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.