Pak Choi gone to seed!

Maybe keep them a bit shaded and well watered. Not suprised they've bolted, as there has been a lot of hot sunshine lately.

Mine bolted too.  Not only the outside lot, but the ones I had in big pot in my bubble shaded greenhouse, which hasn't been hot at all.  I will wait for autumn before sowing any more then! 

this site says sow end of July - to late August, which seems about right in my experience 
http://www.seedtoplate.co.uk/vegetable_growing_guides/plots/all/pak-choi/

After years of trying I've given up on Pak Choi. Tried sowing and growing at all times of year and in all conditions and it always bolted. I guess gardeners just have to face the fact that some things just don't work for them.

Mine had flea beetle and also ran to seed, but I think they went in too late and have been faced with this hot spell. Next year I will sow earlier.
Would also like to point out that I bought plants from the garden centre and not knowing that much about pak choi thought it was the correct time to plant because they were available to buy. Garden centers are guilty of doing this all the time often selling veg plants at the wrong time.

jazz

Growing Pak Choi is very hard work in this hot weather, firstly they like a very rich soil, they also like to be watered a lot. unless you can give them what they wan't they will go to seed, Pak Choi has a small root system unlike other salad crops, so if the ground dries out the plant becomes stressed and will run to seed. I grow mine in the float tray system where I can meet most of the requirement that the plants requires, plus growing it at a height of about 3 ft above the ground stops any flea beetle damaging my crop. Mine are floating away quite happily at the moment and are being shaded by my spring onions. If you have any problems with growing them I would recomend planting them in your compost pile and keeping them well watered