leaves yellow then turn black and curl

Jerusalem artichoke in tub. The same thing happened this time last year also.

Just before flowers are due, the leaves start to yellow, then blacken and curl. All the tops are still green.

Any idea on the cause please?

 

Hi @Frey ive never grown Jerusalem Artichoke so have no personal experience ....hopefully someone in the Veg thread will see your post and answer.....you could also post your question in the GC Allotment thread maybe - i did do a google search and found this info Why Are My Artichoke Plants Turning Yellow and Dying? hope it helps in some way.......also due to your post i also found out that JA 's are very good for diabetes .....i have an Aunt with this condition , so I can pass this useful info on

 

I dont think Jerusalem artichokes always manage to flower here in the UK and often run out of summer.
The roots will be ok to eat though.

@BeeHappy your link appears to be globe artichokes, a completely different kettle of artichoke.

 

wot am i like - I just told me, Aunt, to eat JA's cos they're good for her .....does that mean she'll have to eat Globe Artichokes
Best get back and put her on nutritional hold till i got me info right ...thanks for the heads up @pete Gawd knows what i could have advised her