Pocket BotanistCheck these first
- Check the soil moisture with your finger to see if it is dry.
- Inspect the soil surface for white salt deposits.
- Examine the leaves for signs of physical damage or wind burn.
Likely causes
Underwatering
PossibleHow to tell: The soil feels bone dry several inches down and the leaves may feel brittle to the touch. This often happens during the first few years after planting when the roots are still establishing.
What to do: Water the tree deeply once every 7 to 14 days to ensure moisture reaches the root zone. Apply a layer of mulch around the base to help the soil retain water.
Salt accumulation
PossibleHow to tell: You might see a white crust on the soil surface or the pot rim if the tree is in a container. This happens when fertilizer salts build up over time.
What to do: Flush the soil thoroughly with plain water to wash out excess salts. Avoid over fertilizing and stick to a balanced slow release fertilizer once in the spring.
Find out what's wrong with your southern magnolia
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 a few older leaves to brown and fall as the tree grows. Worry if the browning spreads rapidly across the entire canopy.
Stopping it coming back
Maintain a consistent watering schedule and apply mulch to keep the roots cool and hydrated.
Southern Magnolia: brown tips? Check yours with a photo
Every plant is a little different. Take a photo of your southern magnolia 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
- Should I trim off the brown tips?
- You can trim them for aesthetic reasons, but it is not necessary for the health of the tree. Use clean, sharp shears to cut just outside the green tissue.
- Does humidity affect the leaf tips?
- Southern Magnolias actually love humidity. If your air is very dry, the tips might brown, but this is rare in their native climate.
Guides to these causes
More problems with Southern Magnolia
- Why are my Southern Magnolia leaves turning yellow?
- Why are there dark spots on my Southern Magnolia leaves?
- What are these pests on my Southern Magnolia?
- Why is my Southern Magnolia drooping?
- Why is my Southern Magnolia losing its leaves?
- Why is my Southern Magnolia not blooming?
- How do I fix root rot on my Southern Magnolia?
Back to the Southern Magnolia 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.