About Baby Bok Choy: Baby bok choy is a popular Asian green and it is becoming increasingly popular for home gardeners. Baby bok choy is easy to grow and has great nutritional value. Baby bok choy takes 30-45 days to mature, and can be grown in majority of the growing season. Baby bok choy grows best under cool condition, excessive heat causes bolting. There are many varieties of baby bok choys, selecting the right variety for the approporiate growing condition is important.
Directions for Growing:
1. Planting Bed Preparation: Prepare the planting bed by adding 3" of compost and mix it into the soil. Lightly scatter a small amount of all-purpose fertilizer and work the it into the soil. Baby bok choy is grown mainly for its leaves and stems, so it is important to provide adequate nitrogen. The extra fertilizer you add prior to planting will usually do the trick.
2. Direct Sowing: Baby bok choy can be sown in a wide range of soil temperature, from 40-75°F. Seeds can be sown in shallow furrows or scattered, cover the sowing site with 1/2" soil. Set the water sprayer to "fine mist" water again. Check daily, water when necessary until seeds germinate. Mixing a variety of lettuce to sow together is a good idea, they will get more variety in your salad.
3. Growing Baby Bok Choy in Trays: Baby bok choy can be started in trays in the greenhouse, however, this does not offer much advantages. Because baby bok choy grow very fast, when transplanted the amount of time it takes for the plant to recover is offset by the extra time it gained by starting the seedlings in the greenhouse. Some dwarf variety of baby bok choys can be grown entirely in pots. Because of their size, 4" pots can provide adequate space for the entire life cycle. An advantage for growing The trays can be kept in a protected area when the weather is too harsh to grow them in the garden, thus extending the gardening season. 
4. Caring for the Plants: Baby bok choy is a fast growing vegetables, watering is one of the most important thing to grow baby bok choy. Thin plants to 2-3" apart, using the thinning for cooking. Thinning is important because without proper spacing the quality of the baby bok choy will suffer. Water the baby bok choy frequently to allow the fast growing of the plants. If the leaves start to turn yellow, apply more nitrogen fertilizer.
5. Pest control: Remove weeds timely, this can avoid weeds compete for nutrients with the baby bok choy. Cover the baby bok choys with floating row cover can keep the bugs away, preventing insect damage without using chemicals.
6. Harvesting: Harvest the baby bok choys when they are 5-6" tall if ideal. They should be tender and succulent. After harvesting the baby bok choy, soak them in cold water, drain and keep in a plastic bag in the refrigerator.