Pocket BotanistCheck these first
- Measure the hours of direct sun the tree receives.
- Check if you are using a citrus specific fertilizer.
- Ensure the tree is old enough to bloom.
Likely causes
Lack of Direct Sunlight
Most likelyHow to tell: The tree has lush green leaves but no buds. It is likely not receiving enough energy to produce flowers.
What to do: Place the tree in the sunniest window you have or outdoors during summer. It needs full sun to trigger the blooming cycle.
Nutrient Deficiency
Most likelyHow to tell: The tree looks pale or stunted. It lacks the fuel needed to develop flowers.
What to do: Apply a citrus specific fertilizer every 4 to 6 weeks during the growing season. Follow the package instructions for the correct dosage.
Find out what's wrong with your key lime
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.
Scan with your phone's camera to get the app
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When to worry
Young trees under 3 years old rarely bloom. If your tree is mature and still not blooming after a full summer of sun, something is wrong.
Stopping it coming back
Provide consistent, high intensity light and regular feeding throughout the spring and summer.
Key lime: not flowering? Check yours with a photo
Every plant is a little different. Take a photo of your key lime 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.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
Get the app · Or check it from a photo now, free
Questions people ask
- Do I need to pollinate the flowers?
- If your tree is indoors, you should gently shake the branches or use a small brush to move pollen between flowers. This helps ensure fruit set.
- How much light is enough?
- Key limes need at least 8 hours of direct, unfiltered sunlight. Anything less will result in a healthy tree that refuses to flower.
More problems with Key lime
- Why are my Key lime tree leaves turning yellow?
- How do I get rid of pests on my Key lime tree?
- What are these spots on my Key lime tree leaves?
- Why is my Key lime tree dropping leaves?
- How do I fix root rot on my Key lime?
- Why are my Key lime tree leaves curling?
- Why are my Key lime tree leaf tips turning brown?
- Why is my Key lime tree drooping?
- Why is my Key lime tree looking so leggy?
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.