10 Vegetables you can buy once and regrow forever in your home garden

Onions
The great thing about onions is not just that they are tasty, and ridiculously versatile, but they are incredibly easy to grow. Chop the root end off of the onion and plant it outside. Onions will grow in almost all climates, so you just need to wait until you have a fully-grown new onion to eat.

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