How to keep a real Christmas tree alive

By Sophie Sparkes · October 2026 · 6 min read

A cut Christmas tree is still a living thing when you bring it home, and it keeps drinking for weeks. Almost every tree that turns brown and sheds by Boxing Day has simply run out of water, usually because the cut end sealed over or the stand ran dry. Get those two things right and a good tree will stay green well into January.

Short answer: buy a freshly cut tree, ideally a Nordmann fir if needle drop bothers you. Saw about 2.5cm off the base just before it goes in the stand, and use a stand that holds plenty of water. Top it up every day, since a fresh tree can drink a litre or more a day at first, and never let the water drop below the base of the trunk. Keep it away from radiators, fires and sunny windows, and turn the heating down a little if you can.

Choosing a tree that will last

The type of tree matters as much as the care:

Whatever you choose, check it is fresh. Run your hand gently along a branch: very few green needles should come away. The needles should bend rather than snap, the branches should feel springy, and the tree should not look dull or grey. Bouncing the trunk on the ground will shake out a few old brown needles from inside the tree, which is normal, but a shower of green ones is a bad sign.

Before it comes inside

If you buy it early, keep the tree outside somewhere cool and sheltered, out of the wind, standing in a bucket of water. Saw a thin slice off the base first so it can drink. A tree that waits a week in a cold garden in water will last far longer indoors than one kept in a warm hallway.

The cut that makes all the difference

When a tree is cut, sap seals the wound within a few hours, and a sealed trunk cannot take up water however much you pour into the stand. So just before you put it in the stand, saw about 2.5cm off the bottom with a straight cut across. Don't cut it at an angle, drill holes or strip the bark off the bottom, as these do not help and can make it harder to stand straight. If the tree ever goes a day or more without water, it may need a fresh cut.

How much water does a Christmas tree need?

More than most people expect. A rough guide is about a litre a day for every 2.5cm (1 inch) of trunk width, at least for the first week, after which it slows down. A typical 6ft tree can easily drink a litre or two a day at first.

• Use a stand with a big water reservoir, not a bucket of stones or a stand that only grips the trunk.
• Check it every day and top it up. Never let the level drop below the base of the trunk.
• Plain tap water is all it needs. Sugar, aspirin, lemonade and other additives do not help it last longer, and some encourage bacteria.

Going away for a few days? Top up just before you leave, and consider a stand with a larger reservoir or a self-watering stand.

Where to put it

Heat and dry air are what make a tree drop its needles. Keep it away from radiators, fires, wood burners and sunny windows, and if you can, turn the radiator nearest the tree off or down. A cooler room really does make a difference. Give the branches a day to drop and settle after taking the net off before decorating, and use LED lights, which run cooler than old bulbs.

When to put it up

A well-chosen, well-watered Nordmann fir will usually stay fresh for four to five weeks indoors, so early December works well. Norway spruce lasts less long in a warm house; bring one in around mid December. If you like the tree up from the start of December, choose a fir.

Christmas trees, cats and dogs

The needles and sap of Christmas trees can upset a pet's stomach if chewed, and sharp needles can hurt mouths and paws, but the main risks are practical ones. Use a heavy, stable stand, and consider tying the top to a wall or curtain hook if you have a climbing cat. Cover the water in the stand so pets cannot drink it, especially if anything has been added to it. Keep breakable baubles, tinsel and chocolate decorations off the lowest branches. For houseplant risks over Christmas, see our guide to houseplants toxic to cats and dogs.

Potted Christmas trees

There are two kinds of tree sold in pots, and they are not the same:

• Pot-grown trees have been grown in their pot for a year or more. They have a proper root system and have a good chance of surviving to be used again.
• Containerised or potted trees have been dug from a field and put in a pot, losing most of their roots on the way. They often struggle to survive afterwards.

Either way, a living tree can only cope with a short spell indoors, ideally no more than 10-12 days, in the coolest spot you have. Keep the compost moist, then move it to a sheltered porch or shed for a few days before putting it back outside. Pot-grown trees can stay in their pot for a few years, with yearly potting on, or be planted out once winter is over.

Christmas tree questions

How do I stop my Christmas tree dropping needles?

Buy a fresh tree of a type that holds its needles, such as a Nordmann fir. Cut 2.5cm off the base just before putting it in a stand with a big reservoir, keep it topped up every day, and keep it away from heat. Most needle drop comes from a tree that has dried out.

Why isn't my Christmas tree drinking water?

The cut end has sealed with sap, usually because it was left out of water for more than a few hours. Take it out, saw off another 2.5cm and put it straight back into water.

Should I put sugar or aspirin in my Christmas tree water?

No. Plain water works best. Additives do not make the tree last longer, and sugar can encourage bacteria that clog the trunk.

How long does a real Christmas tree last?

A fresh Nordmann or Fraser fir kept well watered and away from heat usually lasts four to five weeks indoors. A Norway spruce lasts less long, so it is better bought and brought in later.

Can I replant my Christmas tree?

Only if it was genuinely pot-grown with its roots intact, and even then only if it spends a short time indoors in the cool. Cut trees cannot be replanted, and dug-up containerised trees rarely survive.