Sprouts with hollow stems

My brussels sprouts were very poor this past season and when I dug out the roots yesterday they all had hollow stems. I have never seen this before, does anyone know what it could be?

possibly, cabbage stem flea beetle thats all i can offer

possibly, cabbage stem flea beetle thats all i can offer

Thanks for the reply, I will look that one up.

Sorry for the bother penance!

To be honest I don't think I'd be suprised if the stems were hollow.

They're normally very pithy in the centre at the best of times. So would suspect that's fairly normal.

I know the stems on some kale I pulled out several weeks ago were certainly not solid in the centre as I recall how they collapsed when I was smashing them with a hammer prior to putting them on the compost heap.

I think its possibly just coming to the end of its time. My cavolo nero was the same.

i remember hearing something about that on ''donna's square foot garden'' on youtube its something to do with a deficiency in the soil...

no i just remember her saying that she was glad that there wasn't a hole in the middle of her brocolli that it would mean somethings wrong with the soil... Maybe its time to call in google

Googled it.

Can be a Boron/Nitrogen imbalance, calcium may be implicated in the process as well.

Can also be caused by rapid plant growth.