Necessary light for houseplants and the effects of excessive light
One of the main factors in plant growth is its proper light. But does too much light cause damage to the plant, especially houseplants? Yes, many plants can only tolerate their own light conditions, which is a little difficult to determine the exact amount, but in any case, if this amount is low or high, the plant will have appearance problems that can be detected in time. Destruction saved. Join us in this article to get acquainted with the appropriate amount of light for plants and light-dependent parameters. Accompany the necessary light for houseplants and the effects of excessive light.
Necessary light for houseplants and the effects of excessive light
High light and houseplants
Can indoor plants light up too much for them? Yes, plants can receive too much light in two ways. The first is that the light is too intense and unfiltered, which can damage your plants. The second case is the time of receiving light, which extra time of light can affect the growth cycle of many plants. Light intensity and duration limits vary between plant species.
To learn more about this topic, join us until the end of the article to know why too much light is harmful to plants, as well as how to diagnose the problem and choose the ideal light for plants.
What happens when plants are exposed to too much light?
There are two points to consider here: 1. The duration of light and 2. The intensity of light.
The duration of light refers to the number of hours of light that the plant receives each day, and the intensity of light is the amount of light per unit area.
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1. Light duration
In most cases, the plants can be exposed to light indefinitely and continue to grow. However, prolonged exposure to light can affect the growth cycle and flowering ability of the plant, but this varies depending on the type of plant. It is interesting to know that plants actually grow faster at night due to important metabolic processes that take place at night. However, some plants need more darkness to grow or bloom, and night time is not enough for them.
Plants such as Bent Consul, Kalanchoe and Christmas Cactus need long periods of darkness for several weeks and are known as “short day plants”. Many plants and vegetables need short nights to start flowering and are known as “long day plants”. In general, only plant growth cycles are affected by the duration of light and plants are not harmed.
2. Light intensity
Light intensity is something you should be careful about because it has irreversible effects on the plant. When a plant is exposed to intense light, some of that light energy is converted into heat. Your plant needs to take steps to eliminate this heat energy, which usually involves using some of the available water to cool it.
Over time, this can deplete the plant of water reserves and not leave enough water for vital processes such as photosynthesis. If the plant’s capacity to dissipate heat is exhausted, or if the amount of heat produced is greater than the plant’s ability to dissipate, the plant will suffer heat damage. It often appears as yellow or brown spots on the foliage, usually yellow leaves, the edges or tips of crisp brown leaves, or curled and fallen leaves.
Intensity of light may also dry out the soil from which the plant absorbs moisture, leading to rapid dehydration. This can damage the plant in different ways and different plants have different levels of light tolerance
How do we know that our plant has a lot of light ?!
It is difficult to know how much light your plant really needs. From direct light to indirect light and low light, different types of plants have different needs. As mentioned, a plant that receives too much light shows signs of damage. Recognizing these early signs is important because it allows you to adjust the position of your plant to receive the right amount of light and fix the problem before your plant’s health is significantly affected.
Signs of excessive light for the plant
Browning of the edges or tips of the leaves
Brown and dry spots on the leaves
The leaves turn pale or yellow, especially those that are more exposed to light
Significant yellowing of the tips of the leaves that may not initially affect the veins
Withering leaves, especially younger foliage
Plants inside the apartment and too much light
Although indoor plants receive less light than outdoor plants, they can also suffer from excessive light problems. Placing houseplants next to unfiltered windows with too much light can damage them. While the intensity of light through the window can be up to 50% less than direct sunlight outside, it is still very intense for many indoor plants.
For example, plants such as hydra and ferns grow in indirect light and can be damaged if placed directly next to a window, especially a south-facing window in full sun. This effect is even greater for plants that grow in low light. The best solution to this problem is to move the plants to an area with less light.
Can too much light destroy the plant?
Yes, too much light can eventually destroy your plant.
Intensity of light can increasingly damage your plant to the point where it dies. It can also dry out the plant to such an extent that it no longer has the water needed for growth and photosynthesis.
Do plants grow faster with 24 hours of light?
No, plants also need some darkness 24 hours a day to grow and flourish.
While your plant has more light to continue photosynthesis, it simply collects energy from the sun and stores it as carbohydrates in the plant. To use this energy and grow it to the maximum, most plants need a period of darkness every day.
Importantly, 24-hour light may affect the flowering ability of the plant. Some plants, such as plants that are sensitive to light, need darkness to bloom.
Can LED lights burn plants?
Yes, but it depends on the intensity of the light reaching the plant and the heat emitted by the LED light.
You have to be very careful to place the LED lights at the right distance from the plants that are growing. This amount will vary greatly depending on the lights you use and the plants you keep.
Also, instead of using standard LED bulbs, you should be careful in choosing lights for plant growth. Ordinary LED bulbs are very suitable for humans, but the wavelengths of light they emit are often useless for plant growth. This can lead to the plant receiving too much light energy that it can not use, and this negatively affects growth.