What it needs & gives back
↓ Needs
↑ Gives back
Companions
Courgette marrow
Squash can provide ground cover, suppressing weeds and retaining soil moisture for potatoes.
Garlic
Garlic may deter aphids and other pests.
Common bean
Beans can fix nitrogen, benefiting potatoes.
Cabbage
Potatoes can benefit brassicas by shading the soil and keeping it cool, which brassicas prefer.
Corn Maize
Corn can provide shade for potatoes, and potatoes can help suppress weeds around corn.
Horseradish
Reported to improve disease resistance in potatoes.
Tansy
Repels Colorado potato beetle.
Keep apart from
Through the year
Emergence
Emergence of sprouts from tubers when soil temperature reaches 70C.
Flowering
Flowering typically occurs 45-75 days after emergence.
Fruiting
Berry formation follows flowering, though not all varieties produce true fruit.
Harvest
Harvest occurs after foliage dies back, allowing tubers to mature and skins to set.
Senescence
Foliage dies back as days shorten and temperatures drop, or with the first autumn frost.
Dormancy
Tubers enter dormancy after senescence, lasting through winter until conditions are favorable for regrowth.
Timing is relative to your local season (temperate Northern Hemisphere).