Winter gardening in Spring??

Not quite. What vegetables might you expect to be growing in winter? Not much one might say, but really, there are a lot more than we think. I visited a friend's garden, and the vege beds were packed with winter growth. It was a beautiful sight. Very encouraging too. This is Palmerston North we're talking about.
Apparently growing winter vegetables requires a bit of advance planning, at least 4 to 6 months ahead of time. This is done when summer gardening chores are also at their peak http://westsidegardener.com/quick/winter_veggies.html. Below are some vegetables that we could be eating from our garden in winter...the months are an estimate...I haven't done most it myself but this is the coming winter project - I know, I know, spring has barely started, but...

Do let me know if you've more winter vegs to add to the list and suggestions for winter gardening...

Some of more slow growing winter vegetables are: (6months ahead)
Leeks (sow in Nov for planting in Jan)
Celery (sow in Nov for planting in Jan)
Brussels sprouts (sow in Jan/Feb)
Cabbage (sow in Jan/Feb/March/April/May)
Broccoli (sow in Jan/Feb/March/April/May)
Cauliflower (sow in Jan/Feb/March/April/May)
Chinese cabbage
Parsnip

Some faster growing winter vegetables/herbs are: (3 months ahead)
kale
collards
kohlrabi
Chinese cabbage
winter carrots
silver beets
parsely (all year round)
snow peas
peas
sugar snap peas
potatoes
Broad bean (sow in April/May)

Fastest growing winter vegetables are (1 1/2 months ahead)
Lettuce (all year round)
winter spinach
radishes (all year round)