Thoughts on planting and weeding…

Verbena bonarienisis with Daucus carota, Tostat, July 2019

Forced inside by the massive heat last week, I took to reading about gardens rather than gardening. Also, I am in a reflective state about the garden at the moment as I am noticing the changes from having less ‘arm’ to do maintenance, and I am curious about how this will shape up over the summer. So, picking up Noel Kingsbury’s article about planting density, which I would ordinarily have saved for a rainy day, set me thinking. I won’t recount all the detail as you can pick this up via the link, but working backwards from his reasons as to why more dense planting makes sense made great sense to me. He posits three main reasons for dense planting:

  1. Denser planting reduces the need for weeding
  2. It increases biodiversity, providing more cover and food opportunities for essential garden wildlife
  3. More plants mean more biological activity which supports an effective ecosystem

So, possibly post-hoc rationalisation, but here is what I think is going on in ‘The Mix’ my perennials/grasses/shrub combination underneath the cherry tree at the back. A spot of analysis follows…

The Mix, Tostat, May 2019

This May photograph is a little late to qualify as Spring, but it will do. You can see the massive importance of the wafty Stipa tenuissima, the tall Allium nigrum coming through, and the pink of the Oenethora all work well together.

Just now, early July, those Alliums are still there as seedheads, but the whole look has gone up a gear in height and variation. Crocosmia ‘Lucifer’ is sparking red through the planting, and an annual tall daisy, with many small, white flowers, which self-seeded itself last year, and has really romped this year, has taken the eye up further, whilst the Phlomis longifolia var.bailanica is giving stature with seedheads, and the grey-silver of the Helichrysum rosmarinifolius ‘Silver Jubilee’ (now also seen as Ozothamnus) planted 2 years ago is poking through nicely.

The Mix, Tostat, early July 2019

In mid July, the whole scene will change as Monarda fistulosa, which has just begun to open, will ripple through the scene with warm pink long-lasting flowerheads and will compete as the daisy goes over to take over as the main theme. Later, Patrinia scabiosifolia will come in at early August with electric-yellow umbels shooting through leading to Solidago rugosa ‘Fireworks’ in September.

The first flower, Monarda fistulosa, Tostat, early July 2019

All that I have done is chosen some plants and threaded them between one another fairly closely, allowed a little room for self-seeders, and other than removing the odd dandelion or plantain, I have left it to sort itself out. What I have realised is that between me and it, we have built up a flow of plants that move into the foreground and change the dynamic as time passes- giving way to others as they go. Very little has needed to be removed, and the shrubby elements, the Phlomis bailanica, Berberis thunbergii ‘Maria’, Helichrysum rosmarinifolius ‘Silver Jubilee’ and Miscanthus ‘Gracillimus’ have created the beginnings of a permanent structure as a backdrop.

The other article that continues to set me thinking was Alys Fowler’s article last week on weeding. I always like her thoughtful articles, and this year weeding has taken a back seat in Tostat. I have been surprised at how little this has bothered me, and I have learnt that I have only to wait for plants to grow up and over, thus hiding the interlopers. Then summer heat will finish most of the rest off. I just need to stay calm for the month or so in the Spring when it looks as if all is lost. I am going to go easy again on weeding next year. I adore the combination of the Verbena bonariensis and the wild carrot, Daucus carota and will welcome that back. (see top)

Where I will not go easy is my eternal battle with bindweed. But, 3 years ago, I grew and planted out Tagetes minuta all over the garden where we were under siege from bindweed. Tagetes minuta seedlings have continued to work away since them, and we have a very different garden thanks to them. I have ordered more seed for next year to bulk up the population.

Tagetes minuta still doing battle for me, Tostat, July 2019

Inspiration from 2007…

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The ‘mix’ bit, featuring Libertia grandiflora, self-seeded Eschscholzia, Monarda fistulosa, Gaura lindheimeri ‘Gaudi Red’, Cerinthe major ‘Kiwi Blue’, Berberis thunbergii ‘Maria’, Tostat, May 2018

Three years ago, I tried an experiment.  Could I grow a whole area essentially from seed, or self-seeded perennials, with one or two shrubs added in? The last two years have been a waiting game, but now, I can say that I am on the way.  It was only the other day when reading about the founding of the recently established Königliche Gartenakadamie opposite the stunning Botanical Garden in Dahlem, Berlin that I remembered what had been at the back of my mind as images of how I wanted the ‘mix’ bit to be.  Isabelle van Groeningen works in partnership with Gabrielle Pape, the main force behind the new Königliche Gartenakadamie in Berlin- but it was Chelsea that first introduced them to me.

Isabelle van Groeningen and Gabrielle Pape made a Main Avenue garden at Chelsea 2007- inspired by and strongly evoking the matrix- planting style of the reknowned German plant-breeder and nurseryman, Karl Foerster.  I remember that garden, not in detail, but in terms of the unusual effects it created.  Using plants as singletons or pairings, the garden seemed swarming with plants, but not arranged in clumps, but as a tapestry of individuals who all seemed to get on very well one with another, almost a ‘pointilist’ garden.  Back then, I was only at the beginning of my formal garden design study and it was all completely new to me.  I remember being disappointed that the garden only got a silver medal.

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Isabelle van Groeningen and Gabrielle Pape for ‘The Telegraph’, Chelsea 2007 photo credit: http://www.telegraph.com

This photograph doesn’t quite capture what I remember, the dotted planting of ones and twos of plants in a tapestry effect, but what you can see is the depth of planting and that crammed impression which I loved.  My version is much more clump-formed than matrix planting in the strict sense, but I have encouraged Stipa capillata to self-seed and this has created a wafty movement at about 0.75m high, which I really like.

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The ‘mix’ in early April, dew on Stipa capillata veiling Cistus ‘Gold Prize’ and Libertia peregrinans in winter orange, Tostat, April 2018

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The ‘mix’ featuring Anchusa azurea ‘Dropmore’, spikes up in blue, red spots of luminous Dianthus cruentus, Phlomis longifolia bailanica, Geranium albanum, Tostat, May 2018

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The edges of the ‘mix’, tall flowerheads of Eryngium eburneum, Anchusa azurea ‘Dropmore’, Monarda fistulosa, Cornus kousa, Tostat, May 2018

A key plant, which has take all of these three years to really get going, is Anchusa azurea ‘Dropmore’.  It is a much more intense blue than the photographs suggest and sits a good half metre above the other planting- so it really reaches for the sky.

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Anchusa azurea ‘Dropmore’, Tostat, end April 2018

It is very wafty so I am hoping it isn’t decked by strong winds- always a possibility.  For the past two months, the two self-seeders. Eschscholzia californica and Cerinthe purpurescens have behaved magnificently.  Purple and orange- so good together. Noel Kingsbury has some interesting and de-bunking comments to make about getting holier-than-thou about any one way of gardening,  but whatever else, closer planting helps but will not remove the need to occasionally sort out thugs and reduce competition.  With the ‘mix’ I am stuffing in and also actively managing, not just the plants but also the invaders.  Good news is that a spot of wild carrot is easily removed.

Lastly, I would like to remember Beth Chatto,  who died last week, and a fantastic visit made to her Essex nursery eight years ago on a wet and grey day- she was a one-off.   What a woman.

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Beth Chatto’s inspirational Gravel Garden, Essex, 2012