Back in May, I posted about my experiments with trying to kill delospermas. I planted out entire collection out during the summer of 2012, in our native sandy soil, but no special conditions like raised beds or anything else. My goal was to see what THRIVES here in Michigan with no extra effort, so I just plopped two plant of each variety in the ground and waited to see what happened.
In May, I reported that 11 species had come through the winter just fine -- over half of what I had planted out to begin with. Which was more than I expected. I was surprised to find that over the summer many more bit the dust. We're now down to just 5. We had a summer that was slightly on the rainy and cool side, but nothing extreme. I never would have guessed it would kill so many delospermas. But it has, leaving me with a narrowing field of the very best delospermas for the Michigan garden. Here are the survivors, with pictures of what they look like today, with my comments:
Delosperma ecklonis v. latifolia
Delosperma deleeuwiae (possibly actually D. neill)
Delosperma 'Lesotho Pink'
Delosperma nubigenum (this name may be incorrect...)
This is one of my favorites. The plant stayed quite small and tight, barely getting to 4 inches from the original 2 inch plant, which means this would be terrific in a rock garden or container garden. Yellow flowers, which is always a nice change from the typical delosperma magenta, and the foliage is taking on this lovely red flush as we're getting into fall. Apparently turning red in the fall is normal for most delospermas in sunnier climes like Denver, but here, where fall is cloudy and rainy, it is the only one really worth looking at.