You don't have to spend a fortune at the craft stores to make a great natural wreath. If you have a willow tree that loves to drop its long branches all over the yard (the bane of my husband's existence :), then you have about all you need. If you don't have one, ask around, maybe a friend does. Or investigate other trees, vines, shrubs that might also be suitable.
If you've ever made a grapevine wreath, the process is the same for willow branches. Make your initial circle to the size desired by wrapping the pliable branch around itself. Slightly green branches work best. Then begin wrapping additional branches tucking the ends in between until you get the wreath thickness you desire.
If you have floral wire or any thin gauge wire (twisty ties with the paper coating peeled off), you can secure the finished wreath in a couple places. Hide the wire with whatever you decorate your wreath.
My photo shows a willow wreath in progress. Notice the ends that need to be trimmed or tucked in. But you may like to leave some for a more natural look. There's no right or wrong with this craft.
By ~gloria from western NY