you'd have to put them in individually or pay for a plugin called beacon
[Harvest]
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_RareFlower_C",Multiplier=5.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemConsumable_Seed_Citronal_C",Multiplier=5.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemConsumable_Seed_Longrass_C",Multiplier=5.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemConsumable_Seed_DefensePlant_C",Multiplier=5.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemConsumable_Seed_Narcoberry_C",Multiplier=5.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemConsumable_Seed_Tintoberry_C",Multiplier=5.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemConsumable_Seed_PlantSpeciesY_C",Multiplier=5.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemConsumable_Seed_PlantSpeciesZ_C",Multiplier=5.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemConsumable_Seed_Rockarrot_C",Multiplier=5.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemConsumable_Seed_Savoroot_C",Multiplier=5.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_RareMushroom_C",Multiplier=5.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_Wood_C",Multiplier=15.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_Stone_C",Multiplier=15.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_Thatch_C",Multiplier=15.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_Fiber_C",Multiplier=15.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_Hide_C",Multiplier=15.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_ChitinPaste_C",Multiplier=15.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_Keratin_C",Multiplier=15.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_Crystal_C",Multiplier=10.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_RawMeat_C",Multiplier=15.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_RawMeat_Fish_C",Multiplier=15.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_RawPrimeMeat_Fish_C",Multiplier=15.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_RawPrimeMeat_C",Multiplier=15.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_Silicon_C",Multiplier=10.0)
HarvestResourceItemAmountClassMultipliers=(ClassName = "PrimalItemResource_Pelt_C",Multiplier=10.0)