By Bobangles
Oxfordshire,
United Kingdom 
When should i harvest Jerusalem artichokes,2metres tall, no flowers yet.
18 Jun, 2011
Answers
Thank you Moonx
18 Jun, 2011
You're welcome Bob
18 Jun, 2011
When they do flower remove the buds as it encourages a better tuber growth. Then wait for the leaves to turn yellow and die back before lifting in late autumn.
18 Jun, 2011