In order for your plants to reach their full potential, strict light cycles and their respective spectrums must be maintained.ĭepending on the strain, this cycle lasts between 8 to 11 weeks. The flowering stage is often the most exciting stage for most growers as they see and smell the results of their hard work. Their carefully engineered light spectrum maximizes photosynthesis and growth and provides useful features for multiple cycles of light and growth beyond and even before the vegetative stage. A light dimmer option on the LLI allows you to moderate your lighting, and both Icarus products boasts exceptional output performance and light uniformity. Theses sleek, lightweight LED grow lights provide exactly what the plant needs during this time. You can achieve this using blue enriched light, ideally at 450nm.
The time spent in darkness enables cannabis plants to translocate nutrients and energy stored in the form of sugars, and then prepare themselves for another day of growth.ĭuring this stage, the roots and foliage of your cannabis plants can develop rapidly. Some argue for 24-hour light cycles during this stage, but that choice may lead to nutritional deficiencies and stunted growth in the final flowering stage. Lasting between 3 to 16 weeks, the vegetative stage requires full-spectrum light for 18 hours and 6 hours of darkness. Much like a human adolescent, the plant will achieve most of its vertical growth during this time. The vegetative light cycle of cannabis is when plant growth truly takes off. Once the marijuana plants have developed healthy leaves and at least 3 nodes, they move into the vegetative stage. The light cycle during this phase is a recommended light for 18 hours a day and 6 hours of darkness, mimicking an exceptionally long summer day.Īn LED blue light spectrum is optimal for the first 10–14 days and will help develop healthier leaves. While usually done with good intentions, this can result in stunted growth and lower yields. During this stage, the seedling needs fewer soil nutrients and less water than in the final two growth stages.Ī common mistake growers make during the seedling stage is overfeeding the plant. Initially, you may observe sets of 2 or 3, and then 5 or 7 as it progresses. After germination, the plant is primed to begin developing its root system, as it will require an ever-growing network of nourishment.Īs it begins growing in search of nutrients, the seedling will begin to produce sets of leaves.
SeedlingĪfter the sprouted seed are transferred to a new container, they will spend the next 2-3 weeks in the delicate seedling stage. Red light promotes germination while blue light is likely to have the opposite effect. Your plants need plenty of light in this stage typically 16 hours of light and 8 hours of darkness.Īlthough the germination stage is less significantly affected by different light spectrums when compared to the vegetative and flowering stage, it is still important to use the correct spectrum of light during this phase, which is typically red enriched light. Cannabis seed may sprout as early as 2 days and as late as 10.ĭuring this critical time, it is important to follow a routine light cycle when growing indoors. The germination stage is the first stage in the cannabis plant cycle and can last anywhere between 5 to 10 days. Let’s explore the 4 light stages for growing cannabis (also known as weed or pot) in depth below. Understanding the light cycles will allow you to properly plan your grow room. It is important to understand the indoor cannabis light cycle, so you can choose the correct grow light and spectrum for each stage. The cannabis growth cycle is categorized into 4 distinct stages: germination, seedling, vegetative, and flowering. This directly correlates to improved quality and yield and results in an improved product. By manipulating your cannabis light cycle, you can yield growth before the flowering stage in particular. Light spectrums also affect plant growth differently depending on things like environmental conditions, crop species, etc.Įxposing your plants to specific hours of light and dark in conjunction with a proper photosynthetic active radiation (PAR) light spectrum at a particular growth stage can ignite growth. Manipulating Cannabis Growth with Lightĭifferent wavelengths of light affect your plants depending on the growth cycle stage. Your light schedule is critical to the growth of your plant. Understanding the natural growth cycle of cannabis and the attendant light cycle and spectrum needs is fundamental to growing a great product indoors.Ĭannabis is a photosensitive plant meaning that the amount of light it is exposed to within a 24 hour period will trigger responses in the plant.
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