Originally Posted by maotd

Healing node boost don't increase the pest node heal (or if it does, I'm not aware of it) but having multiple sources of healing in one team is good. Add a Chocolate Cosmos/Lantana somewhere in your squad and your Lavender/Edelweiss pair will be good for stage with a lot of small pests or with pests dealing tons of damages (there was an event like that, with pests dealing like 6~8k damages in one hit).
Okay it's not that good, espacially when you have some high level rainbows but that's still better than nothing.

As a note to the subject, Lavender's healing ability is a stage ability and thus i think it works for all squads. Though I'm not completly sure, so I thought i'd just post this since I didn't realize it myself for a long time and also to go sure if that's actually true^^