As per the title, I am requesting that Farmer's Delight add its various fruits and vegetables to #createaddition:plant_foods, and its various plant items to #createaddition:plants. This will allow FD items to be used to make C:C&A biomass, without players/modpack devs needing to add all these items to these tags themselves.~
More specifically...

#createaddition:plant_foods should contain
farmersdelight:cabbage
farmersdelight:tomato
farmersdelight:onion
farmersdelight:pumpkin_slice

#createaddition:plants should contain
farmersdelight:sandy_shrub
farmersdelight:wild_cabbages
farmersdelight:wild_onions
farmersdelight:wild_tomatoes
farmersdelight:wild_carrots
farmersdelight:wild_potatoes
farmersdelight:wild_beetroots
farmersdelight:wild_rice
farmersdelight:brown_mushroom_colony
farmersdelight:red_mushroom_colony
farmersdelight:rice_panicle

I took a look at how C:C&A is handling its Biomass recipes, and it seems some of those are already covered in some recipes:

• The recipe asking for forge:crops accepts all FD crops, except for the Rice Panicle;
• The recipe asking for minecraft:flowers accepts all Wild Crops, as they're tagged as such;

This would leave a few of those out still, so we could still add this tag for them. I can take a look later. 👍