Monty Don gives advice on how to cut and maintain hedges as well as giving ideas on growing fruit in pots. Carol Klein chooses varieties of late-flowering clematis as her plant of the month, Nick Bailey travels to the southern tip of Cornwall to seek out a plant which escaped from our gardens and is now threatening rare and native plants, and Adam Frost uncovers the secrets of successful planting combinations in an Oxfordshire garden.
Mark Lane joins the enthusiasts who have lovingly restored a walled garden in Warwick as they open their gates to the public for the first time, and we visit a garden in Yorkshire where foliage and not flowers are of paramount importance.
Gardeners World episode 20 2017 :
1. Clematis cuttings
Clematis are dead easy to propagate from internodal cuttings. If you fancy having a go, Carol Klein shows you exactly what to do.
2. Hedges: trimming
Established hedges require trimming to keep them dense and compact. Formal hedges require more frequent trimming than informal hedges.
3. Crop rotation
The principle of crop rotation is to grow specific groups of vegetables on a different part of the vegetable plot each year. This helps to reduce a build-up of crop-specific pest and disease problems and it organises groups of crops according to their cultivation needs.
4. Grow your own kale
Often a neglected crop, but one that is increasing in popularity due to its nutritional properties. Kale (also known as borecole) tolerates cold weather better than most other brassicas and is relatively free of pests and diseases, although it should be netted against birds. It will also tolerate a lightly shaded position. Always pick the leaves when they are young and tender.
5. Growing Clematis From Seed
Species clematis seed will produce offspring that are virtually indistinguishable from the mother plant. However, seed of hybrid clematis or any of the large-flowered cultivars will produce plants which vary from similar to, to very different from, the mother plant. Sow ripened seed as soon as you obtain it. The time of germination will vary, but will not be improved by delaying the sowing. Species clematis and many small-flowered types can germinate in six weeks, but can take a year or more if conditions are not to their liking. The seed of large-flowered clematis may remain dormant for up to three years, so have patience!