The first two weeks of the cannabis flowering phase are crucial for setting up a successful harvest. During this period, plants undergo various changes that influence flower development. Suppose you’re a grower (especially one new to the hobby). In that case, understanding what happens during this phase is a great way to give your plants the best chance at success, as well as figure out how to solve problems and raise cannabis to your specifications. Learn all you need to know about what to expect in weeks 1 and 2 when flowering cannabis plants.
What Is the Flowering Stage of Cannabis Growth?
The flowering stage marks the shift from vegetative growth to the production of flowers. This phase determines the quality and quantity of the harvest at the end of the process. During flowering, cannabis plants redirect their energy from growing leaves and stems to developing buds, which are the prized parts for consumption.
Typically, the transition from the vegetative to the flowering stage is triggered by altering the light cycle. Most cannabis strains require about 12 hours of light followed by 12 hours of darkness each day to flower. This change mimics the natural shift in seasons, signaling to the plant that it's time to start flowering.
Growers can fine-tune their growing conditions by understanding and taking advantage of these aspects of the flowering stage, boosting the chances of a successful harvest. Recognizing the needs and signals of this phase helps home growers make smart choices that foster healthy flower development and maximize their efforts.
What to Expect in Week 1 When Flowering Cannabis Plants
Cannabis plants undergo many noticeable changes during the first week of flowering. Branches start to stretch and pre-flowers appear, signaling the plant's shift toward flower production. Adjusting the light cycle to 12 hours of light and 12 hours of darkness encourages this transition to continue.
You’ll need to keep a close eye on plant health and environmental conditions during this stage. Ensure your plants receive the right amount of water and nutrients, and watch for any signs of stress or pests. A stable environment helps plants transition smoothly into flowering.
Hormonal Changes and Initial Flower Development
During the first week of flowering, cannabis plants experience significant hormonal changes that signal the start of bud development. These hormonal shifts, primarily involving gibberellins and auxins, are the catalyst for transitioning the plant's focus from vegetative growth to reproductive development.
As these hormones increase, you may notice the emergence of pre-flowers, which are small structures that appear at the plant nodes. These pre-flowers are early indicators of flowering and are often accompanied by the appearance of pistils, the hair-like structures that will eventually develop into full buds.
Adjusting the Nutrient Regimen for Flowering
As cannabis plants enter the flowering stage, their nutritional requirements shift significantly. During this time, it’s up to the grower to gradually transition from a nutrient regimen focused on nitrogen (which supports leafy growth) to one high in phosphorus and potassium. These nutrients promote robust bud development and overall plant health.
Start by slowly reducing the nitrogen levels in your feed while increasing phosphorus and potassium to support the plant's energy needs during flowering. It's important to make these changes gradually to prevent nutrient shock, which can stress the plants and hinder their growth.
To simplify things, you can use a well-balanced pre-made flowering nutrient formula that provides the necessary elements in the right proportions to ensure that your plants thrive during this critical phase. Remember to regularly monitor your plants for any signs of nutrient deficiencies or imbalances, such as yellowing leaves or stunted growth, so you can adjust your feeding schedule accordingly.
What to Expect in Week 2 When Flowering Cannabis Plants
The second week of flowering brings even more changes to how your cannabis plants will grow. As they transition into full bloom, bud sites become more defined, and you may see an increase in the density of pistils as they prepare for further development. This is also when the plant's energy is increasingly directed towards flower production.
During this period, you must continue monitoring the light cycle to ensure the plants receive a consistent 12/12 light-to-dark ratio. This consistency helps reinforce the plant's flowering signals, aiding in the seamless progression of bud development. Additionally, keep an eye on the plant's health by checking for any signs of nutrient imbalances or stress, which can impede growth if not addressed promptly. Structural support may also be needed, and you’ll have to focus on maintaining the optimal environmental factors to achieve the best growth.
Monitoring Growth and Managing Plant Structure
Monitoring growth and managing the structure of your cannabis plants are your main concerns during the second week. As the plants continue to stretch and the buds begin to form, implementing support techniques such as trellising or staking can be beneficial to prevent branches from bending or breaking under the weight of developing flowers.
Pruning also improves light penetration and air circulation within the plant canopy. Selectively remove lower leaves or branches that receive less light so you can direct more energy to the top buds, enhancing their growth potential. Proper spacing between plants allows for sufficient airflow, reducing the risk of mold and other moisture-related issues that can compromise plant health.
Environmental Considerations for Optimal Flowering
Keep an eye on temperature and humidity during the second week. Aim for temperatures between 68-80°F (20-26°C) to support robust flower development while minimizing the risk of heat stress. Humidity should be maintained at around 40-50% to prevent mold growth and other moisture-related issues that can compromise bud quality.
Proper ventilation is also crucial for maintaining these conditions. Use fans to circulate air and prevent the formation of hotspots within your grow space. This also reduces the risk of fungal diseases and ensures that your plants receive adequate carbon dioxide for photosynthesis.
Common Challenges in Early Flowering and How to Address Them
Early flowering can bring challenges like pests and nutrient deficiencies. Regularly check for pests such as spider mites or aphids and act quickly to prevent damage. Nutrient deficiencies may show discoloration or stunted growth, but adjusting your nutrient regimen can help.
Care for Your Cannabis Plants During Weeks 1 & 2 of Flowering
The first two weeks of flowering are the most important for setting up a successful harvest. If you know what to expect, you should have no trouble supporting plant health and productivity. For additional help and more about cannabis, Kind Seed Co. is here to support you with expert advice and quality seeds.
