PhoenixWench wrote:
Hi - I have gardened for years, but this was my first time growing
kohlrabi. I did it on a whim really - and I believe I left them too
long. Is there any sort of rule as to when to harvest the globes? Is
there a point past which they are inedible?

Mine are now about the size of softballs, or 5" across. One developed
a split, which might just be due to the unprecedentedly rainy cool
spring/summer, but might be a sign of being past prime.

I am in the NY Catskills, zone 5 according to the Arbor Day mapping
site.
Any guidelines would be appreciated so I can do better next year.
Thanks!

Harvest them earlier about tennis ball size. You will get less vege but it
will be nicer. Later they get fibrous and subject to rotting.

David