Sad to say I am too lazy to grow vegetables, but have heard that many of them will find a way to come back each year on their own. Which ones could I plant once and most likely not have to plant again? Just giving them a 20x20 square to do what they will.
List So Far- From below posts-
Yellow Pear Tomatoes
New Zealand Spinach
Arugula and Cilantro
Yeah, asparagus is great and takes very little care once established. Tomatillos and purslane just keep reseeding themselves in my garden as do a number of lettuces.
I have 2 half barrels that keep producing a lettuce strain I haven’t planted in 5+ years.
I planted yellow pear tomatoes about ten years ago as they are one of my favorites. They have come back every year since (re-seeding) though the fruit is less of a clear yellow than they once were. I think they’ve hybridized with a black cherry tomatoe somewhere along the line.
Try scallions such as evergreen hardy white or white spear. When grown as a perennial, they’re at their best when they first come up in early spring, before they flower. If you combine them with Egyptian walking onions, you can have green onions for most of early-mid spring through early winter.
I would caution, though, that perennial vegetables still need a fair amount of work. Some of them are Ok to leave in the same spot for a while, while some do better if you move them around (eg sunchokes). Many of them will need to be divided every few years. All will need weeding, mulch, and watering, plus compost. Asparagus is very sensitive to weed pressure, and has a few serious insect pests. If you have any female asparagus plants, volunteer seedlings can easily become your #1 asparagus weed. Tomatoes and tomatillos will reseed themselves, but they will require a lot of thinning, and can build up bad disease pressure if grown in the same place year after year.
All that being said, I think perennial veggies are generally much easier than most annual vegetables and well worth your time. Just be sure to have realistic expectations.