Pocket BotanistCheck these first
- Check for recent chemical applications near the tree.
- Examine the soil for white crusty deposits.
- Look for similar damage on nearby plants.
Likely causes
Salt accumulation
PossibleHow to tell: The tips of the leaves turn brown and brittle while the rest of the leaf remains green. This often happens after a long dry spell where salts build up in the soil.
What to do: Flush the soil by watering deeply and slowly for several hours to wash salts away from the roots. Ensure the area has good drainage to prevent waterlogging.
Herbicide drift
PossibleHow to tell: Brown tips appear suddenly after nearby lawn treatments or weed control applications. The damage is often uniform across the lower branches.
What to do: Avoid using weed killers near the tree root zone. If drift occurred, rinse the leaves with water to remove any remaining residue.
Find out what's wrong with your oak
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
Worry if the browning spreads rapidly toward the leaf stem or affects the entire canopy. It is normal for some older leaves to brown slightly at the tips as they age.
Stopping it coming back
Keep lawn chemicals away from the tree drip line and use organic mulch to improve soil health.
Keep your oak healthy from here
Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked. Identification and a health check are free.
Questions people ask
- Should I trim off the brown tips?
- You can trim them for appearance, but it is not necessary for the tree's health. Use clean, sharp shears to avoid damaging healthy tissue.
- Does fertilizer cause brown tips?
- Yes, over-fertilizing can burn the roots and show up as brown leaf tips. Always follow label instructions for application rates.
More problems with Oak
This article was generated with AI from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.