This pattern will take around 30-45 minutes.
For this pattern you will need:
A hot glue gun
Sewing needle
Yarn in green and another colour for the rose head.
A crochet hook in sizes 2.5mm to 4.0mm depending on yarn weight and preference.
Stitch markers (10 recommended).
The rose will be about 7 cm in diameter by the end. But this all depends on tension and how it's sewn together at the end.