Here is the full list of all 17 Grow Up achievements worth 1,000 gamerscore. It takes around 10-12 hours to unlock all of the achievements on Xbox One.
Throw 100 seeds whilst gliding
Blast a critter 100m
Complete the game 100%
Complete all challenges
Collect all crystals
Unlock all telerouters
Orbit the entire planet in BALL mode
Unlock all seeds
Complete a challenge holding a Critter
Discover letter block P
Discover the bull and the sheep
Take a critter to the moon
Plant 10 Champolines on top of each other
Grab two Sporchids simultaneously and ride upwards for 400m
Rescue MOM
Flower all STARPLANTS
Visit all biomes