MARCH FOR THE SUMMER BULBS 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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It is a month which at times can show signs of spring and entice one to partake in some gardening. Indeed, if the weather is genial then February is the ideal month to prune those plants which belong to the RHS category of Group Six pruning.
Essentially, these are the plants which flower late summer to autumn and on the current new seasons stems and growth. Examples of plants which adhere to Group Six pruning are:
As these shrubs flower on the same years growth a hard prune is required during the month of February and as in the case of the hardy Fuschias almost down to ground level, this can be extremely therapeutic too for the person who is doing the pruning. Perovskia ‘Blue Spire’ which exhibits a wonderful display of blue-lilac flowers, also known as Russian Sage, will benefit immensely from a hard prune back to its basal shoots. Perovskia thrives in many coastal areas and in many soil types and with aromatic leaves akin to sage and an appearance similar to lavender it makes an excellent low lying hedgerow. Buddleja Davidii also known as the ‘Butterfly Bush’ can be cut down, using large pruners, to approximately half a metre from the ground, this will encourage upright shoots with a slight arching habit and will be greatly appreciated by the butterflies. As a rule of thumb for shrubs which adhere to Group Six pruning, cut back the previous years flowering stems to one or two buds from the older framework. Certain types of Clematis will also be required to have a hard prune in February, this is particularly the case for Herbaceous Clematis, Gypsy Queen and Clematis Viticella. They all flower on the current seasons growth in late summer and if they are not pruned annually the stems will be devoid of flowers and only up high will the flowers grow and most often amongst a tangled mass of growth. It must be noted that Clematis has its own pruning group classification, those which flower in late summer fall into Clematis Group 3, whereas, those which flower in early summer and on older wood or the previous years growth fall into Clematis Group 2. If unsure when to prune, then observe the time of year the Clematis will come into flower. For the kitchen gardeners, autumn raspberries will fall into Pruning Group Six. All old canes should be cut back down to ground level in February and the new canes will start to grow in spring and then fruit in late summer. It is important not to mistake summer raspberries for the autumn variety, as they fruit on the previous years canes, which would result in a loss of crop. Contribution By Oliver David Cook MISTLETOE the ‘air-plant’ Mistletoe, its true name being Viscum Album, is synonymous with this time of year particularly with the tradition of ‘Kissing under the Mistletoe’. There are many ancient mistletoe traditions, the best known being the Scandinavian legend Balder, the god of peace, who was killed by an arrow made from mistletoe and was resurrected by the other deities. The goddess of love was then entrusted with the mistletoe and regarded it as symbol of love, hence, any person passing beneath shall receive a kiss. Mistletoe is an evergreen parasitic shrub with white viscous berries and of the natural order Loranthaceae. It is a native of Europe and North Asia and requires a host plant with which to grow on, such as an apple tree in the garden. Orchards benefit from the growing of mistletoe on their fruit trees, thus yielding a return during the winter months when the trees are dormant. This is what makes the mistletoe so unique, it is also known as an ‘air-plant’ that is it is not rooted to the ground but it attaches itself to other plants, the correct name for such a plant is an Epiphyte, this word originating from the Greek words epi (upon) and phyton (plant). The bark and the leathery mistletoe leaves are of a yellow-green colour and are oval- lance-shaped, mostly in pairs. In spring, there are inconspicuous yellow flowers which consist of four triangular sepals, a similar number of anthers and an ovary with simple stigma. This is followed by poisonous white berries, however, they are devoured by birds most notably the Mistle Thrush, the seeds becoming attached to the branches of trees by their agency. On germination the embryo pierces the bark and penetrates to the wood and here it draws most of its food from the tree, but it manufactures carbohydrates in its leaves.The constituents of mistletoe can vary due to the host plant with which it grows on and it is believed the Druids regarded the mistletoe which grew on an Oak was the superior, although Oak being a rare host. It possible to grow your own mistletoe and there are numerous fact sheets and websites available including the following: http://mistletoe.org.uk/homewp/index.php/grow-your-own/ |
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