Maternut..Wish we were neighbors. I have more COT's than I know what to do with. Can't toss them, but they sure take a LOT of room. When they were purchased, all were babies..Guess I didn't think they'd someday grow larger. lol. Larry. Cold shouldn't harm COT's, but those I recently brought indoors, 'after several nights @ 35F/1.7C, a couple nights dipped 32F/0C, a good number of leaves dropped..Some leaves had frost-bite. But like you said, Euphorbias are tough. Unfortunately, not tough enough to be outdoors for long periods at 32/0. Wonder how OP's COT is doing.

Gorgeous! I've never seen such an awesome collection of different kinds all in one place! They're just lovely. A friend of mine has the cutest little Crown of Thorns, which she neglects like crazy. And still, it rewards her with little red flowers all year round! That was the first time I'd seen that plant. I've found a seller on eBay who has both of the kinds I've been looking for: one with tiny red flowers, and one with larger creamy yellow flowers. I'm traveling a bit over the next month, but once I'm home for good, they're MINE. :)

Hello! Yes, I have noticed this very thing on one of my plants in particular. During the Winter, the bracts are pure yellow, but during the Summer there is a pinkish tinge to the outside of the bract with yellow in the center. Josh

Thank you Nicholas and Manuel. I used to have a lot more in ceramic pots but now those pots stack up in my shed and behind the shed. Many of them in plastic now for easy moving. (I have only 10 feet backyard for my desert rose. I let go most of them. It was so hard to let go after I had them for so long. Marie