Draining a plot of land involves getting rid of excess water by resorting to underground water pipes normally used for run-off water. One will however take care not to deplete the ground water in this process because the plants, much like all living beings, need it to live. That is to say that the drainage should be done by taking certain conditions into account.

There may be effects linked to the presence of poorly drained water. Not only does it not serve the plant’s growth, but again, it can be absorbed by the ground.

The garden’s drainage : should you do it or not?

Stagnant water on the garden’s surface is an inconvenience for the plants. Moss and mould appear at their base. Moulds are fungi of very small size, containing a felt-work of filaments on which the reproductive elements appear scattered. They are plant parasites (downy mildew, powdery mildew). As for the moss, it is formed by a carpet of short leafy stems pressed tightly against one another, living on the ground, trees, walls, roofs, etc.. Much like mould, mosses also affect the growth of plants. So, should the garden be drained after finding the presence of moss or mould, both of which are signs of excess water in the soil? We can facilitate the soil’s ventilation by cutting some trees to create some openings. However, drainage is, without a doubt, a long-lasting solution. Indeed, a drainage system is necessary either to reduce the amount of water contained in clay soil, or to evacuate rain water so that puddles or mud no longer remain on the ground’s surface. But how should one proceed to drain his or her garden? Before answering this question, look for other signs of excess water in the soil.

Signs of excess water in the soil

Signs of excess water in the soil vary depending on whether the concerned plant grows in a container, in the ground or on grass-covered land. In the first case, excess water is characterized by falling leaves or by the plants’ lack of strength or vitality. Under these conditions, the growing leaves soon start withering. In the second case, in-ground planting, plants grow slowly ,wither ,and their leaves turn yellow. On a grass-filled area, extra water takes the form of puddles, and turns the grass yellow.

How to drain a garden

Drainage aims to ensure that water is immediately removed from the ground’s surface after showers or periodic waterings carried out in addition to rainfall. That being said, a drainage system is based on the ground’s specificities. If the ground is not too damp, but cannot dispose of water, start by digging trenches 12 inches wide (30 cm) and 20 inches deep (50 cm). Take special care to dig them in the direction of the slope. If the ground is flat, create a slope of 1 to 2%. Afterwards, pour gravel and sand in the trenches, then lay down the PVC pipes and cover everything with sand and gravel, leaving an 8 to 12 inch (20 to 30 cm) layer of soil on top of the drains to let the grass grow. When the ground is too wet, a complete drainage network needs to be installed and this is far from easy to achieve. It consists of connecting all the pipes to drain off water to a stream or a cesspool that will itself be dug far away from the land to be drained. Digging a cesspool is a big job and is ideal to entrust it to a professional. If you plan to do it yourself, dig a deep pit, lay down a first layer of gravel on which you will put, subsequently, a filtering system, stones, an insulator and a second layer of gravel.

Draining clay soil

One must first dig up the plants of which the leaves turn yellow or wilt. Among these, only keep the strongest ones which you will replant according to the following procedure. Make a hole in the place where each plant was dug up. Fill them with manure or compost. After carefully separating the roots and setting them in order, replant the plants you’ve kept, then seal the hole with a mixture of fertilizer and soil. What should never be done is putting gravel or sand in the holes at the risk of suffocating the plants.

No related posts.

Published in Watering by Alexander on 06 Jul 2011