In these days of blistering heat, oppressive humidity, and drought, I am compelled to report on Sissoo (or Brazilian) spinach, which I had the pleasure of starting to grow a year or two ago. No, it isn't a spinach, but it's a delicious perennial green that laughs at heat. It's an Alternanthera. You don't seed it. The only way to start it is with plants or cuttings. I got myself a couple of small mangy plants, which have expanded, sort of like ground cover, into a couple of yards of product. Almost invasive. It easily grows in almost no direct sun, and seems pretty drought resistant. I've never seen a single brown leaf. Nobody eats it (no holes in the leaves), though I do have plenty of cabbage worms that go after everything else. That may depend on your local pest population, though. Seems to be immune to any fungus infection as well. I rarely throw any fertilizer on it. My minor complaint is that the leaves are pretty small, so if used in salads, you use whole leaves. The leaves are rounded, which I find is nice for eating, unlike Okinawa spinach, which has pointed leaves. Dark green and somewhat crunchy. I use it along with Malabar spinach, which has the same heat and drought tolerant properties. Thank goodness for tropical greens! Be aware, though, it is completely frost intolerant. Since it is perennial, it needs protection in the winter.