I searched Ravelry and found some great patterns but they either didn't use the yarn weight that I had, didn't have multiple sizes, or were a bit too detailed for the time I had. I knew I could make the spikes so I decided to make a regular hat and add the spikes.
I think it turned out pretty
Here's the pattern:
Materials You Will Need:
Green worsted weight yarn (sorry, I don't keep track of yardage)- I used Red Heart Super Saver, Light Sage
White worsted weight yarn- I used Red Heart Super Saver, White
Size 7 circular needle
Size 7 double pointed needles
1 stitch marker
1 tapestry needle
K2tog- Knit 2 stitches together to decrease
DPNs- Double pointed needles
For main hat
With green yarn (or main color of choice) and size 7 circular needles cast on 80 stitches.
Place marker and join for knitting in the round. Start knitting ribbing by alternating knit and purl sts. Continue in 1x1 ribbing till work measures about 1-2 inches.
Switch to stockinette stitch (knit all rounds) and knit till work measures about 5 inches.
Work the following decrease rounds and switch to DPNs when needed
Row 1: [knit 8, k2tog] repeat around
Row 2 (and all even rows): knit all stitches
Row 3: [knit 7, k2tog] repeat around
Row 5: [knit 6, k2tog] repeat around
Row 7: [knit 5, k2tog] repeat around
Row 9: [knit 4, k2tog] repeat around
Row 11: [knit 3, k2tog] repeat around
Row 13: [knit 2, k2tog]repeat around
Row 15: [knit 1, k2tog] repeat around
Row 17: k2tog till end of row
Finish hat by k2tog until 3 stitches remain on the needle. Cut yarn leaving a 10 inch tail, weave through remaining stitches, pull through to inside of hat and weave in. Weave in beginning tail.
For spikes (make as many as you like):
With white yarn (or color of choice) and 2 DPNs (or size 7 straight needle) cast on 10 sts leaving a long tail.
Row 1: Knit 1 row
Row 2 (and every row till only 2 stitches remain): k2tog, k to end of row
Knit the last 2 stitches together, cut string leaving about 3 inches and pull through remaining stitch. Weave yarn through. Use the beginning tail to sew the spike to the hat.