Hey man just joined myself, welcome! :thumb_up:

I like your current area of interest because that is essentially my field. What you do mean by you preform tlc on every plant you find? From an organic chemistry standpoint, TLC = thin layer chromatography. Are you using a solvent to extract different plants and see what info a TLC plate of it will give you, because it isn't much. How much organic chemistry experience do you have and especially with column chromatography (CC). If you want to use CC do you have access to a UV light(with high and low wavelengths) and staining reagents for TLC?

Anyway hope you learn all the info you seek here  ... There certainly is a lot.