The message
from Janet Tweedy contains these words:

In article , Janet Galpin
writes

Yes, there's quite a variation in height. The write-up of the RHS trials
is useful and for most AGM varieties gives details of height or growth
habit:

http://www.rhs.org.uk/plants/documen...prouts2005.pdf

Janet G


Um yes (hello Janet by the way) I used the RHS report to grow those that
they said didn't need staking.
They did ..................
--

Hi Janet, I must admit that mine flop over somewhat but the shorter ones
less so. I accept a certain amount of leaning but my veg area is well
out of the way so it doesn't matter too much if it looks a bit chaotic.
It doesn't seem to hurt the sprouts too much. From memory, Oliver, which
is very early and stands well, stays pretty upright.

Janet G