Requirements:

Chop Fully Grown Pine Trees 24 Times
Heal Three Otters
Craft 8 Puppy Comforters

Rewards:
Fully Grown Willow, Lumber Tree Serum, Mushroom Crop Unlocked
Notes: Otters take 10 Otter Milk which is a request and comes from the FARM Building Aid Crate. Each Comforter takes 3 Oversized Pillows (Marshmallows) and 4 Extra Stuffing (Wall Post)