I think I got this idea handed down to me from my mum who I always remember doing this every Christmas. Ever since having my own home I have just always done the same thing and never really thought about doing anything different. She even had to send me pictures of hers this year in order to make me get round to this! Baby has not really given me much time to think about anything for the last 10 days.
The only thing you really need to make this wreath is a wreath form of some sort. Now you can use an oasis wreath which will keep your foliage fresh, but I have always found that it stays fresh for long enough without, and if you use an oasis one you will need to replace every year. My alternative is to use this fake berry wreath which I bought many years ago. The advantage here is I don't have any berries in my garden so it adds some colour, but you can also use willow wreaths or anything else you find in the sales after Christmas which you can re-use year after year.
Now all you need to do is go out into your garden with a pair of snippers or scissors and find yourself some appropriate Christmas foliage. My personal favourites are conifer (like real Christmas trees), ivy (especially if you can get some white and green variegated) and holly, though of course be careful with the holly as it will be sharp, you may need gloves to handle. Essentially you are looking for anything that is still green at this time of year.
Once you have gathered lots of this luscious greenery bring it into the house and start to feed it into your wreath following a directional pattern. I find that this stays in without having to be tied at all as long as you push it into the form far enough. Keep going until your wreath looks lovely and full and there are no gaps.
If you have managed to find something with berries then great, if not you might want to think about tying a couple of baubles on by wrapping wire around the section which you hang on the tree and tying it to the wreath. If you wish, you can add some battery powered fairy lights to the wreath by wrapping them around. You will need to secure the battery pack to the back, but you can do this with wire, or tuck it behind the ribbon used for stringing.
Finally loop a piece of ribbon around your wreath and hang it from your door so everyone can marvel in your festive cheer.