But before we get started with actually tying the spiral knots, you need to figure how much cording you will need for each inside curved wire.
You don't want to run out of cord before you finish. Unfortunately, deciding how much you need is not an exact science. Lots of variables are involved. Like the size and thickness of the cord and what you want to make.
There are many videos on how to determine how much you will need. Some involving math and estimations. I will go with what I call guesstimating. Ha! I liked one tutorial that said to use 4-6 times the length of the project, or area in my case, and then double that amount. Whew! I think this was the worst part. So I measured the length of one of the inside curved wires and got a little over 14" so I rounded it off to 15 inches. Then multiplied that by 5 (between 4-6 right!) and got 75". I doubled that (75) to 150 inches for what I needed. So I got out my yard stick (36" long) and measured the cord for each wire curve 4 times (36"x4=144") - the length of the yard stick four times plus 6 inches to equal 150 inches.
Thankfully, I am using a roll of natural cord I got from Hobby Lobby. It had 135 feet of cord. There was more than enough to cover the entire wire pumpkin with spiral knots, including wrapping the stem with a back and forth design.