'Mary's Gold' has been a great performer here for many years. I've had it since around 2000. This past spring, I dug up a big chunk from the clump to donate to our club's public service project - we donated multiple fans of award winning daylilies from our gardens to a public garden here in Roanoke,VA. My clump didn't even miss a beat this summer. The tall scapes and big flowers always get visitors attention here! Yes, even though some say that yellow or gold daylilies are a dime a dozen, you NEED the gold and yellow palates in your gardens to make those purples and reds pop. These images were taken here this summer. Someone asked about the cultivars 'Jerusalem' and 'Golden Hibiscus' in another thread. All three of these are in the same general color zone, but this is IMHO, the superior plant of all three. The other two left the garden years ago - Golden Hibiscus ( not looking but think I remember) was registered with 14" scapes, and the short scapes detracted from the bloom. Jerusalem was a so-so bloomer, Mary's Gold has wonderful plant habits or it wouldn't have stayed here for so long!
I was fortunate enough to meet Harold McDonell back in 2008, and told him then what a great plant his 'Mary's Gold' is. I've seen it in many gardens around the country.