In addition to the Binary trees, the folks from the Botanica Mathematica project also posted a Fibonacci tree recipe. This gives us a different type of tree to play with, and one that arguably looks more natural as well.

Here’s my attempt, before stuffing and adding leaves, including the yarns used:

Again, I used a solid brown held together with a variegated sock yarn. To give the bark a bit of structure, I used a very simple pattern: one knit, one purl all the way round, and then exactly opposite the next round. Again, I used the recipe as a rough guideline rather than following the exact numbers of rounds indicated. I started with 21 stitches and worked my way up. In order to avoid an ugly seam somewhere, all my branches have an uneven number of stitches, so the pattern comes out right automatically when doing one knit, one purl in the round.

Here’s a peek at the finished tree:

If you like my pom-pom leaves, I’ll write about how to make lots of pom-poms in one go next time. It’s way more fun than making one at a time!