Sunlight and Leaf Burn When Watering Plants

The general rule of gardening is to avoid watering plants during the hottest and sunniest parts of the day. Understandably, even seasoned gardeners might wonder, is it bad to water plants in the sun? It turns out that the idea that watering in the afternoon causes leaf burns is a myth.

What is burning paper?

Leaf burn is a physiological condition that occurs as a result of adverse environmental conditions. It is not a contagious disease. Leaf blight looks like burnt, brown, and dead areas of leaf tissue.

Does watering the grass in the sun burn it?

This is a very persistent myth. There is no evidence that the water on the surface of the leaf in the sun and heat will burn or burn it. However, people see a correlation, but it is coincidental or indirect.

The main cause of leaf blight is insufficient moisture in the leaves. This can result from a number of adverse conditions, particularly those that reduce root function, limiting water uptake:

           Excess salt from sea spray, road de-icing salt, fertilizers, pesticides, and herbicides


           high temperature

           soil mix

           Insufficient potassium

People can blame the sun for plants getting watered during the day when they are already damaged and the damage is getting worse. the sun. But it is not sunlight on wet leaves that causes a burn.

Can I water my plants in the afternoon?

Watering plants in the heat of the day isn’t ideal, but not because the water and sun will both burn the leaves. When the sun is high in the sky and the temperature is rising, the main reason for not watering is evaporation. The sun’s heat evaporates a certain amount of water you put on your plants, which can make it very time consuming to do so.

The best time to water is first thing in the morning before it gets too hot and the plants have time to dry out. Watering in the evening limits evaporation immediately, but also limits the duration of evaporation. Stagnant water leads to fungal infections.

Most people find that plants wilt in the middle of the day in hot, sunny weather [5] and avoid watering to prevent leaf burn. But once plants show signs of damage, delaying watering can only make matters worse. If your plants are stressed, water them immediately, no matter what time of day it is.

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