant looks healthy and green but produces no buds. It may also look stretched out or leggy.

    What to do: Move the plant to a location where it gets at least 6 hours of bright light daily. If indoors, place it directly in a south facing window.

  2. Excess nitrogen

    Possible

    How to tell: The plant has lush green foliage but no flowers. This often happens after using a high nitrogen lawn fertilizer.

    What to do: Switch to a bloom booster fertilizer with higher phosphorus and potassium levels. Stop using nitrogen heavy fertilizers during the growing season.

Other plants that won't flower

Find out what's wrong with your princess flower

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 the plant to rest during the winter months. Worry if it fails to bloom during the peak summer growing season.

Stopping it coming back

Provide consistent bright light and use a balanced fertilizer designed for flowering shrubs.

Princess Flower: not flowering? Check yours with a photo

Every plant is a little different. Take a photo of your princess flower 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

Should I prune it to get more flowers?
Yes, light pruning after a bloom cycle encourages new growth and more flowers. Avoid heavy pruning right before the expected bloom time.
How long does it take to bloom?
Young plants may take a season or two to establish. Once mature, they should bloom reliably from late spring through fall.

More problems with Princess Flower

Back to the Princess Flower 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.