How to decorate a Christmas tree: order, 3-5-7 rule and mistakes
The order that works (lights, garland, baubles, topper), how many decorations each tree height takes, where each size of bauble goes and what the 3-5-7 rule means on a tree.
Decorate a Christmas tree from the inside out: shape the branches, then add the lights, the garland or ribbon, the baubles from largest to smallest and the topper last. John Lewis and Webbs both work on 100 lights per foot of tree, so a 6ft tree takes about 600 bulbs. Below are the seven steps in order, the quantities for each tree height, where each size of bauble goes, what the 3-5-7 rule means on a tree and the mistakes that spoil the result.
How to decorate a Christmas tree step by step
Settle the colour scheme before anything goes on. Christmas Tree World suggests two or three core colours, and James Cornwell Interiors lists the classic pairs: white and red, white and blue, silver and gold. Our Christmas tree decorating ideas set out 12 themes with their colours.
Then work in this order. Each step protects the one before it: lights threaded through a finished tree knock baubles off, and a garland added last squashes them.
- Place the tree. Leave 15 to 30 cm between the top tip and the ceiling for the topper; John Lewis asks for at least 15 cm. Christmas Tree World advises keeping the tree at least three feet, about 90 cm, from a fire, close to a socket and clear of doorways, radiators and light switches.
- Shape the branches. On an artificial tree, start at the bottom: pull each branch away from the trunk, separate every tip and spread the tips in different directions. Christmas Tree World says an extra 15 minutes of fluffing makes a visible difference to the finished tree. A real tree needs its netting cut off and time for the branches to drop.
- Lay the tree skirt. John Lewis puts the skirt round the stand before decorating, so nobody has to crawl under finished branches. Pick one no wider than the lowest branches from our Christmas tree skirts, which also include rigid wicker, metal and velvet collars.
- Add the lights. Test the set on the floor first: Electrical Safety First asks you to check for damage and loose wires every time the lights come out. Run each round in towards the trunk and back out to the tips, and check the bulb count on the box of any set from our Christmas tree lights. Our guide on how to put lights on a Christmas tree covers the spiral, the spacing and where the plug should end up.
- Drape the garland, beads or ribbon. Webbs suggests 1.5 to 2 m of garland per foot of tree. Start at the top and spiral down loosely, letting each swag hang a little deeper than the one above.
- Hang the baubles. Largest first, pushed deep into the branches, then medium and small ones to fill the gaps on the outer tips.
- Finish with the topper and extras. Christmas Tree World fixes the topper with florist’s wire or hidden hooks. Picks, sprays and candy canes go into the last gaps, and the presents go under the tree at the very end.
If the topper lights up, fit it before the tree lights. Its cable can then run down the trunk alongside the light set and finish at the base with the other plug. Our Christmas tree toppers include light-up stars and angels as well as plain glitter, wire and glass ones.
How many decorations for each tree height
The table scales four published rules to common tree heights: 100 lights per foot (John Lewis and Webbs), 1.5 to 2 m of garland and 4 to 7 main baubles per foot (Webbs), and Christmas Tree World’s tree skirt sizes.
| Tree height | Lights | Garland or ribbon | Main baubles | Tree skirt diameter |
|---|---|---|---|---|
| 4ft (122 cm) | 400 | 6 to 8 m | 16 to 28 | 45 cm |
| 5ft (152 cm) | 500 | 7.5 to 10 m | 20 to 35 | 45 to 60 cm |
| 6ft (183 cm) | 600 | 9 to 12 m | 24 to 42 | 60 cm |
| 7ft (213 cm) | 700 | 10.5 to 14 m | 28 to 49 | 75 cm |
| 8ft (244 cm) | 800 | 12 to 16 m | 32 to 56 | 75 cm or more |
The bauble count covers the main baubles only; clusters, minis and picks come on top. A slim tree needs less of everything and a wide one more. For the skirt, Christmas Tree World’s formula works with any stand: measure its diameter and add 10 to 15 cm.
Baubles, toppers and skirts for every size of tree are gathered in our tree decorations collection.
The Christmas Workshop
White angel tree topper, diamante bodice, feathered wings, 30 cm
How to arrange baubles on a Christmas tree
Think of the tree in layers, from the trunk out, and in bands, from the base to the top. The size of each bauble decides where it goes.
Depth: big baubles inside, small ones on the tips
- Near the trunk: the largest and plainest baubles. Christmas Tree World and Webbs both hang baubles deep in the branches to give the tree depth, and they hide the gaps where the trunk shows.
- Midway along the branches: medium baubles, spread evenly.
- On the tips: small baubles and the special pieces, where people see them close up.
Sizes in our Christmas baubles collection run from 2.5 cm minis to 10 cm baubles: keep the 8 to 10 cm ones for the inner layer, 6 cm for the middle and the 3 cm minis for the tips.
Height: heavier at the bottom, lighter at the top
Urban Barn’s decorating guide puts larger ornaments on the bottom and middle of the tree and saves small, light ones for the top, where the branches are thinner and droop under weight. Graded sizes also follow the cone of the tree, so the top never looks heavy.
Spacing: a zig-zag, never rows
Hang one type of bauble at a time and work in a zig-zag up and down the tree, so identical baubles never line up into stripes. Urban Barn suggests dividing the tree into thirds, or into four vertical sections, and giving each the same share. Shiny, matt and glitter finishes look fuller mixed together than in blocks of one finish.
Baubles do go on the bottom branches, but in a home with a toddler, a cat or a dog, keep the lowest band to shatterproof ones and hang glass higher up. Christmas Tree World recommends shatterproof baubles and well-secured decorations for homes with pets and children.
The 3-5-7 rule for decorating a Christmas tree
The 3-5-7 rule comes from interior styling: group objects in odd numbers, three, five or seven, rather than in pairs. It is the rule of odds from art and photography, where an even number of objects reads as symmetrical and an odd number looks more natural.
On a Christmas tree, apply it at three scales:
- Clusters of three: wire three small baubles of different finishes to one hook and hang them as a single decoration, a trick used by one of the interior designers quoted by the housebuilder Bellway. A cluster fills a gap better than three baubles spread out.
- Repeats of five or seven: pick one feature decoration, such as a bow, a glass bird or an oversized bauble, and repeat it five times on a tree up to 5ft or seven times on a taller one, spaced in a zig-zag.
- Groups round the base: stack presents, lanterns or figures in threes or fives rather than in matching pairs.
The rule does not apply to colours. Two colours, such as red and gold, work as well as three; what matters is repeating them evenly round the tree.
How to decorate a Christmas tree to look full
A sparse tree usually needs better placement rather than more decorations. Five fixes:
- Fluff again. Most gaps are branches that were never opened: separate every tip, bottom row first.
- Light the inside. Lights wrapped only round the outer tips leave a dark core, so take each round in towards the trunk.
- Fill the holes from the back. A large plain bauble pushed deep into a gap does more than three small ones on the tips.
- Tuck ribbon instead of winding it. Fold a wide ribbon in loops between the branches without cutting it, or make curls: Macy Blackwell, a seasonal decor stylist quoted by Newsweek, wraps 18-inch (about 45 cm) lengths round her wrist, then tucks the curls into the branches. Urban Barn uses wired ribbon where loops must hold their shape and plain ribbon for a softer drape.
- Finish with picks and sprays. Berry stems, frosted sprigs, pine cones or dried orange slices pushed into the last gaps add texture between the baubles.
Mistakes to avoid when decorating a Christmas tree
- A tree too tall for the room: the topper hits the ceiling. Measure first and leave 15 to 30 cm.
- Skipping the fluffing: gaps show through once the baubles are on, and filling them means taking decorations off again.
- Lights after baubles: the first rule in James Cornwell Interiors’ guide is lights before baubles and everything else.
- Baubles in rows: identical baubles at one height make horizontal stripes.
- Heavy baubles on the top branches: the thin tips bend and the tree looks lopsided.
- Too many colours: beyond three main colours the scheme looks accidental, and most guides stop at two or three.
- A cable across a walkway: Urban Barn warns that a socket out of reach turns the lead into a trip hazard.
- Decorations touching the bulbs or close to heat: Electrical Safety First says to keep lights well away from flammable decorations, and the tree belongs at least 90 cm from a fire.
- Joined sets and stacked adaptors: Electrical Safety First advises against connecting different lighting sets together and against overloading sockets.
- Lights left on all night: switch them off and unplug them before you go to bed or go out, as Electrical Safety First advises.
Once the order is right, the choice of decorations is the easy part: baubles, toppers and skirts sit side by side in our tree decorations range.
Frequently asked questions
What is the correct order to decorate a Christmas tree?
Shape the branches, then put on the lights, the garland or ribbon, the baubles from largest to smallest, and the topper with any picks. The tree skirt goes on either before the lights, as John Lewis does it, or at the end to hide the plug. Presents come last.
What is the first thing to put on a Christmas tree?
The lights, once the branches are shaped. Every other decoration is easier to place around a lit tree, because you can see the dark gaps the baubles need to fill. The one exception is a light-up topper, which is easier to wire in before the light set.
What is the 3-5-7 rule in decorating?
It is the habit of grouping decorations in odd numbers, three, five or seven, which look more natural than pairs. On a tree it translates into clusters of three small baubles on one hook, a feature decoration repeated five or seven times, and presents grouped in threes or fives underneath.
Do you put baubles on bottom branches?
Yes. The lowest branches are the strongest, so they carry the biggest and heaviest baubles. With small children or pets in the house, use shatterproof baubles on the bottom band and keep glass ones out of reach.
How do you arrange baubles on a Christmas tree?
Start with the large ones, deep inside near the trunk, then medium ones along the branches and small ones on the tips. Hang one type at a time in a zig-zag so identical baubles never line up, and step back every few minutes to check the balance from across the room.
What should you not do when decorating a Christmas tree?
Do not decorate before fluffing the branches, add the lights after the baubles or put heavy baubles on the top branches. For safety, keep decorations away from the bulbs and from heat, never link different light sets, and switch the lights off at night.
What is the new way to decorate a Christmas tree?
Bows. Christmas Tree World counts oversized velvet bows hung all over the tree, in burgundy, cream or gold, among its ten tree trends for 2026. Ribbon run in long vertical lengths from the top to the base is another way to update a tree without buying new baubles.
Is it okay to leave Christmas tree lights on all night?
No. Electrical Safety First advises switching the lights off and unplugging them before you go to bed or leave the house. A plug-in timer makes the habit easy to keep.
