Friend's advice for a winter veggie garden

Judith is the friend who has an amazing winter veggie garden. When I ask her about planting for winter, this is her advice:

Start thinking about winter now, yes. I know we have just finished but winter veggies take a long time to grow. I have just started the rotation system of O R B. This is the order that plants follow each other. Where the Brassicas (Broccoli, Caulis, and Cabbage) have grown, you plant others (lettuce, onions/leeks, silverbeet, beans/peas). Where the others have been you plant Roots (carrots, parsnips, potatoes) and around you go.

Sometimes you have to "fiddle the books" but I am sure you get the general idea. And I am only just sorting this one out, but you need to get the seed in so that the plants are big enough to into their permanent position in January/Feb/March.

Broad beans - almost ready now get planted in April/May.

Lettuce is short (2-3mths from seed)crop.

Brassicas - October is the last month for planting seed unless you want to battle with the white butterfly over late December - May. Sow seed of these in Jan/Feb to eat June/July.

I could go on. I am still observing and experimenting and should keep a diary. Need to plant corn seeds in pots this weekend to plant out in 2-3 weeks. I do the next sowing when I have transplanted these so get 2 - 3 sowings a season. You need at least twenty plants for a good harvest so room becomes a factor.