This page offers a guide on how to complete Request 30: A Beatiful Rose… in Pokémon Legends: ARCEUS (PLA).
This quest is picked up from Berra at Mirelands Camp in Crimson Mirelands. She’ll ask you to show her a completed Pokédex entry for Roselia.
Where to Find Roselia in ARCEUS
Roselia Research Tasks
|Task||Milestone 1||Milestone 2||Milestone 3||Milestone 4||Milestone 5|
|Number Caught During Daylight Hours||1||2||4||6||10|
|Number you’ve defeated with Psychic-type moves||1||2||4||6||10|
|Times you’ve seen it use Poison Powder||1||3||8||20||40|
|Number of different forms you’ve obtained||2||–||–||–||–|
|Number you’ve evolved||1||2||3||–||–|
The easiest way to complete this is to catch 6 Roselia during daylight hours - this way you’ll get 6 research points for number caught, and 4 more points for catching them during the day.
Once you’ve completed the Pokédex entry (remember to speak to Laventon to update it), talk to Berra and show her the entry. She’ll give you x5 Grain Cake and x2 Exp Candy S.