What Light Cycle For Weed?

What Light Cycle For Weed

3. Vegetative Growth –
Once a seedling develops 7 sets of pointed leaves, it enters vegetative growth.
After being relocated to a larger pot, the growth of a cannabis plant soars. It’s stem become thicker and grows taller, it produces more leaves, nodes, and branches, and its root system becomes more established to prepare for flowering.
This is the stage where growers will begin topping and training plants.
The spacing between nodes displays what kind of cannabis you are growing. A node is where any two branches intersect off the main stalk. When a plant is young, nodes develop in pairs. When a plant has matured nodes start to alternate. They still develop in pairs but there is more distance between them and branches are no longer parallel to one another.
There are also secondary nodes on branches that have developed from the main stalk.
Sativa plants are lanky and don’t have as many leaves while Indica plants are shorter and denser.
During the vegetation stage, it’s important to increase water to aid in the plant’s development. As your plant grows larger and the roots grow outward, it’s better to water farther away so that the tips of the roots can more easily absorb it.
During this stage your plants need an increase in warm water, a flow of moist air, nitrogen and potassium-rich nutrients, and a lot of soil space to allow them to grow 2-3 feet tall.
Similar to the seedling stage, during vegetative growth, cannabis plants should be in well-drained soil. It’s important to let the plants dry out between watering to ensure they do not drown.
The growth of the plants is based on the rate leaves gather light and transform it into photosynthesis.
For indoor grow rooms, plants should be kept on an 18-hour day light cycle with a 6-hour night period. You can keep your plants on a 24-hour light cycle but plants tend to do better when given breaks and it will save you some money.
Fun fact: Since light cycles control when a plant goes from the vegetative stage to flowering, they can be kept in vegetation forever. This is a tactic used to skip the germination stage and grow plants from cuttings.


When should I switch to a 12 12 light cycle?

Changing from Veg to Bloom – Plants require at least 13 hours of light each day to remain in veg; a few “long” nights may be sufficient to induce flowering. When plants receive at least 12 hours of ‘continuous’ darkness each night (12/12), they begin to bloom.

  • This must continue till harvest.
  • Even if darkness is momentarily broken, blossoming will be inhibited.
  • In fact, plants may return to their vegetative state if 12 hour nights are not maintained.
  • Utilize a timer to maintain consistency.
  • For outdoor cultivation, light deprivation measures are required to induce blooming when nights are too short.
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When to change? There are two primary factors: • Age of plant: “Cuttings” may be exchanged whenever desired; however, for optimal yields, it is advisable to wait until the clone has developed a strong root system (typically 2-3 weeks old). If room and time are available, a 6-8 week veg phase will produce greater harvests from “seedlings.” Alternately, they can be transplanted immediately after germination; nevertheless, they are physically incapable of flowering until they are around 3 weeks old.

  • Height of plant: During flowering, plant height often doubles, depending on the strain.
  • Therefore, if ‘room’ height is restricted, the changeover to 12/12 must occur no later than when the plant reaches 50 percent of the ‘available’ height (remember to consider the minimum gap distance between lamp and foliage).

Topping and LST (see section) are extremely beneficial ways for maintaining plants short and bushy, and will assist facilitate a lengthy vegetable (6-8 weeks) if necessary. What Light Cycle For Weed

Weeks 4-6: Buds Fatten Up – At this point in the cannabis flowering cycle, the buds are growing larger. They’ll still have protruding white pistils, but you’ll be able to observe the buds becoming larger each day. At this stage, the “stretch” is about complete, and you may lower the quantity of plant training.

You must also ensure that your buds and colas are standing upright. Support them with netting or ties, and do not flatten them. If your buds get too heavy, you will need to reinforce them with netting or ties. Due to the fact that your plants are not producing many new leaves at this point, you must handle the remaining ones with care.

It is fine to clip away leaves that are blocking over your bud sites, but keep in mind that healthy leaves act as nutrient storage for the plant! At this time, the pistils will likely still be white, but watch those buds grow! What Light Cycle For Weed

Can plants grow with 14 hours of light?

PFR: the Hormone That Never Stops Producing – There are two primary lighting cycles for vegging your plants: leaving the lights on for 18 hours and turning them off for 6 hours, or running the lights 24 hours a day during the vegging period. Your plants require a great deal of light to create a robust root system, allowing them to produce foliage that absorbs more light throughout the blooming and fruiting seasons.

  1. Those that employ 18/6 light cycles do so because it more closely resembles the natural sunlight that plants get.
  2. It’s also a good idea to give your plants some rest, particularly while they’re young (you don’t want to burn young plants).
  3. However, while plants normally have a rest time, it is not required during the vegging stage.
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Remember that PFR instructs your plant to postpone blooming, and as long as it receives enough light, it will not switch to the neutral PR. You’ll need around 14 hours of sunshine to prevent many of your plants’ PFR from converting to PR. Your plant may begin flowering faster than planned if it receives less light, but excessive light will not hurt it.

We are all aware that throughout the vegging phase, your plants reach for light in order to continue producing roots and leaves for flowering locations. The longer they develop without 10 or more hours of rest, the larger they can potentially become, which could result in more blooming sites and fruit.

Consequently, it makes sense that some growers choose to use continuous light for 24 hours throughout the vegging period. You may even lengthen the veg period to get the plants to the desired stage before the major transition. Remember that your plants should never receive fewer than 14 hours of light during the vegging period unless you want them to begin flowering prematurely.

FACTOR #4: GROWING METHODS – The switch can be affected by several growth techniques, including the sea of green (SOG) method, the screen of green (ScrOG) method, lollipopping, and super cropping. Depending on the strategy you select, your flowering period may likely vary.

  • Forest of Green (SOG) This technique involves blooming plants early enough that they generate only a single big bud.
  • This technique is typically applied with densely packed indica strains in the grow area.
  • Using this technique, plants should bloom between 15 and 30 centimeters in height.
  • Display of Green (ScrOG) This approach employs a horizontally stacked mesh screen over the plants.

The screen is normally positioned 30–60 cm above the plant base. This helps them to continue growing throughout it. This approach requires plants to remain in a vegetative condition for many weeks longer than the SOG method. Lollipopping Lollipopping is a procedure involving the removal of the plant’s lower growth that receives little or no light. Due to the fact that plants require light to flourish, these areas will generate fewer buds and deplete the plant’s vitality that may be better utilized elsewhere.

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By eliminating the lower leaves and bud sites, the plant is able to concentrate its energy on the top colas, which produce denser, thicker buds. Typically, this approach incorporates a height-dependent blooming switch. Due to its rapid growth throughout the blooming cycle, Sativas are often replanted between 30 and 45 cm tall.

When Indicas reach around 100 cm in height, they are swapped, allowing them extra time in the vegetative condition. Super Cropping This technique is intended to produce extremely high yields from a small number of plants. Therefore, plants cultivated using this method must remain in the vegetative stage for a longer duration. Super cropping includes bending down top branches to allow more light to reach the plant’s lower portions. This maintains the plant’s height during the grow and enables a longer vegetative phase.

Does longer veg imply higher yield?

Dear Dan, I have a query that I have been unable to solve based on my 5–6 plant personal grow. I normally let my plants to vegetate for at least 5 to 6 weeks, but I sometimes allow them to vegetate for up to 8 weeks. My question: Is there an ideal period of vegetative time for maximizing yields? For instance, if four weeks of vegetables yield 45g per plant, would eight weeks of vegetables typically yield more? Then how about ten weeks? I have experimented with Veg time but have not reached any definitive findings.

  • Hi4daze – Dear Hi4daze, There is no optimal length of time to maintain a plant in the vegetative state.
  • You determine how long it will take your plant to develop leaves and branches under 18 to 20 hours of light, and then you trigger blooming with 12 hours of light and 12 hours of darkness.
  • The longer you leave your plants in the vegetative stage, the larger they will become, resulting in more harvests from longer vegetated plants.

The disadvantage of a longer vegetative stage is that it lengthens your growth timetable and provides more opportunity for things to go wrong along the road. Consider that vegging a plant for three months is a waste of effort with declining results the longer you do it.

I typically advise a week of vegetative growth for every gallon of growing material (ie: a plant grown in a 5-gallon bucket should get about a 5 week veg). Most individuals veg their plants for between two weeks and two months, however there are Sea of Green growers who barely veg and giant plant specialists who go longer.

It is essential that the plants remain healthy throughout this crucial growth period. Thus, they will be prepared to produce many blooms throughout the blooming stage.