A organic prevention of club root?

[4390evans]

Apparently mare's tail can prevent club root in brassicas.

Anyone heard this before?

You boil it up dilute it down and feed it to your brassicas. I haven't got this problem but thought those who have might want to experiment.

[Greenleaves]

Old wives tale let alone mare's tale Jen

[Snadger]

I have managed to get rid of clubroot, and nearly get rid of white rot on onions on my plot by good cultural practices.
The only use I know of for mares tail, is as a pan scourer because of its silicon content.

The oxalic acid in rhubarb leaves worked for me on my other plot though.