During the month of March the northern hemisphere spring equinox occurs, thus the length of daylight is
equal to that of darkness. From then onwards the daylight hours increase and the gardening season is well and truly upon us and no doubt a floriferous spring and summer to look forward to. A variety of summer bloom can come from the bulbous plants and the month of March is ideal to plant the following popular bulbs: - Dahlias - Gladioli - Begonias - Crocosmia - Cannas Lily All of the above can be regarded as sub-tropical plants, which thrive in the sunny and warm locations of the garden. Therefore, it is best to take heed of the weather forecast and not to proceed with planting if a frost is imminent. Essentially the difference between spring bulbs and summer bulbs is that the spring bulbs require several weeks of cold temperatures to trigger the upward growth, hence they are planted in autumn and remain in the soil throughout the winter with growth and blossom occurring in spring. However, the summer bulbs with their preference for a warmer climate do not require this slumber period of cold temperatures. The term bulb is used generically as it includes bulbs, tubers, corms and rhizomes. They are all underground storage organs, the correct name which classifies them all under one umbrella is ‘Geophytes’ originating from Greek, earth (Geo) and plant (phytes). The planting depths can vary depending on the type of bulb, a good rule of thumb is two to three times the size of the bulb which more than often equates to planting approximately 100mm deep. Dahlias are root tubers and can benefit from being pot planted in a greenhouse for the initial growth to commence and then transplanted into the garden, this is to ensure they do not succumb to any frosts. It is however, the temperature of the soil, a minimum of 13c and not the air temperature which contributes to healthy and beautiful dahlias, therefore, it is best to choose an area with full sun and lighter, free drainage soil. Gladioli and Crocosmias are both corms and to be planted approximately 100mm deep and it is advisable to prepare the planting bed by adding some compost after loosening the soil with a garden fork. The Crocosmia corms will benefit from being planted in clumps, whereas, the Gladioli should be planted individually with the point of the corm facing upwards and by placing several in close vicinity to one another, one will be rewarded with a fabulous display of blossom. Gladioli also make excellent cut flowers for the enthusiastic florists amongst us. Begonia tubers are suited for containers and hanging baskets and will provide a continuous colour throughout the summer and autumn. The fibrous rooted variety are more suitable for the garden beds. The tubers have a convex side which is planted downwards, the concave side will posses the new growth and faces upwards. Plant in a pot with a thin layer of gravel/shingle to allow for drainage then the remainder with compost and plant the tuber just beneath the surface. The range of colourful begonias available ensure hanging baskets are a great addition to any garden. The canna lily is a rhizome (underground stem) and the large bold tropical leaves and striking flowers make for a terrific display and should be planted in full sun and a sheltered location away from strong winds. Plant the rhizomes, with the growing points facing upwards, 100mm deep with 500mm spacing between each one for a superb summer display and then water thoroughly. It is highly recommended to use a soil thermometer probe before the planting of summer bulbs, then one can be sure the necessary soil temperature of 13c has been reached for a successful summer bloom.
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We often strive for an orderly and well maintained garden, one which looks tidy with regular pruning, mowing of lawns and the weeding of garden beds. Aesthetically pleasing and satisfying this may be, the garden, however, becomes devoid of any mess and untidiness, and this in due course can have an adverse affect on the wildlife and beneficial insects. The beneficial insects being those which create a natural ecological balance within the garden, attracting a range of prey and predators. These insects and mammals work in harmony and will reduce the unwanted pests which can attack the vegetable garden and shrubs alike. They will also lessen the need for any chemical applications. To entice these insects into the garden, a suitable, natural habitat is required, and the most appropriate is a dead wood habitat, essentially, a pile of logs or a wood stack. Winter is an ideal time to procure the dead wood, either from gathering any fallen branches within the garden or by pruning the dead limbs and branches, particularly from deciduous trees and shrubs. Avoid collecting the wood from natural woodlands and hedgerows as this will be disrupting an existing habitat and the natural environment. Alternatively, ask neighbours if they have any excess dead wood they are wanting rid of, I am sure it would be greatly appreciated. The location of the wood pile within the garden is critical for a successful dead wood habitat, it should be away from direct sunlight and sited in a full shade area, or with dapple light. This environment will augment the wood decay and encourage fungi, mosses, lichens and insects. To construct a log pile it is advisable to find logs with the bark still attached, the bottom layer of say four to five logs to be partially buried into the ground, the decaying wood beneath the soil’s surface attracts certain types of beetle. Ensure there are nooks and crannies for insects and mammals to enter and then add leaf litter into the gaps to encourage hedgehogs seeking hibernation. Another couple of log rows can be placed on top, the dark and damp conditions will lure centipedes, millipedes and woodlice which in turn attract the predators such as birds, toads and hedgehogs. A wood stack is constructed with smaller branches and twigs and is just as beneficial as a log pile for wildlife. Firstly, it is recommended that branches/stakes are driven vertically into the ground, forming a rectangular shape and with approximately half metre remaining above ground. Then start with laying the larger branches at the bottom and begin to fill the formed rectangular shape with the remaining branches and twigs until the desired height is reached. A mixture of wood is good for both log pile and wood stack, however, poplar and willow cuttings can have a tendency to re-sprout if in prolonged contact with the ground. The wood will slowly decay over a duration of time and more can always be added, thus, a permanent home has now been created to encourage the beneficial insects and assist towards a balanced ecological garden. If unsure how to dispose of the logs and wood cuttings, then why not transmute them into a dead wood habitat, as dead wood breeds life. December is an ideal time to plan a garden reset or makeover in preparation for the following spring and if not practising already why not try cold frame gardening. Cold frame gardening is a method of planting different types of green life, mainly produce, in a microclimate created by a man-made structure. The addition of a cold frame within the garden enables the growing season to be extended. They are versatile, require little surface area, ideal for a small garden and are easy to build, alternatively, they can be purchased flat pack or ready-made from an established retailer. Essentially a cold frame is a bottomless box with a skylight, a halfway house between a greenhouse and exterior planting. They can be positioned directly onto any garden bed and assist in warming bare soil in early spring. The transparent lid allows the sunlight to enter and simultaneously prevents heat loss by convection which would otherwise normally occur, particularly during the night. Thus, a microclimate is generated with an increase in soil and air temperature and also providing protection against the elements, such as strong wind, rain, hail and even snow. Plants can be started earlier in spring, such as seedlings which can then be transplanted to open ground once established. A variety of produce can be grown in a cold frame, the most popular being lettuce, spinach, kale and green onions. However, a variety of root vegetables and brassica can be grown too. When deciding to position the cold frame, take in consideration that full sun is essential and the transparent cover should slope downwards at a slight angle facing southwards to absorb the heat from the sun and to allow for rain run off. A cold frame can be constructed from any material, the sides being of a solid material such as wood or masonry and the top being of a transparent material such as glass. A wooden structure can look aesthetically pleasing as well as being portable too, whereas, brick or block structure will be a more permanent feature and choice of location should be greatly considered before building. The most simple method of construction being straw bales used as sides and an old disused glass window or door placed on top. Imagination is key! It can be designed and built to suit your particular needs, hinges and handles attached for ease of opening the cover and if preferred one crop could occupy the entire cold frame or a combination of crops in rotation to provide produce throughout the year. It is important to ensure the transparent cover is clear from any debris, as this will inhibit heat absorption and with crops being under cover, regular watering will be required. Increased humidity can be a problem within a small enclosed area, therefore, allow for slight ventilation within the cold frame structure. Specific frame designs are available so they can be positioned on a hard landscaped surface such as paving. These can take on the appearance of a miniature greenhouse and more suitable for potted plants. Cold frames are cheap to buy, easy to build and easy to maintain. They can be sited directly onto a garden bed, gravel or a paved surface and are a valuable addition to any garden, large or small. A mobile and modular solution for growing plants, lower in price and occupying less space in comparison to a greenhouse, there are many advantages of cold frame gardening. contribution from Oliver David Cook |
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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