Crocheting an Amigurumi cactus can be a fun and creative project! Here’s a basic pattern to get you started:

Materials you will need:

Worsted weight yarn in green for the cactus and various colors for flowers (you can choose any colors you like)
Crochet hook suitable for your yarn weight
Fiberfill or stuffing
Yarn needle
Scissors
Safety eyes (optional)

Pattern:

Cactus Body:

Start with a magic ring (or you can chain 2 and work in the second chain from the hook).
Round 1: Make 6 single crochet (sc) stitches into the magic ring (or second chain from the hook). Pull the ring tight to close. (6 stitches)
Round 2: Work 2 sc stitches into each stitch around. (12 stitches)
Round 3: Sc in the next stitch, 2 sc in the next stitch Repeat from * to * around. (18 stitches)
Rounds 4-10: Sc in each stitch around. (18 stitches)
Round 11: Sc in the next stitch, sc2tog (single crochet two stitches together) in the next two stitches Repeat from * to * around. (12 stitches)
Stuff the cactus firmly with fiberfill.
Round 12: Sc2tog in each stitch around. (6 stitches)
Fasten off and weave in the ends. Close the opening by weaving the yarn through the front loops of the remaining stitches and pulling tight. Secure and weave in the ends.

Flowers: You can crochet small flowers to decorate your cactus. Here’s a simple flower pattern:

Start with a magic ring (or chain 4 and slip stitch into the first chain to form a ring).
Round 1: Make 6 single crochet stitches into the magic ring (or ring you created). Pull the ring tight to close. (6 stitches)
Round 2: Chain 4, slip stitch into the same stitch Repeat from * to * around. You will have 6 petals.
Fasten off and leave a long tail for sewing.

Assembly:

Attach the flowers to the top of the cactus by sewing them on using the long tail left from the flowers. You can arrange them in any pattern you like.
Optionally, you can sew on safety eyes or embroider eyes using black yarn or embroidery floss.
Embroider a smile or any other facial features using embroidery floss or yarn.