About 60% of my garden planting consists of self-seeded plants, which might seem surprising. I’m particularly focusing here on my dry garden but the same applies elsewhere. So how do you keep an acceptable aesthetic when plants put themselves here or there, without consultation?
I find that a different attitude to that of the “traditional” gardener is useful, if not essential. I like the dynamic and surprise of the shifting combinations and patterns that occur. Very few of these plants are annuals, most are short-lived perennials, with some grasses, herbs and shrubs. With a few exceptions, these are plants I have introduced to the site over the years and which have found their “happy”.
Walking around this morning, I made this list (in no particular order):
Fragaria fresca – alpine strawberry
Euphorbia characas – various forms
Foeniculum vulgare purpureum – purple fennel
Pentaglottis sempervirens – green alkanet
Cynara cardunculus – cardoon
Galactites tomentosa – annual
Lavandula (hidcote or similar)
Rosmarinus officinalis (Salvia rosmarinus)
Melissa officinalis – lemon balm
Valeriana officinalis – common valerian
There are others, but these are the usual suspects. I have a range of about 15 shrubs and sub-shrubs that form a more static framework and those listed seed themselves around and between at will. I have to be ruthless and remove plants from where they are not wanted, and that’s always hard (they often end up in my nursery). And of course, there are many other self-seeders which we would traditionally call weeds: veronica, greater celandine, field forget-me-not, buttercups etc. They all have their own beauty and I could never manage to eradicate them, even if I was of a mind to, which I’m not (bindweed is another matter).
So form structure with your shrubs, herbs and other prime perennials, and let the remainder shift around; they’re not annuals (apart from the Galactites), so the scene doesn’t change radically from year to year, but over a slightly longer cycle. This works well for a mixed or herbaceous border, but is especially well suited to a dry, gravel garden style, where there are few or no border edges to maintain.
Some plants can be overwhelming and a few invasive, so best avoid those. I now severely limit the amount of Phlomis russeliana I have in my borders; stunning though it is (the winter seedheads are wonderful), it is a thug and will swamp out lesser plants and it produces a copious amount of seedlings.
Gardening like this is more of a co-creation; you are working with nature and not entirely in control. There are many benefits to this, not least the surprise of an unexpected combination, or the sudden appearance of plants you never knew set seed. This is a great example of adaptive planting, where plants are fully attuned to the climate and local conditions. Give them a chance and see what happens!
I came across some interesting vertical greening at Borough Market recently, in a glazed atrium/entrance space called the Market Hall which served as a place for people to relax, sit and eat.
Hop Plants in containers
The plants were obviously chosen for their connections with food, so the climbers were hops (used mostly for beer making) and there were an array of edibles in pots which spiraled up around metal columns; mind you, I wouldn’t like the job of watering, as there did not appear to be any automatic irrigation fitted. Olive trees were fitted into various seating units.
It made for a lively space and was an created in conjunction with Natural England and Bankside Urban Forest. I will be interested to see how the hops will do over time, not being in a fully outdoor environment, and I imagine they will still lose their leaves during winter, as it is (I presume) an unheated space. It always has to be accepted that plants used in close urban environments might be shorter-lived and require more care than in more natural circumstance, but I think that just goes with urban living.
A great initiative, let’s see more such spaces where people get close contact and interaction with plants.