|Flower of Butterwort, Pinguicula grandiflora, on my balcony in Hayes. 12 May 2013.|
In January 2012 I bought a few small hibernacula of Pinguicula grandiflora. These are the form the plant takes when it hibernates in winter, like little green buds. It makes a bunch of little offshoots during the year, and these are what I bought, in their winter form.
They grew, and then they disappeared, only halfway through the year. Well, I had seen some Sundew species do something like that, so I thought they might still be viable. I put them out on my balcony and kept them wet. And waited. Squirrels dug them up, and some of them disappeared completely. I was not too hopeful, but when I looked under the surface this spring I found lots of little hibernacula. This time I just left them outside, though I put a few into different pots, some of them indoors.
|Butterwort, Pinguicula grandiflora, on my balcony in Hayes. 12 May 2013.|
Now they have all come up, and the ones that are outside are all flowering! So the answer to cultivating these is: leave them outside, keep them wet, keep the squirrels off them, but otherwise ignore them.
|Butterwort, Pinguicula grandiflora, on my balcony in Hayes. Detail of leaf with trapped insect. 12 May 2013.|
Wikipedia says the flower stems are long so that pollinators are kept well away from the leaves and don't get eaten, but I notice that the flower stems of mine are also covered with sticky hairs, so I am not convinced.