many staff at the ngo ar achihing tmselvevethe art of gagardening in t the colombianan jungngle. an: a lot of the plant species weave e in o foresestsre not commercicial varietieses. so thehere's no infoformatin available on the best y y to plplant d growow tm. reporter: and not everything grows at the first attempt. juan: we soweded these seeds to months ago.. and we've seen how these species didn't thrive in plaic contaiainers. so we'e're now havg anotothetry over there, directly in th soil.. repoporter: the gagardeners wl have to o wait a few m more weeo see whether this option prov moreuccecessfu juan: know that it's fffficult resestore foresest as opposed to j just saving i it. itit's a complicated processss. bubut it is possssible to regege the originalal forest. reporter: for the time b bein, the ngo stafaff are plantitinge trees themseselves. but the lolong-term planan isr local fafarmers to plalay a bir role i in rerestatatioefforts.. planting newew woodland, h how, is not e enough to sececure the survival of ththe cotton-topop tamarins. proyecto titi also works with vil