I was originally going to thread real popcorn garlands for Christmas this year but I just can't guarantee the safety of them with the dogs.
Lee at Killiecrankie Farm got me thinking with her crotchet leaf garland she has been making for Christmas and I remember my grandmother making me a bedspread when I was a young girl using popcorn stitch.
Using 100% wool also means that the garland will be safe around the lights on the tree and it can be hand washed and stored for many years to come.
I do 12 chain st (the last 2 I count as a treble) then I do 6 trebles into the 10th chain
I do not complete each treble. You yarn over and pull through once and then leave the next sitting on the needle so you end up with seven stitches sitting along the hook
you yarn over and pull through all of them together.....
this forms a popcorn.
Of course you can vary how many chain stitches between and how many trebles to determine the size of your popcorn but this is what I found effective and manageable.
....or if you have neither the time or inclination I am selling garland on etsy for $1/metre just tell me how long you need it.