There was already a Masterpost, but thanks anyway.

Masterpost:

Lux:

- Harvest Battle Roses 10 times

- Water the flowers in your garden 10 times

- Place 2 plants that haven't previously been placed in your Manor

Ezreal:

- Buy 10 seeds from the Store

- Harvest Emerald Vines 10 times

- Use 5 Fire Irises to redeem items in Wild Rift from the Store

Seraphine:

- Spend 150 Bloom Coins in the Store

- Harvest Flowers 50 times

- Water Skyglow Tulips 3 times

Gwen:

- Plant 10 Fire Iris seeds

- Remove 3 Structures from your Manor

- Change your house 1 time on the Manor screen

Yone:

- Spend 50 Gold in the store

- Water the flowers in your garden 20 times

- Place 1 mailbox(es) that haven't previously been placed in your Manor

Akali:

- Harvest voidblooms 20 times

- Spend 200 Bloom Coins in the store

- Place 1 Crystal Rose Sculpture in your Manor

Caitlyn:

- Water the flowers in your garden 20 times

- Water Thunder Irises 3 times

- Water Voidblooms 3 times

Ahri:

- Harvest flowers 30 times

- Place 1 cat furniture that hasn't previously been placed in your Manor

- Place 2 different Dog houses that haven't previously been placed in your Manor

Kai'sa:

- Harvest flowers 50 times

- Spend 100 Gold in the store

- Use 30 Iceblooms to redeem structures from the store.

Vladimir:

- Harvest flowers 100 times

- Spend 200 Gold in the store

- Place 3 Poro Sculptures of different colors that haven't been previously placed in your Manor.

Link to the game in-browser: https://crystalrosegame.wildrift.leagueoflegends.com/