Mae Tera a Nano'n cael hwyl gyda hedyn sycamorwydden, a Septo'n darganfod ei hoffter o gompostio. Tera and Nano have fun with a sycamore seed, and Zepto discovers his love of composting.
4 o fisoedd ar ôl i wylio
5 o funudau
Gweld holl benodau Egin Bach
