Great! Have you considered adding that text as comments to the Parent Page for Brassicas?
Brassicas (Brassica)
>> about six weeks before the last frost.
In spring, I have only direct-sowed Bok Choy, and mostly I waited until after frost to start. When would you say is a good date for starting it indoors in spring?
I'm afraid to start Bok Choy 6 weeks before last frost, because they germinate and shoot up so fast. Also, I'm more timid than I probably should be about Bok Choi's frost tolerance and plant-out date. I guess that varies from variety to variety.
But I guess if someone's spring is shorter than mine, starting indoors 4-6 weeks before last frost would be necessary to get mature plants.
From reading, spring Chinese cabbage might be started indoors 4-6 weeks before the average last frost. I know they are fussy and will have narrow windows for success in many places.
