I am currently readying myself for the push required to complete the final round of planting in the new garden.  The outer wrap went in at the end of March to provide the frame that will feather the garden into the landscape and, with this planting still standing as backdrop, I have been making notes to ensure that the segue into the remaining beds is seamless.

The growing season has revealed the rhythms and the plants that have worked, and the areas where tweaking is required. Whilst there is still colour and volume in the beds I want to be sure that I am making the right moves. The Gaura lindheimerei were only ever intended as a stopgap, providing dependable flower and shelter for slower growing plants. They have done just that, but at points over the summer their growth was too strong and their mood too dominant, going against much of the rest of the planting. This resulted in my cutting several to the base in July to give plants that were in danger of being swamped a chance, and so now they will all be marked for removal. Living fast and dying young is also the nature of the Knautia macedonica and they have also served well in this first growing season. However, their numbers will now be halved if not reduced by two-thirds so that the Molly-the-Witch (Paeonia mlokosewitschii) are given the space they need for this coming year and the Panicum virgatum ‘Shenandoah’ the breathing room they require now that they have got themselves established.

Gaura lindheimerei

Knautia macedonica with Salvia nemerosa ‘Amethyst’

I will also be removing all of the Lythrum salicaria ‘Swirl’ and replacing it with Lythrum virgatum ‘Dropmore Purple’. I was so very sure when I had them in the stock beds that both would work in the planting but, once it was used in number, ‘Swirl’ was too dense and heavy with colour. The spires of ‘Dropmore Purple’ have air between them and this is what is needed for the frame of the garden not to be arresting on the eye and so that you can make the connection with softer landscape beyond.

Lythrum virgatum ‘Dropmore Purple’ (front) with Veronicastrum virginicum ‘Album’ and Sanguisorba officinalis ‘Red Thunder’ (behind)

The larger volumes of Lythrum salicaria ‘Swirl’ can be seen at the front of this image 

As a gauzy link into the surroundings and as a means of blurring the boundary the sanguisorba have been very successful. I trialled a dozen or so in the stock beds to test the ones that would work best here.  I have used Sanguisorba officinalis ‘Red Thunder’ freely, moving them across the whole of the planting so their veil of tiny drumsticks acts like smoke or a base note. A small number of plants to provide cohesiveness in this outer wrap has been key so that your eye can travel and you only come upon the detail when you move along the paths or stumble upon it. Sanguisorba ‘Cangshan Cranberry’, perhaps the best of the lot for its finely divided foliage, picked up where I broke the flow of the ‘Red Thunder’ and, where variation was needed, Verbena macdougalii ‘Lavender Spires’ has proved to be tireless. Smattered pinpricks, bright mauve on close examination but thunderous and moody at distance, are right for the feeling I want to create and allow you to look through and beyond.

Sanguisorba officinalis ‘Red Thunder’

Sanguisorba ‘Cangshan Cranberry’

Verbena macdougalii ‘Lavender Spires

The gauze has been broken by plants that draw attention by their colour being brighter or sharper or the flowers larger and allowing your eye to settle. Sanguisorba hakusanensis (raised from seed I brought back from the Tokachi Millennium Forest) with its sugary pink tassels and lush stands of Cirsium canum, pushing violet thistles way over our heads. The planting has been alive with bees all summer, the Salvia nemerosa ‘Amethyst’, now on its second round of flower after a July cutback, and the agastache only just dimmed after what must be over three months ablaze. Agastache ‘Blackadder’ is a plant I have grown in clients’ gardens before and found it to be short-lived. If mine fail to come through in the spring, I will replace them regardless of its intolerance to winter wet, as it is worth growing even if it proves to be annual here. Its deep, rich colour has been good from the moment it started flowering in May and, though I can tire of some plants that simply don’t rest, I have not done so here.

Sanguisorba hakusanensis

Cirsium canum (centre) with Verbena macdougalii ‘Lavender Spires and Agastache ‘Blackadder’ 

Agastache ‘Blackadder’

The lighter flashes of colour amongst the moodiness have been important, providing a lift and the key into the brighter palette in the plantings that will be going in closer to the house in a fortnight. More on that later, but a plant that will jump the path and deserves to do so is the Nepeta govaniana. I failed miserably with this yellow-flowered catmint in our garden in Peckham and all but forgot about it until I re-used it at Lowther Castle where it has thrived in the Cumbrian wet. It appears to like our West Country water too and, though drier here and planted on our bright south facing slopes, it has been a truimph this summer.

Nearly all the flowers in the planting here are chosen for their wilding quality and the airiness in the nepeta is good too, making it a fine companion. I have it with creamy Selinum wallichianum, which has taken August and particularly September by storm. It is also good with the Euphorbia wallichii below it, which has flowered almost constantly since April, the sprays dimming as they have aged, but never showing any signs of flagging.

Nepeta govaniana

Selinum wallichianum

Calamintha sylvatica ‘Menthe’

I have rather fallen for the catmints in the last year and been very successful in increasing  Nepeta nuda ‘Romany Dusk’ from cuttings from my original stock plant. I plan to use the softness of this upright catmint with the Rosa glauca that step through the beds to provide another smoky foil.

Jumping the path and appearing again in the planting that will be going in in a fortnight are more of the Calamintha sylvatica ‘Menthe’. True to its specific name, this pretty, white calamint seems happy to seed around in cool places and I have used it, as I have the Eurybia diviricata, as a pale and cohesive undercurrent. They weave their way through taller groupings to provide an understory of lightness, breathing spaces and bridges. Both of these are on the autumn order and will jump again into the new palette I have assembled to provide a connection between the two.

Words: Dan Pearson / Photographs: Huw Morgan

Published 14 October 2017