(Last Updated On: February 21, 2023)

Growing feminized marijuana seeds indoors is a popular method for cultivating cannabis plants in a controlled environment. Feminized seeds have been bred to produce only female plants, which are favored by cultivators for their ability to produce high-quality buds. Indoor growing offers the advantage of controlling the growing environment, including temperature, lighting, and humidity, to maximize the growth and potency of the plants. In this guide, we will discuss the steps involved in growing feminized seeds indoors, including the equipment you need, the best growing medium, and tips for optimal growth and yield.

Select a growth system that suits your skills and experience level.

While advanced growing techniques like Deep Water Culture can be highly effective, they can be challenging for novice growers. Coco fiber is a good alternative, as it is easier to manage and can produce abundant crops. For beginners, it is recommended to start with a soil mix purchased from a local grow shop. As you gain experience and confidence, you can try more complex grow systems. Don’t be afraid to seek help and advice from the local grow shop, as they can provide valuable information and resources. A hydroponics store can also be a great source of materials and advice for growing feminized seeds indoors.

Selecting Feminized Seeds for Indoor Cultivation

With the rise of online shopping, obtaining feminized seeds has become more accessible. While the options available can be overwhelming, it’s important to decide if you want feminized autoflower or photoperiod seeds.

Growing Feminized Autoflower Seeds Indoors

Feminized autoflower seeds have the advantage of being relatively simple to grow, and can produce high yields in ideal conditions. They are often recommended for first-time cannabis growers as they only require 20 hours of daylight and take approximately 75 days from seed to harvest. 

Growing Feminized Photoperiod Seeds Indoors

Feminized photoperiod seeds are typically referred to as just feminized seeds. These seeds have two growth stages, which are regulated by the amount of light they receive. When exposed to 18+ hours of daily light, they grow in a vegetative stage, producing leaves, roots, branches, but no buds. However, when the daily light is reduced to 12 hours, the plants enter the flowering stage, also known as the bloom phase, and start to produce buds. The flowering stage usually lasts for 9 weeks with a 12/12 light schedule, and it’s essential to provide adequate light during this time to maximize your harvest. A 600W HPS light is recommended for a 1.2 x 1.2m tent, but some growers opt for higher light levels to further enhance their yield.

Tips for Growing Feminized Seeds Indoor

Choose the Right Growing Environment

It is essential to create a suitable growing environment for your feminized seeds. This includes selecting the right growing medium, maintaining the appropriate temperature and humidity levels, and providing adequate light and ventilation.

Provide Adequate Lighting

Lighting is a critical factor in growing feminized seeds indoors. A suitable light spectrum and intensity is necessary to support the growth and flowering of the plants. HID (High-Intensity Discharge) lights such as HPS (High-Pressure Sodium) and MH (Metal Halide) are commonly used for indoor cannabis growing.

Control the Temperature and Humidity

Temperature and humidity play a significant role in the growth and potency of cannabis plants. It’s essential to maintain a temperature range of 70-85°F and a humidity level of 40-60% during the vegetative stage, and a temperature range of 60-70°F and a humidity level of 30-50% during the flowering stage.

Monitor and Adjust Nutrient Levels

Proper nutrient management is necessary to support the growth and health of your feminized seeds. It’s important to monitor the nutrient levels and pH of the growing medium, and adjust as necessary to ensure optimal plant growth.

Practice Proper Pruning Techniques

Jeffrey from Mr Cannabis Seeds says, pruning is an important technique in indoor cannabis growing, as it helps to promote bushier, more productive plants. Pruning should be done during the vegetative stage, removing the lower branches and any growth that is crowding or shading the center of the plant.

Manage Pests and Diseases

Pests and diseases can be a significant problem in indoor cannabis growing. Regular monitoring and prompt treatment are essential to prevent the spread of these problems and maintain the health of your plants.

By following these tips, you can ensure a successful growth of feminized seeds indoors. Remember to always do thorough research and consult with experts if necessary to maximize your yield and potency.


In conclusion, growing feminized seeds indoors requires careful planning and attention to detail. By providing adequate lighting, controlling temperature and humidity, monitoring and adjusting nutrient levels, practicing proper pruning techniques, and managing pests and diseases, you can grow healthy and productive cannabis plants. Examples of feminized seeds include Afgooey which until now was a clone-only strain. Other popular feminized seeds include strains like Blue Dream, Northern Lights, and Gorilla Glue, each known for their unique effects and growth patterns. By following these tips, you can ensure a successful grow of feminized seeds, including popular strains like Afgooey, Blue Dream, Northern Lights, and Gorilla Glue, and enjoy a bountiful harvest of high-quality cannabis.

Written by Kathy Cooley