Cannabis flowering phase: an overview of care and harvest

The flowering phase is one of the most exciting and critical phases in the life cycle of a cannabis plant. This is the phase in which the flowers develop that are ultimately harvested and used. This blog post will give you a comprehensive overview of the flowering phase of cannabis and help you get the most out of your plants.

What is the flowering phase?

The flowering phase begins when the cannabis plant moves from the vegetative phase to the bud growth phase. This is usually triggered by a change in the light cycle - from 18 hours of light and 6 hours of darkness (18/6) to 12 hours of light and 12 hours of darkness (12/12). During this phase, the plant focuses on producing buds rich in cannabinoids and terpenes.

Why is the flowering phase important?

The flowering phase is crucial for the quality and quantity of the harvest. During this time, the trichomes, which contain the valuable cannabinoids such as THC and CBD, develop. A successful flowering phase results in resin-rich, potent buds that have both therapeutic and psychoactive properties. However, mistakes during this phase can lead to reduced yields and lower quality.

Preparing for the flowering phase of cannabis

Thorough preparation for the flowering phase is the key to success. From proper planning to acquiring the necessary equipment, every step will help your plants thrive.

The right time to start

The right time to initiate the flowering phase depends on several factors, including the type of strain and growing conditions. Typically, growers switch the light cycle to 12/12 once the plants have reached a sufficient size and are strong enough to support the weight of the flowers. Starting too early can result in smaller yields, while starting too late increases the risk of mold and disease.

Necessary equipment and materials

For a successful flowering phase, you need special equipment and materials. These include high-quality lighting systems such as HPS or LED lamps that ensure an optimal light cycle. Special flowering fertilizers that are rich in phosphorus and potassium are also required. Other important materials are pH and EC meters, fans for air circulation, and protection against pests and diseases.

Changes during the flowering phase of cannabis

During the flowering phase, plants undergo several crucial changes that shape their development cycle. These changes are essential for the formation and maturation of the flowers.

The stretching phase

At the beginning of the flowering phase, cannabis plants experience a growth phase known as the stretching phase. During this time, plants can double in height. This rapid growth requires increased attention to light and nutrient supply. Adequate lighting and the right nutrient balance are crucial to keep plants healthy and strong.

Formation and development of flowers

After the stretching phase, the plants focus on developing flowers. In the following weeks, flower heads form, which become increasingly larger and denser. The trichomes, the plant's resin-producing glands, begin to appear and contain the valuable cannabinoids and terpenes. Continuous monitoring of the plants for signs of nutrient deficiencies or diseases is particularly important during this phase to ensure the quality of the harvest.

With this outline and the accompanying information, you are well equipped to successfully guide your cannabis plants through the flowering phase and achieve a high-quality harvest.

Caring for your cannabis plants during the flowering phase

Proper care of your cannabis plants during the flowering phase is crucial to achieving a rich and high-quality harvest. This phase requires special attention to light, watering and nutrient supply.

Light and exposure requirements

Light is one of the most important factors during the flowering phase. A 12/12 light cycle (12 hours light, 12 hours dark) is crucial to encourage flowering. High-quality lighting systems such as HPS or LED lamps are ideal as they provide the necessary light spectrum that the plants need. Make sure the lamps are evenly distributed and all plants receive enough light. Too close a light spacing can cause burns, while too little light can hinder growth.

Irrigation and nutrient supply

During the flowering phase, your plants' water and nutrient needs change. They require less nitrogen and more phosphorus and potassium. Use special flowering fertilizers that meet these needs. Be careful not to overwater the plants, as this can lead to root rot. Allow the top layer of the substrate to dry slightly between waterings. The pH values ​​of the water should be between 6.0 and 6.5 to ensure optimal nutrient absorption.

Monitoring and problem detection during the flowering phase

Regular monitoring and quick problem detection are crucial to ensure the health and productivity of your plants during the flowering phase.

Control of pests and diseases

Pests and diseases can cause significant damage to your plants, especially during the flowering phase. Look for signs of pest infestation such as spider mites, aphids or thrips. Yellowish spots, deformed leaves or fine webs can be early signs. Use biological pest control or natural enemies such as ladybugs to keep the pests at bay. Regularly check the leaves, stems and flowers for signs of diseases such as mildew or botrytis (gray mold).

Monitoring trichome maturation

Monitoring trichome maturation is crucial to determining the optimal time to harvest. Trichomes are the tiny, resin-filled glands on the flowers that contain the valuable cannabinoids. Using a microscope or magnifying glass, you can check the color of the trichomes. If most of the trichomes are milky white and some are amber, this is a sign that the plant is ready for harvest. Transparent trichomes indicate that the plant still needs more time to reach its full potency.

Harvesting and post-processing of cannabis flowers

The time of harvest and post-processing are crucial for the quality and taste of your cannabis flowers.

Determining the optimal harvest time

The optimal harvest time is determined by the maturity of the trichomes. Harvesting early can result in less potent flowers, while harvesting too late can reduce THC levels. Make sure to harvest the plants in the early morning hours when the cannabinoid concentration is at its highest. Trim the plants carefully and avoid damaging the delicate flowers.

Drying and curing the flowers

After harvesting, the flowers must be thoroughly dried and cured to maximize flavor and potency. Hang the flowers upside down in a well-ventilated room at a temperature of 18-24°C and a humidity of 45-55%. The drying process usually takes 7-10 days. After drying, the flowers should be cured in airtight containers at a humidity of 60-65% for at least two weeks. This will enhance the flavor and ensure even moisture distribution.

With these detailed steps and proper care, you can ensure that your cannabis flowers are of the highest quality and provide an unparalleled experience.