Carefree Sunshine, while an incredible landscape rose, does not maintain near the level of saturation in its yellow blooms as Lemon Fizz. (CS fades comparably quickly to a pale yellow or near white in my hot climate. LF is deep yellow through and through.) Also, CS' blooms and leaves are generally not as large, and in my garden, the flowers seem a little more... for lack of a better adjective... informal. Lemon Fizz is shamelessly healthy and seems to be moderately shade tolerant as well. Lemon Fizz sets hips quite freely (though I cannot yet speak for viability of seeds) and CS does not. CS seems to be more spreading, and LF is more upright. I cannot claim to prefer LF to CS, but they are different. Carefree Sunshine does seem to pump out more flowers for me, and ultimately seems to deliver more impact in my garden.

Do you know if Chamblee Roses was the nursery to introduce it in the US ?