[jsmzxc]

I have white rot in my allotment

However I do have a bed which I dug out two spades deep last year and used the soil to raise other beds. I filled 3/4 depth with horse manure and top 1/4 with a mix of cheap (Wickes) compost and sieved topsoil. This year I grew courgettes in that area, too well.

Has anyone any ideas as to whether I could plant my overwinter onions and garlic in this area or would it be too rich.

It is extremely well drained as you can imagine.

[richyrich7]

I'd give it ago if it was me, I don't think the rich soil would be a problem for them.

[gobs]

I'd agree, rich(i)ness is no problem for alliums.

About the white rot, you'll see, hopefully you only need about a foot plus away from infected ground, but that's only one of these useless theories, hope it works though.