Variations: Long Stitch
long double crochet
long single crochet
Spike stitches are usually made with either double (USA - single) crochet or treble (USA - double)
crochet stitches. The spike being made by inserting the hook into a stitch (or chain space) the row (or several rows) below the row currently being worked.
The hook can also be inserted into a stitch (or chain space) to the left or right of the place being worked to create different patterns.
Tutorial (dc spike):