Canton Bok Choy White Stem Heirloom Vegetable SeedsBrassica rapaListing is for 1 packet of approximately 100 seedsThis is my favorite bok choy / pak choi variety that I grow in my own garden. It has thick, crunchy, juicy white stems. Leaves are dark green and shiny. I like to harvest single leaves instead of the whole plant so it will continue growing and producing more leaves. The bees love the yellow blooms if you allow it to go to flower. It reseeds easily all over my garden. This variety appears to have some heat tolerance as it was growing well even in the month of June here in Florida. I say this because all my other Asian greens, lettuces, and spinach varieties don't grow well here in Florida once May arrives. They also have a pretty decent cold tolerance and have survived without damage in my garden when temperatures hit 30 degrees Fahrenheit. Ideal Growing Conditions Sun: Does best getting 6 hours of sun a day. Grow in partial shade in hot climates. Water: Keep the soil consistently moist Fertilizer: Add some blood meal into the planting hole before transplanting or work some into the soil before direct sowing seeds. This one time application of fertilizer should be enough for the entire growing season. When & How To Sow Seeds: For a fall/winter crop: Direct sow seeds when you start planting your fall garden and continue throughout winter. Cover with frost protection if temperatures are expected to fall below 28F. For a spring crop: direct sow after all danger of frost has passed or can start in seed trays/cells 4 to 6 weeks before your last spring frost date. Sprinkle a few seeds over the soil surface, pat down, cover with 1/4 inch of soil, and water in. Can follow square foot gardening guidelines to space 9 plants per square foot, or plant each one 3 inches apart. Germination: 3-10 days Days To Maturity: 50 days after direct sowing the seed How & When To Harvest: Harvest once the bok choy plant sizes up and forms a rosette shaped head, but before the central flower stalk appears. Cut the bok choy off the main stem with some scissors. Common Diseases: The most common disease is downy mildew. It thrives in cool, wet conditions and can spread rapidly, causing yellow spots on the leaves that eventually turn brown and die. Proper plant spacing to improve air flow helps. Spray with 1 cup of hydrogen peroxide per gallon of water every 3 to 5 days until you notice the spread has stopped. Common Pests: Critters like rabbits love to munch on the plants. Protection from small animals might be required. The most common pest when growing bok choy is aphids. Use a strong spray of water to dislodge aphids from the leaves. For more severe infestations, spray with organic insecticidal soap or spinosad. Do I have a YouTube video tutorial on how to grow this? Yes, watch it here: https://youtu.be/H3IgM8ihJfk Additional Tips/Information: N/A