i am a little confused why not asking for the seeds too? in that way you save alot of time to ask people to collect them and just farm these yourselves. Unless it NEEDS to be extacly in that spot for growing... and it is in danger to be gone forever because of stupid adventurers who wants an extra buck.
It's not like all plants can grow anywhere where is soil with nutrients, water and sun, right degree of soil acidity, humidity, temperature and right amount of right nutrients for specific plants some are more picky than others, you can't for example expect grow cactus on swamps, some plants have also specific conditions like they don't develop flowers unless amount of sunlight is just right for month and in others seeds need to be exposed to low temperature for period of time for them to germinate, and this is fantasy plants growing in fantasy place called dungeon I am guessing amount of mana in air plays the role. Without figuring conditions out you can't grow many plants effectively and figuring those take lot of observation and trial by error attempts