It’s difficult for me to choose one sempervivum as my favorite (except for Oddity, of course… that is always number one) because each one is special in its own way. However, Purdy’s 70-40 has to be near the top of the list.
Purdy’s 70-40 is classified as a medium-sized sempervivum. I need to move most of mine this year… as you can see, they are growing so rapidly and producing so many chicks, their current growing spaces are becoming very crowded.
Purdy’s 70-40 has many different looks. Like other sempervivums, it naturally goes through an incredible range of color changes during a growing season. Soil conditions, temperatures, and the amounts of available moisture and sunlight will also affect their coloration.
As the temperatures drop in the fall, Purdy’s 70-40 starts to lose all of its bright color and becomes a mostly green and very ordinary looking sempervivum. The above photograph was taken in late October.
By the time the snow has melted the next spring, the Purdys look a little winter weary, but after a couple of weeks of sunshine they are already starting to get a bit of color, first in the center of each rosette and near the base of each leaf.
The rosettes also become more open as the season progresses. This photograph, of the same two sempervivums (above), was taken in late April.
The color change is gradual but steady. The pink becomes more intensely pink and the green lightens. Some of the rosettes have a peachy tone… others are almost a maroon. In my gardens, the most beautiful coloration happens from mid-May to probably the end of August.