One of my wolfiis slightly opened its flower today (cloudy and cold weather), another wolfii will open its flower in 1 or 2 days. I hope to be able to pollinate the flowers.
It is quite remarkable, that they flower at almost the same time as Marco's wolfii. In my greenhouse, M. wrightii, meridiorosei, barbata all flower well before M. wolfii, actually these plants have almost finished flowering.
I had several more buds on my wolfiis in the last few weeks, but these 2 buds are the only ones that will become a flower. All the other buds shrivelled (I wrote about that problem a year ago). It looks as if M. wolfii needs plenty of water in order to prevent the shrivelling of the flowers, and perhaps a less sunny position (less heat) might also be beneficial. I do not know under what conditions the plants grow in nature (covered by grass?) and under what conditions they flower in nature (during a period with much rain?), that might be helpful in order to prevent the buds from shrivelling. Next year I will experiment a little more with my plants.
Wolter ten Hoeve, Assen, The Netherlands.