Took a notion to it, did you?
I only grow it in pot loads but I think Shadow 57 grows more, I know he posted some excellent photos of the processing.
It seems to grow best if sown thickly, makes for long stems, stretching for the light....I aim for 4 seeds per square centimetre in the pots usually in late February early March, and I pull it up from late July through until September. It needs to be kept damp while growing, if the pots dry out it sets seed and dies before the stems are as long as possible. I believe it likes moist, fertile soil in field or garden.
I only grow enough to learn how to process and show the stages involved. I use so much of the fibre for workshops that I buy it in.
Cheers,
Toddy