This Fallout 76 map shows you all the different locations you can find the plants and flowers throughout the Appalachia. The map provided allows you to fine the following; glowing fungus, rhodo, aster, soot flower, tato, blackberry, bloodleaf, snaptails, firecap, pumpkin, mutfruit, silt beans, starlight berries, honey, firecracker berries, glowing resin, carrot flower and brain fungus.
Here are a few other links to consider for fever blossom, thistle and carrots.