Hornbeam (Carpinus betulus)
Valerie Munro
Hi Margaret,
I realize that as gardeners we must heed the advice of those who know more than we do, but we must at the same time apply some common sense in what we plant and where.
You talk of your intended site for the hornbeam hedge as being prone to water-logging. Here the problem for plants is that in a boggy soil, the roots are starved of the oxygen that they need. Some plants will be able to handle this better than others - alder, birch, some hawthorn cultivars, etc and all willows. Hornbeam is not a classis bog-buster in this context.
There is another thought that we nanny our plants too much in our gardens. In the wild, plants have a choice, survive or not and some will put up with the most amazing hardships that our gardening books would never prescribe! If you can do something to help with the drainage of your soil then I would say go ahead. You could mix sharp sand into the planting hole/s. But, the boggier the soil, the more you will have to do and in an extreme case you may have to think about putting down some form of soak-a-way drain.
A pleached hedge is definitely a joy to behold, but it will take some years to achieve. If you are looking for a more instant screen have you considered exploiting some of our speedier climbing plants? As a suggestion, Clematis armandii will give you fragrant blossom early in the year, and yet keep its leaves all year round. You could mix this in with some other honeysuckle and/or another later flowering clematis.
You could of course do both, and use the trellis screen as a temporary measure with the line of hornbeams planted in front of them. When your pleached hedge has reached its desired height, you can then remove the screen behind it.
Good luck!
Auntie Planty
Replied: Sunday 28th of February 2010 01:02 PM