I use this scalloped edging all the time on different crochet projects. It adds a nice finished edging. It also works well with Granny Squares as I think it is a variation. You will need a granny square stitch project either a granny stripe  or granny square blanket.
Supplies
- yarn
- granny square
- hook to match yarn
The Sides
I am starting with 1 granny square. It has five holes on each side counting the corner holes.
Join your yarn to a corner.
*Crochet a double crochet from the joining stitch to the open space between the groups of    double crochet.
Crochet 5 or 6 double crochet into the space. Here I crocheted five because the yellow yarn is worsted weight and the square is a dk weight yarn.
With the last double crochet stretch it over to the next space and join with a chain.
Repeat from * across your square or squares until you reach the corner.
There are two corner options.
Corner Option #1
Join just as you have and then turn the square.
Do the next set of five (or six) double crochet just as you have. The corner will look like this.
and this when you finish two sides.
Corner Option #2
join just as you would and then double crochet into the corner space and chain two.
Do another double crochet followed by a chain.
It will look like this when you round the corner and finish another side.
This adds a nice finish to the edging. It will look great on a blanket or scarf.
The trick to this edging is that you need an odd number of spaces to finish evenly.
Have fun with this edging and share some photos with me on my facebook page of your projects with the pretty scalloped edging.
https://www.facebook.com/Chocolatedogstudio
It is a snow day here and I have a ton of things to get finished. This tutorial was one of them.
See you later,
Karen