Herbaceous perennials – plants which live for several years but have soft growth which dies down in the winter – should be lifted and divided every few years to maintain their strength. It is often an opportunity to increase stock so that a single plant may become a group of three or more within a few years. We use this method of propagation, but we also lift and divide when we decide to move plants from one area of the garden to another. We use herbaceous plants as temporary ‘fillers’ between shrubs to give extra colour while the more permanent plants grow to size, moving them as the shrubs fill the space.
This year we have decided to construct a swimming pool for holiday guests and Garden Design Academy students. Its placement was the subject of much debate and we used it as a surveying and design exercise with a group of visiting garden designers and landscapers last year. The size and area having been agreed upon and a skilled constructor having been appointed, I have been left with the task of clearing the plants to allow work to start at the beginning of April.
The site runs along one boundary, connecting the house with our log cabin lecture room. As none of the boundaries, buildings or features is parallel to each other, we have had to decide if we would install the pool perpendicular to the house, to the cabin or neither. With the advantage of CAD and a room full of design and construction specialists, it was soon clear that the way to proceed was at a right-angle to the cabin rather than the house. This leaves a border that narrows into the distance when viewed from the house, emphasising the length of the garden, an illusion popular with French garden designers at the time the house was constructed.
The bed has been planted for only two years or so but is already beginning to look established in places. It was also used as a nursery, a home for plants with no home and a place to root hardwood cutting. The design was beginning to show through the jumble however, before I started to rip it apart. I measured and pegged out the pool and its surrounding paving so that I could see what plants needed to be moved: quite a few. I started with the trees, of which there are far too many. The Clerodendrum trichotomum, acquired as a sucker from a local plant, took some lifting. Despite negative reviews from some American sources I think this is a beautiful tree, a native to Western China and named in honour of Paul Guillaume, a French missionary and naturalist in Central China. It has very fragrant, pretty white flowers in August. These are followed by outstanding and eye-catching, metallic-blue berries in autumn. The star of this bed in 2011, it has now been moved to the front garden.
A Liquidambar has been potted and may be given to gardening friends, but the Golden Catalpa is now in a pot on the patio, under-planted with yellow Crocus as it was when it was growing in the side bed. The trees out, I am now turning my attention to the herbaceous plants. Sedum spectabilis and Geums have now been lifted, divided and planted in another front garden bed, close to a relocated modern French shrub rose and established Delphiniums and Asters, the whole having a very English feel. Homes still need to be found for many more plants but I feel I have broken the back of the work now. In addition I have a collection of newly potted plants to give away to friends.
In the mean time I have had a number of invitations to gardening product launches and events. Unfortunately, everything seems to be arranged for 9am in central Paris and as no-one is paying my hotel bill and I am reluctant to get up for the 6am train, I am attending very few of them. I can tell you however, having turned down an invitation to the press launch, that the theme of the Chaumont Festival of Gardens for 2012 is “Jardins de délice, jardins de délire”. There is a note about this, and links to details of every festival since its beginnings in 1992, on the Loire Valley Gardens site: http://www.loirevalleygardens.com/chaumont_sur_loire.html
Our own Loire Valley Gardens study tour is beginning to attract bookings from as far away as Australia and details of the spring tour on 22nd -29th May can be found here: http://www.gardendesignacademy.com/Res_Loire_Gardens.html