Here is the full list of all 40 Wylde Flowers achievements.
Craft every item
Complete 100 bulletins
Turn the season to Spring again
Build the greenhouse
Turn the season to Fall
Marry Amira
Get gold stars on all 20 mine collection boards
Shapeshift into a cat
Get engaged to be married
Fly the broomstick for the first time
Discover the identity of all coven members
Form a romantic partnership
Repair the mountain bridge
Start dating someone
Turn the season to Summer
Make an intimate friend
Complete 20 bulletins
Construct a larger garden plot
Restore the barn
Restore the chicken coop
Upgrade the tool shed
Restore the ranch
Make a good friend
Adopt the cat
Make a casual friend
Make a new acquaintance
Cast the initiation rite
Discover Gramma's basement
Meet all of the residents of Fairhaven
Start your farming life
Marry Cameron
Marry Damon
Marry Giva
Marry Kai
Marry Kim
Marry Westley
Cook every recipe
Catch every type of fish
Discover everyone's favorite foods
Grow 20 flowers at once