Bok Choy – Toy Choy

bok-choy-toy-choy-seedsToy Choy is a miniature variety of Bok Choy (also called Pak Choi, Chinese cabbage), growing just 5 inches tall.

Dec 24, 2015 = Day 0.  Plants started from seed (Botanical Interests).  Moistened with dilute fertilizer solution: 1 mL (1/5 tsp) Dyna-Gro Liquid Grow per gallon of tap water.  N-P-K (in ppm): 18-10-11.  pH = 7.0.

Dec 27 = Day 3.  Seeds germinated.  Transferred to grow room, receiving 3 hours sunlight + 5 hours LED grow-light per day.

Jan 2 = Day 9

The photo above is a great example of what happens when seedlings don’t get enough light.  They grow tall and ‘leggy’, reaching for more light, and then they are too weak to stand upright later in life.  I need to provide my seedlings with more light.

Jan 4 = Day 11.  To give plants more light, placed plants directly under a fluorescent light (2-ft. T8 bulb, 17W, 6500k) for 14-16 hours per day.  Plants are only 1-2 inches away from the light.

Jan 7 = Day 14

Jan 8 = Day 15.  Installed plants into 3.5-gallon bucket.  Hydroponic solution composed of 3.5 gal tap water, 7 g MasterBlend 4-18-38, 7 g calcium nitrate, 3.5 g magnesium sulfate, 0.7 mL Dyna-Gro Pro-TeKt, 3.5 mL pH Down.  N-P-K (in ppm): 103-41-168.  pH = 6.0.  Plants moved to indoor grow room, receiving 8 hours LED grow light per day.

Jan 8 = Day 15
Jan 20 = Day 27
IMG_20160210_124021244 (1)
Feb 10 = Day 48
IMG_20160224_164002056 (1)
Feb 24 = Day 62
IMG_20160224_183348996 (1)
Feb 24 = Day 62

Feb 24 = Day 62.  At this point, the lower leaves are turning yellow and falling off at about the same rate that new leaves are forming, so it is time to harvest these plants entirely.

Final Stats: 7 plants harvested.  1.25 gallons of fluid used.  Final pH of fluid = 7.0.

To prepare, chop the bok choy plants, steam for about 5 minutes, then coat with a dressing of olive oil, fresh garlic (minced) and ground black pepper.  Delicious!

IMG_20160224_205156560 (1)

3 thoughts on “Bok Choy – Toy Choy

    • Hi Charles, I have noticed that with some plants, there seems to be a limit to the amount of green growth that the plant can support. Perhaps the root system stops growing, and then as the apical meristems continue to grow, stealing nutrients from those lower leaves, and they turn yellow. This is my operating theory. In the example of the bok choy you referenced, there was still plenty of light, and plenty of nutrients (the plants hadn’t even used half of the fluid yet). It is not the case for all plants, just some. I have grown indeterminate tomatoes in 5-gallon buckets that can grow to be 6+ feet high.


  1. Hey Matt, thanks for answering my question. Since you are doing hydroponics, I think in soil it also happens. It also turns yellow for other plants and sometimes fall off. Experience it in jalapeno.


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