Bok Choy
Bok choy (Brassica rapa subsp. chinensis), native to China, is a cool-season brassica that thrives in buckets from early spring through fall—and if you cozy them under floating row covers, even winter. Those crisp, pale green stems and dark leaves flourish in a five-gallon container filled with a nutrient-rich, well-draining mix. I love how ‘Shanghai Baby’ bok choy matures rapidly—usually in 30 to 45 days—offering tender greens for stir-fries or soups. In summer’s heat, I keep buckets in partial shade to prevent premature bolting, which leads to tough, bitter leaves.
Although bok choy isn’t typically invasive, other brassicas can naturalize in some regions, so keep flowers trimmed if you don’t want volunteer seedlings next spring. Its small white flowers attract a host of beneficial insects—ladybugs, lacewings, and parasitic wasps often nest in the debris beneath leaves, hunting cabbage worms, aphids, and flea beetles. This predator activity benefits nearby container crops, creating a natural mini-ecosystem right at your entrance or patio. Just ensure consistent moisture—bok choy’s shallow roots dislike drying out, which can cause leaf curling. With that bit of attention, buckets of bok choy deliver crisp, mild greens nearly year-round!