How extreme temperatures and humidity affect the garden.

Excess or lack of humidity

The water is one of the essential factors for plant life. The water needs in the plants are related to the evaporation in the substrate (soil) and the transpiration of the plant. Plants with large, abundant leaves need more water than plants with small, sparse leaves.

These needs will be greater the higher the temperature, because the evaporation will be greater. Frequent watering is preferable if possible with a small amount of water, rather than spaced and abundant.

An excess of water for a long time, can cause root suffocation ; especially if the land available is clay soil. The roots rot and are the seat of different types of fungi. The symptoms that the plants manifest are: chlorosis of their leaves, apical desiccation and fall of the same.

In dry climate plants, excess water accumulates in the tissues forming pustules or crystalline edema, the leaves turn yellow and fall. The lack of water, if it is accompanied by high temperatures, causes premature wilting, being frequent the dry or necrosis of the tip of the leaves.

In woody plants, although they are more resistant to drought, flowering is scarce, as well as their budding, with the leaves being smaller than normal.


Extreme temperatures

Heat activates vegetation and cold slows it down.

All living beings have an optimal temperature of development; at the extreme limits, plants do not vegetate well, stop their development and can suffer serious alterations.

When it comes to high temperatures, damage to tissues can be caused by the sun, commonly known as flat iron.

Excessive heat can cause a high loss of water through perspiration, even drying out the plant due to dehydration .

At low temperatures, the formation of chlorophyll slows down , the plants stop their development, offering a yellowish appearance.

Everyone knows the effect that frost produces on young tissues, forming cankers and wounds on branches and trunks, which subsequently dry up. When this happens, it is recommended not to prune the plants until they have sprouted again; thus eliminating all the dry branches.

The hot winds and dry increase evaporation accelerating the drying process; cold and dry winds also cause dehydration in the plants, thus accentuating the damage caused by low temperatures.

Often on sunny summer days , we observe limp tree leaves even when watered in the morning; This does not mean that the plant is thirsty, but that due to the high temperatures more water evaporates through its leaves than can be absorbed by its roots. Hence, it is recommended to spray the leaves with water to maintain their turgor. During the night it will be completely replenished.


Related posts

Deja una respuesta

Tu dirección de correo electrónico no será publicada. Los campos obligatorios están marcados con *

Botón volver arriba