Roof gardening | roof gardening ideas | roof gardening design | roof garden techniques | plant suitable for roof gardening | terrace garden | bog garden plant | what is bog garden | bog garden design ideas | sunken or marsh garden

ROOF GARDENING

Roof gardening

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■ In many articles, rooftop gardening is often referred to as patio gardening, which is not strictly correct in British practice. Gardening on the patio is completely different from gardening on the roof.

■ In modern times, houses with a complex and lawns, especially in cities and towns, are becoming rare to replace such houses. As a result, private home gardens are disappearing and the only places left for gardening are the roofs of houses and the balcony. A spacious and well-designed roof garden can be a place of joy and recreation. In the larger cities of India, many of the large hotels and public buildings are developing this type of gardening.

■ Even in a small town like Lucknow, a hotel has a grassy roof garden, although it is not well planned. Many private homes in Delhi, Calcutta, Mumbai and Baroda have roof gardens, including a lawn.

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■ The hanging garden of dr. B. P. Pal in Delhi, dominated by a collection of roses plus other plants such as bougainvillea, pansies, etc., is a charm in its own right. There are many other private homes in our cities that have lovely hanging gardens with rare collections of cacti, orchids, dahlias, chrysanthemums and other plants.

Limitations

ROOF GARDENING

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The difficulties encountered in a rooftop garden are completely different than in ground level gardens.

1. Since the garden is high off the ground, the maintenance cost can increase as everything has to be raised.

2. But the most fundamental difference is in the depth of the soil. At ground level the depth can be unlimited with a groundwater source, while at the ceiling the depth of the ground is low, not exceeding 90 cm, but generally varies between 20 and 60 cm.

3. Not only is the depth of the roof garden shallow, but the drainage is also good and therefore the water must be constantly replenished with frequent watering.

4. Large trees and shrubs generally do not grow on the roof as main root growth is limited by the roof below.

5. Also, due to shallow depth, good drainage and frequent watering, plant food in the soil flows faster and needs to be improved with more frequent replacements.

Planning: Before designing a roof garden, you need to check a few points.

■ Flower beds can be made directly on the ceiling. This can be achieved by placing the floor between the outer wall or parapet and a wall built on the inner side with the help of stones or bricks for moisture-resistant wooden formwork. The width of such boxes will vary depending on the space available, the nature of the plants to be grown and other factors. These beds built directly on the roof surface are not always preferred as they are permanent in nature and can also damage the roof. Alternatively, the best method will be to place a series of containers that contain soil, such as boxes, pots, troughs, tubs, etc., which are placed on wedges or bricks to leave a free space between them and the ceiling for proper drainage and passage. of air.

■ The first thing to check before starting a roof garden is whether the roof surface can support the weight of the ground. The soil, especially the wet one, is much heavier than one can normally conceive. Secondly, the roof must be waterproofed to prevent water from seeping into the room below, and finally it must have adequate drainage so that rain and irrigation water can drain quickly.

■ The very concept of rooftop gardening is artificial; therefore, when planning and designing this point should be taken into consideration. For example, you cannot create a natural landscape with hills and valleys or a natural forest landscape. As with any other type of gardening, a roof garden should also have a dominant focal point, such as a lawn or water garden or rock garden or prominent vine (e.g. Bouganville, Clerodendron splendens, Bignonia venusta, climbing roses). .

■ On a roof the space available for gardening is limited; therefore, it is a good idea to encourage vertical growth. This is why a rooftop garden lover should use

■ More climbers and trailers in your yard, some of which can climb over a support pillar, while others can grow rampant beyond the boundary wall and spill over and hang along the side of the building.

■ Ficus repens is a good root climber that can cover a wall.

■ Other attractive grape varieties include Cobaea scandens (annual), railroad vine, Vernonia elaegnifolia (curtain vine), passionflower, Thunbergia alata (annual), etc. Hanging baskets should play an important role in a roof garden.

■ Various types of baskets containing flowering or foliage plants can be displayed to great advantage in the right places. Even the collection of bonsai and a few alpine plants can be advantageously exhibited. One or more vertical gardens can also be displayed in a planned manner on the roof garden.

It is possible to grow a wide variety of plant materials in a roof garden excluding, of course, large shrubs and large trees.

■ Annual flowering:

Antirrhinum, broth, dwarf sweet peas, pansy, dahlia, chrysanthemum, marigold, sweet alder, phlox, roses (Dianthus) and verbena.

■ Perennial herbaceous plants:

Daisy, canna, Mirabilis jalapa, Portulaca, Solidago canadensis, Vinca rosea and perennial verbena.

■ Shrubs - Many dwarf and medium shrubs can be grown.

■ Trees:

One or two dwarf trees such as Plumeria sp. Callistemon lanceolatus and Gliricidia maculata can be grown as sample plants. Some large and medium-sized trees such as Araucaria cookii, Brassia actinophylla, etc., can also be grown as long as they are young.

■ Creepers:

The vines that can be grown are mentioned in the text.

■ Bulbs:

It is possible to grow a variety of bulbous plants of an annual or perennial nature.

■ Aquatic plants:

Water lilies and other aquatic plants can be grown in the water lily pool in concrete tubs.

MARSH OR BOG GARDEN

Marsh or bog garden

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■ A true swamp is an area where there is stagnant acidic water and only plants such as sun dew, butter words, etc. grow. But the swamp garden that we find in the landscape is actually a swamp where the soil is neither acid nor acid and a stream or a shallow stream runs through it.

HORTICULTURAL CROPS:-

Cinnamon (Daalchinni)

■ A pond is not an essential feature of any marsh garden, but if there is an adjacent pond, the overflow water can be used to keep the marsh garden moist. The main criterion of a swampy garden is to always keep it moist and in a swampy state. For this reason, the marsh garden site should be low, where surface drainage water will naturally accumulate. A site with a sticky clay subfloor is ideal for a swampy garden, as just a splash of water will keep it moist. But, if the soil is light in nature, a certain amount of digging will be required before creating a swamp garden.

■ The entire area destined to become a marsh garden is excavated to a depth of 60 cm. and a thin layer of clay, 10-12 cm deep, is placed on the bottom to form the base of the marsh garden. A 12 cm layer of rubble or large stones is then placed over it to ensure that the swamp water does not stagnate.

■ The rest of the ravine is filled with 1: 1 garden compost and leaf compost and the level is offset by the surrounding soil. A marsh garden should never exceed 60 cm in depth. even if its diffusion will depend on the available area and personal choice. A marsh garden should never suffer from drought and should be kept sufficiently moist with a spray of water to avoid stagnation.

■ All parts of the marsh garden can be accessed by placing rough stone or brick paths, bypassing the marsh and placing steps on them. It should be noted that all marsh plants need water, but to varying degrees.

Consequently, swamp plants can be classified into three large groups.

MARSH OR BOG GARDEN

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■ The first group includes plants that have more than 5-10 cm of standing water and are called swamp dwellers. In the second category are plants that live at or slightly above the waterline, with their roots in flooded soil. In the third group are those plants that grow above saturated soil, but close enough to send their roots in search of water.

■ A marsh garden can accommodate all moisture-loving plants, those commonly found on the banks of streams or ponds. Some of the plants that can stand in 12-15 cm. of water are also included in a swampy garden. In some places in the swamp, plants that grow in shallow water can also be hosted.

Plants suitable for the swamp garden are listed in the table below.

Acorus calamus Calamus var. variegated and sweet flag; Alocasia, Arundinaria (bamboo), Arundo donax, Fern, Marsh Marigold Double, Cypripedium spectable, Day Lily, Hosta sp., Plantain Lily; Trees like Acacia farnesia, Barringtonia, and Salix can be grown in the background.

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