Did You Know
Bok Choy (Brassica rapa susp Chinensis) (AKA pak choi and pok choi) is a cruciferous vegetable and a relative of the large family of garden vegetables in the mustard and cabbage groups. The plant was initially cultivated in China in about the 5th century. In Cantonese, bok choy translates to “white vegetable” which is quite descriptive as most varieties have white petioles (stems).
Types of Bok Choy
Bok Choy comes in a variety of mature sizes from 3 inches to over a foot. The smallest varieties can mature in as little as 30 days while larger types may take up to 60. Most varieties will have green leaves with white petioles but there are varieties with red or purple leaves and some with green petioles. Bok choy also has a lot of close Asian green cousins with differing growth habits and more or less of the mustardy flavor. These include mizuna, mibuna, gai lan, tatsoi and choy sum. I find all these plants attractive enough to be planted in the landscape particularly during the winter months when much of our flower beds are dormant.
When to Plant
Bok choy and its cousins are cool season plants that grow best in our area from fall to early spring. We usually direct seed bok choy once some of the summer heat dissipates in late September to early October. Because the vegetables mature so quickly, succession planting every couple of weeks allows for a long harvest. Bok choy transplants easily so seeds can be started close together then seedlings can be replanted to appropriate spacings. Plantings can continue through the winter (most years) and until about March. Once late spring heat arrives, most bok choi plants will bolt (flower and go to seed) and become bitter and fibrous. Asian Delight and Bopak are a couple of nice varieties to plant that are resistant to bolting and try Toy Choy for a fast mini variety. If your Bok Choy does bolt, know that honeybees will love the flowers.
Harvest and Storage
Bok choy varieties vary widely in maturity, but any variety can be harvested as soon as it is a size that works for your recipe and before it tries to flower. Baby bok choy is super tender and mild while more mature plants will have a bit more flavor and crunchier petioles. We usually harvest the entire plant rather than harvest individual leaves. The cleaned leaves can be stored like other greens in the refrigerator wrapped in paper towels and in a plastic bag for a week to 10 days. Leaves can also be dried, pickled and frozen for longer term use.
By: Michael Vidrine
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