Pattern also recommends King Cole Baby DK as an alternate yarn. Three buttons (no size given, but 1 cm should be about right. To make contrasting bobbles, you will also need a small amount of a contrasting color. To add leaves, you will need a small amount of green. The pattern also has bows as an alternative to the embroidery, for which you will need a small amount of narrow double-sided ribbon.

You should be able to make the sweater alone with one 100 gram skein.