This daylily has really done well in my zone. I am surprised at its hardiness. Many similar blue eyed ones like Elfin Blues, Here's To You Bill Robinson, Mississippi Bill Robinson, Bumblebee Blues, Dejas Blues, that I got have struggled to grow in my garden. Some have never bloomed and some are still either double or single fan after more than 3 years. However, Moon Sworn has bloomed well and increased well in my garden. I highly recommend this blue eyed daylily for zone 6. Not sure if it does well in zone 5 or less though.

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