We've got too many boat
projects going on right now for me to keep plants alive and intact right now, but I wanted to expand on an earlier post.
I have grown the following in small spaces and/or on the sailboat:
--cuban oregano, rosemary, lavender (regular potting soil, pot hung, and restrained with bungee cord so as not to swing) [SELECT SALT-TOLERANT PLANT SPECIES SUCH AS THOSE OF THE MEDITERRANEAN
, all caps because any plant in the cockpit
or elsewhere topsides will get salt
--scallions, ginger, crocus, sweet potato slips, avocado slips, garlic greens, tulips, celery regrowth, second romain sprout, carrot trimmings sprout (anything having shallow growth patterns, or a bulb as a food
source, or regrowth behavior, can be grown in the sunniest spot, in a secured clear pot lined with mesh or some sort of spacer and topped with water
[note: the type of material used to fill true outdoor cushions
should be drain-through, which is acceptable for this medium, as it gridlocks the water while the plant roots can stay pleasantly moist but not waterlogged])
--sprouts (all kinds, I think there are dozens of threads on the topic of growing sprouts. there are harder and easier ways--specific to how you live on a boat, the types of containers used, eating habits, sail plans, galley
--microgreens grown in a fodder style system
--more traditional items (tomatoes, etc) that CAN be grown on a boat, but my goodness the work/yield and space/yield ratios do NOT pay off. Don't bother, IMO. You'd be better served figuring out how to roast, can, dry a bushel of farmer-sourced tomatoes than grow a few cherry tomatoes after months of hovering over the plant.
In general, knowing your plants and their preferences, you can select plant species in line with where you can house them and the medium you plan on using. If you plan on crossing state or country borders with your boat, you may find all your plants are confiscated. (or none, it's a crapshoot)
Also, I don't count this as a category of gardening, per se...but buying
potted herbs and etc is a good way to have fresh herbs aboard--buy fresh cut, buy potted live, buy fresh dried--eat the fresh cut stuff first, the potted live stuff 2nd, and the dried herbs last or as appropriate. As you defoliate the plants, toss the pots and soil. Less extreme than carrying live chickens ;-). However, this strategy becomes riskier in areas with infestation issues. You will have to curate carefully.
Hope this helps! I find a way to work
in someone's land garden every year, to appease the longing for cultivating living things, so I understand completely :-)!!