Plant late-winter, early-spring. While you can plant/harvest all year, they prefer the colder months
William Massey variety does best
Well-drained half-compost soil, enriched with sulfur (via gypsum). Mulch after they reach 6cm with pea-straw
Beans prefer a warmer temperature
Long John is a good variety
One plant produces plenty for a single person.
Plant in pots indoors (16C), 6 weeks ahead of time. Transplant into garden.
Prefers a warm dry summer growing season
Money Maker is a good variety
Nadine is a good variety
Get potatoes a 1 month early and chit them indoors. Put eyes-up in egg cartons and store in a sheltered, 10 degree place with plenty of light.
Plant 10cm deep, 25cm apart.
Mound up dirt around growing potatoes, to protect tops of tubers from light. You should cover 50% - 75% of the stems and lower foliage.
You can keep partially burying them if you wish to get more potatoes — my grandfather used to grow them in a barrel, and he'd have potatoes from top to bottom. You can bury with sawdust too, or peat-based potting soil, as long as you have soil at the bottom.
If you slice the seed potatoes to get more plants per, let the cut edges dry for a few days or apply dusting sulfur, otherwise they can rot
Plant in pots in sheltered region, 6 weeks ahead of time. Transplant into garden.
Grows sweetest during cool seasons, but with at least 6 hours of light per day.
Well drained, rich soil, fertilize often — they are heavy feeders.
Mulch — Keep evenly moist — if they get too much water at once they will split/burst.
Avoid acidic soil, keep pH > 6.8, or club root disease is likely.