Northern Lights Autoflower Life Cycle

northern lights autoflower grow

The Northern lights autoflower grow life cycle is one of the fastest-growing autoflower plants among the indica strain. Upon harvest time, you get a hefty batch of sedating buds that will help you relax and find relief from pain.

Because of the fast growth rate of the Northern Lights, you only have a short window on each stage of its growth cycle to provide the plant what it needs. To help you out, here is a guide on the Northern Lights autoflower life cycle.

Germination of Northern Lights autoflower Grow

The starting point of your Northern Lights seed is the germination process. This involves encouraging the taproot and cotyledon to break out of the shell.

Before anything, you will want to use mature quality seeds. They should have a darkish brown or black color and does not have any damage on the surface. Quality seeds have a high germination success rate than low-quality ones.

Germinating seeds can be easy with the use of starter trays or pots. These containers have a biodegradable structure that retains water while housing your seeds. The material allows the seed’s taproots to grow naturally and spread outside the pot. This will happen within the first week of the northern lights autoflower life cycle.

Keep the pots hydrated throughout this period, but avoid watering them until the medium is dripping. You want the environment to be moist to prevent your seeds from drying out.

When the seeds’ root system outgrows the pot, you can transfer it onto the main medium and container. Doing so helps avoid damaging the young seedling via root stress.


During this period of a Northern Lights autoflower life cycle, the plant will have its first set of leaves. Your seedling must be in its main medium to grow towards its harvest period.

Avoid giving your seedlings any type of nutritional fertilizer or nutes. Any amount of nutrition can be toxic and damaging to them at this stage. If you are using a soil mixed with compost, place the soil at the bottom of the container and have another medium between it. This will allow the seedling to receive the benefits of the compost once it matures or reaches the vegetative state.

The young plants only need a good amount of light exposure from the sun or your grow lights. Fluorescent lights that give off a bluish light spectrum will be beneficial for your seedlings until it reaches the flowering period. The bulb you want should have a 6400K or higher color temperature.


Around the second to the third week of the Northern Lights plant, it should have multiple branches and a sizable main stalk. Your plant will be developing at a rapid pace since its new leaves will give it more energy through photosynthesis.

If you are using fluorescent lighting, make sure that the surroundings of the plant have a reflective surface. This will bounce the light towards all areas of your Northern Light plant, including its bottom area. Bouncing the light is critical when using CFL or T5 fluorescent fixtures. The lighting does not have a piercing quality that reaches onto all parts of your plant like other light fixtures.

Vegetating plants will need plenty of nitrogen to develop its foliage. It will also need a good dose of phosphorus and potassium for other biological functions. Use liquid nutrition supplements or nutes that has a high nitrogen and potassium content with some phosphorus. These nutes are ideal for your Northern Lights auto vegetative and pre-flowering stage.

Avoid using any nutes if you already have a soil mixed with compost as your medium. The nutrient from the compost should be enough for your Northern Lights plants. If the plant shows any sign of nutrient deficiency, add the appropriate nutes to correct it.

The genders of your Northern Lights plant should appear around the fourth week of its life cycle. It is important to identify any male plants that have a pollen sac instead of a calyx on its flowering site. You need to separate the male from the females to avoid unintentional fertilization. Fertilized plants will focus all of their energy on producing seeds instead of marijuana buds.


The Northern Lights will stop its growth during the flowering stage. The plants will focus their energy on producing their buds. Its calyx or flowers should be growing at a steady pace.

Switch the notes to ones that are suitable for flowering plants. Your Northern Lights auto plant will barely use any nitrogen, but it will need plenty of potassium and a good dose of phosphorus. Both of the latter nutrients can aid the plant in producing their buds.

Your plants at this stage will need different lighting if you are using fluorescent fixtures. Choose a bulb that emits yellowish to orange light. The light spectrum from this bulb encourages the plants to bud.

Stop providing your plants with any nutes around the eighth to the ninth week of its life cycle. Flush out any nutrients from the soil with water. Removing all nutrients will improve the bud’s taste.

Trichomes will appear around the leaves and buds of your plant during the final part of the flowering stage. Check on the trichomes with a magnifying glass or jeweler’s loupe. Your Northern Lights buds are ready for harvest when a majority of the trichomes have a cloudy white color. If the trichomes show an amber color, it indicates that the bud will have a powerful sedative effect due to its high CBN levels.


Following our guide will help you get the best yields out of your Northern Lights auto plants. Remember to avoid giving your plants too much nutes. Nutrient deficiency is easier to fix than nutrient toxicity.

Northern Lights Autoflower grow strain is great at helping you find relief from intense pain and stress. It should never be regarded as dangerous as other intoxicants that you see in any store such as beer or cigarettes. Barack Obama said it be: “I do not think marijuana is more lethal than alcohol”.


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