Container gardening is one of the most practical expressions of permaculture thinking: work with what you have, observe your environment, and make the most of every available space. If you live in a cold climate — short summers, late frosts, and long winters — growing food in buckets gives you an edge.

If you’ve ever struggled with thin, tired soil in a northern garden, you’ll know the temptation to reach for a bag of synthetic fertilizer. But there’s a smarter, more permanent solution — one that nature has been using for millions of years. Nitrogen fixing plants are one of the most powerful tools in the permaculture toolkit, and the good news is that many of the best ones are perfectly suited to cold climates.