|Pasta tossed with olive oil, sugar snap peas, red orach, Italian oregano and baby Genovese basil|
Orach (Atriplex hortensis) has been cultivated for hundreds of years, and it's certainly a beautiful plant. Also known as Mountain Spinach, I think it's one of the few leafy red vegetables that holds its color when cooked, as you can see from the photo above.
Nonetheless, I don't see myself growing it again. Why not? The seeds germinate unpredictably. The seedlings are maddeningly temperamental -- wilting, recovering, wilting again - they're like Victorian ladies having fainting spells! The plants did eventually get a few feet high, but there are not that many leaves per plant (at least not on the ones in my garden) and the leaves are not particularly large, and besides the taste was rather bland.
So all in all, besides the appearance, there's not much I can say to recommend orach. It might be a bit more heat-tolerant than spinach, but I'd rather use the garden space in the future either for true spinach (individual plants yielded far more leaves) or lettuce, which is still hanging touch in my garden thus far in late May and has yielded many, many salads.
Of course, it's always fun to grow something new and unusual, but there are many other rare leafy greens to try growing besides orach -- such as tatsoi, arugula, mibuna, mizuna, etc. etc.