Early autumn is an ideal month to divide the herbaceous perennials of the garden. These are the flowering plants which die back each winter, the roots remaining dormant beneath the soil until the arrival of the following spring, this bringing warmer temperatures which triggers new growth to commence once again. There are a variety available, producing a beautiful array of colours for the entire summer season. Popular herbaceous perennials are: - Geranium - Phlox - Salvia - Delphinium - Aster - Hostas The question is why to divide? Herbaceous perennials can outgrow their space and look rather messy, particularly in the centres and after division, older plants will have an opportunity to rejuvenate. The garden beds overall may have become overcrowded with plants encroaching on others adjacent to them and without dividing, the following summer the crowding will augment. It is a productive method to increase the number of plants within the garden and to fill any empty spaces that may exist, this being division is quicker in comparison to growing from seed. It can also save money, if the garden has recently been landscaped then it is an excellent way of adding plants and colour to a newly formed bed. When dividing, it is advisable to cut down the summer growth of the taller plants near to the base, then with a garden fork gently lift the plant working outwards from the centre as the most vigorous growth is found on the outer areas of the clump. Alternatively, the traditional method of digging deeper around the perimeter of the plant with the intention of lifting the entire perennial. A spade can be used on the tougher plants such as Hostas and slicing the clump in two after being lifted. The smaller plants such as Geraniums, clumps from the outer edges can be lifted using a garden spade, then once lifted, they can be divided again into smaller clumps with the use of a sharp knife. Perennials with tubers or rhizomes may naturally fall apart when dug, otherwise the tubers are often visible above ground, indicating where to divide. The divisions should be planted as soon as possible and well watered, part of the clump could be replanted in the same position or a different area of the garden. It is beneficial to clean the soil from the roots, the advantage being the health of the roots can be seen as one does not wish to replant damaged or diseased roots or tubers. When ever a plant is lifted it is subjected to shock, however, during the dormant time of autumn the shock is less profound. The plants growth cycle after division will be slow as it recovers from this disturbance. The age old saying being; ‘After you divide a perennial, the first year it sleeps, the second it creeps, and the third year it leaps’. Contribution courtesy of Oliver David Cook on behalf of Green Landscapes Cornwall Ltd
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Lavender is without doubt one of the most popular shrubs to be found in any garden and with good reason too, providing a plethora of pleasures from the amazing aroma to the wonderful lilac flowers, particularly as they sway hither and thither in a gentle summer breeze. Planted alongside paths and walkways, as a small hedge, the perfume emitted is
therapeutic for the person, whilst at the same time attracting butterflies and bees. Planting lavender in clumps or in hedge form ensues a profusion of blossom and is more beneficial for the insects as it means they can jump from flower to flower with ease, compared to a sporadic planting plan. Towards the end of August is the favourable time to prune and harvest the flowers, the soil temperature is at its warmest and once pruned the plant will have an opportunity to grow new shoots before the approaching winter, these shoots will then spring into life the following year. Lavender angustifolia is by far the most suitable to grow here in the UK, the varieties Hidcote and Munstead being the most popular, the latter producing a slightly darker flower. Both fall into the RHS pruning group 10 classification, meaning they flower on new wood and regular pruning will prevent them from becoming too woody. The best time of day to harvest lavender for its aromatic properties is early morning, during this time the oils of the flowers are most profound. As the daytime temperature increases the fragrant oils dissipate and the flowers will then begin to open up more and this is the desired time to harvest for decorative purposes. It is important to use sharp secateurs or shears for pruning as a clean cut is essential and one must avoid from cutting too low into the wood stem section as this will prohibit any new growth which is formed on the upper section only. Aim for cutting one third of the leaf section and in doing so forming a nice evenly rounded mound for aesthetic purposes too. The cut stems and flowers can be bundled together with an elastic band or garden twine and hung for drying away from direct sunlight and in a dry sheltered location. Once the lavender has dried, approximately 3 weeks, the buds can be rubbed or shaken off and stored in a lidded jar. There are numerous applications for dried lavender with imagination being key. The reputed therapeutic benefits include induced calmness, promoting sleep and lowering the heart rate all attributing to a more relaxed state. To enhance the aromas of the house, dried lavender can be used to aid cleaning with a sprinkling of the flowers on carpet prior to vacuuming to release the fragrance. Lavender oils also have multitudinous benefits and uses and a visit to the UK’s most southerly lavender farm based here in Cornwall is highly recommended. Here a wide range of products can be purchased, providing much inspiration too. https://www.cornwall-lavender.co.uk/ Contribution by Oliver David Cook on behalf of Green Landscapes Cornwall Ltd THE CHELSEA CHOP
When one talks of gardening in the month of May, without doubt the Chelsea flower show will spring to mind. However, due to the unprecedented events this year and the prohibition of the coming together of large groups of people and social gatherings has equated to the nations favourite flower show unfortunately being cancelled. For the first ever time the show will be a virtual event which can be viewed online: Nevertheless, just because there is no actual Chelsea flower show it does not mean that we cannot partake in the Chelsea Chop. The Chelsea Chop, to clarify, is a pruning method to determine the size, shape and the flowering season of many of the herbaceous perennial plants. It is so called as it is carried out towards the end of May, coinciding with the RHS Chelsea Flower Show. It is suitable for late flowering perennials. But, why should we carry out the Chelsea Chop? It goes against the natural instinct to drastically cut back a plant prior to flowering. If a herbaceous perennial is chopped down to half its height, using secateurs or shears, it will delay the flowering until later in the summer. The plant will be more compact and shorter which equates to less staking and the flowers can be more numerous if slightly smaller. This is because the top shoots have been eliminated and side shoots lower down will develop and produce the new flowers. Overall, the plants will look much tidier and less leggy. If only half of the perennial clump is cut down, such as the front section, this will induce a prolonged flowering season as the rear section will flower first, then followed later by the pruned front section. Plants which can benefit from the Chelsea Chop are: - Phlox paniculata - Echinacea purpurea - Helenium - Rudbeckias - Penstemons - Nepeta The following are suitable for coastal gardens: - Anthemis tinctoria - Sedum ‘Herbstfreude’ - Achillea - Aster ‘michaelmas daisy’ - Campanulas The Chelsea Chop is hugely beneficial for perennials subjected to the coastal environment of wind and salt spray. The chop creating shorter and stiffer stems and more stability. The Chelsea Flower Show will be greatly missed this year, so why not visit the gardeners world website and their own guide to carrying out the Chelsea Chop. https://www.gardenersworld.com/plants/how-to-do-the-chelsea-chop/ |
Welcome!Here at Penwarne Landscaping we are all passionate about gardens, and believe that outdoor spaces are just as important as indoor ones! In this blog, we regularly share our expertise along with tips and tricks that you can use to make the most of your garden and home. Archives
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