If, God Forbid, I should have to choose just one warm weather plant to grow it would probably be Jute.
It tastes good raw or cooked, has a nice texture, is attractive, germinates fast, grows fast, and is tolerant of most everything. It can be eaten as a microgreen or left to mature for use in soup or salad. The diminutive flowers are good to eat and so are the green pods.
These quads (the name I have designated for my 4-part planters) allow me to water and drain the plants easily and harvest at eye-level. I make them from dollar store waste bins, and the reason I favor them over other planters is they are light enough to make the plants portable, deeper than most small pots, provide excellent drainage, are inexpensive, and they give my garden a uniform appearance.
Instead of sowing new seeds at intervals, too keep these plants growing, I periodically take stem cuttings. They root in water in just a few days and the original plant is cut and come again, so it sends out new branches to replace the one that are cut off.
To prepare the cuttings for sprouting, I cut off all the side shoots and large leaves, which can be eaten right away or frozen for later use.
Here are some of the leaves trimmed off my cuttings and sliced to add to a hotpot:
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