Gardening a cyclic affair. I see I write about foxgloves every few years at this time of the season and here we are. It is this time of the year, I get around the garden to pull out the nasty pink ones.
There are about 20 different species of foxglove and we have tried a few of the different ones, particularly in honey and soft yellow shades but really, it is only the common Digitalis purpurea which lasts the distance. The other species are much pickier and won’t naturalise for us.
What is it I dislike so much about the pink form? It really is the colour and the status of the plant as a countryside weed, though I think I would be less worried about the weed aspect if it was a prettier colour. I do, after all, grow wild fennel in the summer gardens. That murky, hard pink is just not a colour I like. I like it even less in a garden situation because I feel it lacks any refinement or charm.
The whites and pastels are no less thug-like in their growth habits but I like the height and the flower form and I am fine with letting them seed around in a gentle sort of way. We have a patch of self-sown seedlings growing in a small gravel heap – the contents of the capillary beds back in the days when we had a nursery on site. It is quite handy having a stash of fine gravel to use in some situations and it is not doing any harm where we stockpiled it. The foxgloves are happy to grow in straight gravel.
It is because I keep track of that patch, that I have worked out that the advice to cull any seedlings that have red ribs to the leaves if you want to get rid of the pink ones and keep the whites and pales is not in fact accurate. It may be true that all dark pink ones have red ribbing on the foliage but it is not true the other way round – so, too, can some of the whites and pales. For a brief while, I thought that only the white foxgloves with freckles or spots inside the thimble flowers had red ribs but no, so too do some of the all whites with no freckles.
The white foxgloves are simply a variant of the same species, Digitalis purpurea, but the dominant gene is clearly pink so if you are not vigilant on weeding out the stronger pink forms, you will end up with a dwindling number of white seedlings. You have to pull the plants out and remove them from the site as soon as the colour is obvious. If you leave them to flower, the bees which constantly work these blooms will transfer the pollen from one to another so the genes in the seed will not stay the more desirable white.
I also pull out plants which are clearly pastel forms of the same pink parent rather than the peachy hues of some I have and I pull those plants that think they can outwit me by opening white and then changing colour to pink as the flowers mature. Were I truly dedicated to the genus, I might start selecting for different habits – more compact or with larger sized thimbles for example – but I don’t love them enough for that. I am fine with keeping to pure whites in the Iolanthe garden and pastel peach in the Court Garden.
If I lived in a drier climate, I might expend the same random energy on lupins – another plant that hovers on the margins between being a delightful garden plant, wildflower or even noxious weed. But lupins don’t like our high rainfall, high humidity conditions so I must make do with foxgloves.