What is the Ideal Humidity Level for Your Cannabis Plants?

Understanding Humidity and How It Impacts Your Plants :
Humidity, simply put, is the amount of water vapor present in the air. It depends on several factors such as recent precipitation, proximity to a body of water, the density of surrounding vegetation, and even temperature. When it is very cold, the air contains less water vapor, while at high temperatures it can contain more, thus preventing it from transforming into liquid. You've probably noticed your breath in winter: it's water vapor condensed from the cold air. Conversely, your clothes dry more quickly in summer because the hot air can hold more water vapor.

For plants, which are also living things, humidity is crucial. Just as we sweat to regulate our temperature, plants evaporate water through their stomata to cool themselves and eliminate waste. But this evaporation is influenced by temperature and humidity. If the air is humid but cold, plants cannot release water vapor, which can cause the roots to stop absorbing nutrients. Conversely, dry, hot air can cause excessive evaporation, leading to increased water and nutrient consumption, which can damage leaves and flowers.

The ideal humidity level for indoor plants :
Humidity levels vary depending on the species of plant and its growth stage. Young plants and cuttings need a higher humidity level, between 80 and 85%, to promote their root development. As the plant grows, humidity should be reduced, especially when it is producing flowers and fruit to prevent rot. For indoor plants, it is crucial to recreate an environment close to their natural habitat. The majority of houseplants come from tropical or subtropical regions, where humidity is high year-round. However, indoor environments can often be too dry, especially in winter when the heating is on, which can harm plant health.

How to improve humidity in your grow room :
To increase humidity, group your plants together to create a favorable microclimate. Use trays filled with pebbles and water to create humidity through evaporation. You can also spray water around your plants, but avoid fuzzy leaves and cacti. If necessary, invest in a humidifier to maintain adequate humidity levels.

What to do in case of excess humidity :
Excess humidity can also be detrimental to plants, promoting mold and rot. Ventilate your space regularly to promote air circulation and prevent mold. Control your watering to avoid saturating the soil with water. If necessary, move your plants to a drier location temporarily. As a last resort, you can consider purchasing a dehumidifier to regulate the humidity in your environment.

Ideal temperature and humidity for cannabis according to the cultivation phases :

• Cloning : 90-100% humidity to promote rooting. The clones, being devoid of roots, breathe mainly through their leaves. Therefore, they require high humidity to promote rooting and optimal growth.
• Vegetation : 70-80% humidity for optimal development.
• Bloom : 55-65% humidity for healthy buds.
• End of flowering : 45-55% humidity to prevent mold and damage. Some cannabis strains are more sensitive to humidity than others, so it is essential to maintain a proper balance throughout the growing process. Sativas are more resistant to humidity

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