Crop rotation question.

[Rabidbun]

Well, I've been trying to work out what to plant next year and I've come up with a slight problem that I need folks' advice on.

This year I planted alliums amongst everything else in all three beds, as I had a lack of plan, a lack of info and didn't realise that this could cause a problem with diseases for future allium planting. Having found all this out since then, I have been trying to work out what I should plant where next year.

I don't think I can avoid planting the same type of crops in the same place two years in a row but I wondered if the following plan would at least minimise any possible disease/growing problems or if I need to amend it?

I also have a similar problem with potatoes. These are grown in pots at the moment and I have been planting them for the last couple of years in the same soil. Would planting other crops in the containers over the winter period count as a rotation of sorts and thus help avoid disease for next year's potato planting or is this more based on time span between potato crops? I would also like to get a winter crop of tatties in a couple of the pots this year, but I fear that this also may be pushing it in the same soil?

Bed 1 (1m x 1m)

This year: Third beans, third chard, third celery and leeks and garlic around the edge of the bed.
Next year: Two thirds garlic, one third red onions (october planting).

Bed 2 (1m x 1m)

This year: Third parsley, third broccoli, third onions and garlic mixed.
Next year: Third parsley, third celery (to avoid the same ground as the onions and garlic if this is enough given that it is still in the same bed?), and the rest salad veggies.

Bed 3 (1m x 1m)

This year: Third parsley, third onions and garlic mixed, third sweetcorn.
Next year: Beans (climbing), probably a mix of salad leaves and possibly some broccoli.

Potato containers

This year: Potatoes.
Winter crop: Mizuna, turnips and purple sprouting (and possibly two out of nine pots of winter tatties).
Next year: Potatoes.

[Capsid]

Why don't you plant the onions, garlic and leeks in the same bed rather than mixing them up? You won't avoid planting alliums in the same bed for next year but then you will be able to rotate with 3 beds thereafter.

For the spuds in containers, I'd empty the old soil on the beds and use fresh compost each time.

[SarzWix]

Planting something different in the pots over winter and then planting potatoes again next year doesn't count as rotation, no. As Capsid says, the soil could be spread on your beds and fresh compost/soil used next year.

Again, as Capsid said, keep your onions, garlic, leeks and any salad onions etc in the same bed, then move them all together to the next 1mx1m the year after. Planting some in the space they've been in this year will be unavoidable for next year, but you'll get away with it as long as this year's plants have been healthy.

[Rabidbun]

Will dedicate a bed to alliums then each year, thanks both, much 'preciated!

And doh. Might have to stop growing tatties for a year or so to give the soil a chance to get rid of any nasties then - alas the raised beds are pretty much full already of compost (would have been heaped a bit too if I hadn't had to throw away four growbags worth of soil due to grey mould after last year), so am kinda stuck with the soil in the pots for the duration. It would also cost around £45 quid to refill them, which might put the tatties up there with gold for weight.