I would say that it has to be the one to the left as it's more red...but my Maraschino Cherry is more 'red' than that and cameras sometimes don't catch the true color. I'm sure that Rich can tell you as 'Maraschino Cherry' is one of his introductions.

Hard to tell, but as wcgypsy, said the one on the left is a lot closer.

Did you get these from a mail order nursery?

yes, the one on the left from high country gardens. the one on the right from plant delights

the one on the left is darker than i expected, but the hummingbirds liked it

There is a mix up somewhere, since I sent the plant directly to both nurseries. I'd have to look at the foliage to be sure.