How to Grow Bok Choy in Containers
Bok choy is a good-sized plant. To grow potted bok choy, begin with a pot with a depth of about 20 inches (50 cm.) and a width of at least 12 inches (31 cm.) in order to grow one plant. Double the width of the container if you want to grow more potted bok choy plants. Fill the pot with fresh, lightweight potting mix containing ingredients such as finely chopped bark, compost, or peat. Avoid regular garden soil, which doesn’t drain well. Bok choy doesn’t tolerate soggy soil. Mix a small amount of dry, organic fertilizer to the potting mix. You can start seeds indoors four to five weeks before the last frost date in your area, either in the pot or in seedling trays. Alternatively, save time and purchase small plants at your local garden center or nursery. Either way, allow 6 to 8 inches (15-20 cm.) between each plant. Note: You can plant a second batch in later summer for a fall harvest.
Caring for Container Grown Bok Choy
Place potted bok choy where the plant receives at least six hours of sunlight per day. Afternoon shade is beneficial if you live in a hot climate. Water bok choy regularly and never allow the soil to become bone dry. However, avoid overwatering as the plant may rot in waterlogged soil. Water carefully at the base of the plant to keep the leaves as dry as possible. Cover potted bok choy with a net if pests such as cabbage loopers or other caterpillars are a problem. Aphids, flea beetles, and other small pests can be treated with insecticidal soap spray. At harvest time, remove the outer leaves and allow the inner part of the plant to continue growth. This cut-and-come-again method of harvesting allows the plant to produce leaves for a longer period of time.
