The key to keeping your Christmas tree fresh and sweet smelling is to make sure it doesn’t dry out. The last thing you want for the holidays is a dry, crispy tree that’s a fire hazard.
These evergreens are thirsty plants, especially the first few days in a stand. Monitor the water level every day or two, keeping the stand reasonably full. Plain water is fine — no need for floral preservatives.
If you let your stand dry out completely, I’ve had luck using a power drill to open up a few holes in the base of the tree to get it to draw water again.
The cooler the room, the longer your tree will stay fresh and moist, with minimal needle loss. Keep it away from sources of heat, including fireplaces, radiators, heating ducts and direct sunlight. And always switch off the lights when you go to bed or leave the house.