A Christmas tree's water intake can naturally change from day to day, so drinking less water does not always mean something is wrong.
If your tree still looks fresh, the needles are flexible, and the branches are not brittle, continue keeping water available and monitoring it.
Why did my Christmas tree suddenly stop drinking water?
There are several possible reasons:
Your tree may simply need less water than it did during the first few days indoors.
The temperature or humidity in your home may have changed.
The water level may have dropped below the base of the trunk.
The fresh-cut base may have been exposed to air long enough to begin drying out.
If the base dries out, the sap at the cut surface can harden and partially seal the trunk, making it harder for the tree to absorb water.
What should I do if my Christmas tree isn't drinking?
Start by checking the basics:
Make sure the bottom of the trunk is fully submerged in water.
Refill the stand with plain water if needed.
Continue checking the water level daily.
Watch the tree's needles and branches for signs of dryness.
If the stand previously ran dry and your tree appears to be drying out, the most reliable option is to give it another fresh cut.
Remove the tree from the stand, use a saw to make a new straight cut across the bottom of the trunk, and place it back into water immediately.
Avoid shaving or whittling down the sides of the trunk. The outer layers of the trunk are especially important for absorbing water.
Should I worry if my tree drinks less water later in the season?
Not necessarily.
Many Christmas trees drink the most water during their first several days indoors and gradually drink less over time. As long as the tree still looks fresh and the base remains submerged, a decrease in water intake can be completely normal.
The most important thing is to never let the stand run dry, even if your tree is drinking less water than it was earlier in the season.