After a couple months out, you want to kiss the guy that grew radishes in the bilge, after 2 weeks the fresh veg is gone.
Seems to me it would be an ideal place to grow mushrooms, too:
https://www.amazon.com/Oyster-Mushroom-Growing-Gardening-Holiday/dp/B07HM1CDCB/ref=sr_1_11?keywords=mushroom+growing+kit&qid=1561767343&s=gateway&sr=8-11