The Flowering Light Cycle is the cycle you set your High Pressure Sodium Lights on to bud your marijuana plants. There is a basic light cycle and a more experienced growers light cycle for flowering and harvesting marijuana buds. In order to become successful with indoor marijuana growing, you need to know what light cycle to set your grow lights on as well as how many hours a day and how often they come on. I will show you a light cycle that will save you 50% of your production costs while gaining 30% more production, as well this advanced light cycle will cut your vegetative and flowering time by 25%.
Basic Light Cycle for Flowering Marijuana
The most common and basic cycle to set your high pressure sodium lights on for marijuana flowering is the 12 on 12 off cycle. This 12 hour light cycle is the maximum amount of light you should ever give your marijuana plants when they are in the flowering stage, producing marijuana buds. Anything more than 12 hours of light will signal the plant to continue growing in the vegetative stage, not allowing the plant to bloom and flower buds. I prefer to run my bud lights or flowering stage lights at night when the temperature is cooler for the indoor garden. If you are growing illegally, you may want to consider putting your lights on from 6pm-6am as the electric company employees do not work those hours and will not ever see your electric meter spinning at a fast rate.
Advanced Flowering Light Cycle
This advanced light cycle will save you time, money and increase overall production by up to 50%. This flowering light cycle is based on plants that are a 9 week flowering strain. Heres a breakdown of how you should set your timers for your HPS lights in your flowering or bud room:
Weeks 1-2: Set your timer for 11 hours on and 13 hours off.
Weeks 3-4: Set your timer for 10.5 hours on and 13.5 hours off.
Weeks 5-6: Set timers on for 10 hours and off for 14 hours.
Weeks 7-8: 9.5 hours on and 14.5 hours off.
Week 9: set timers to 9 hours on and 15 hours off. this is the final week of flowering and you should be “flushing” your plants to remove all chemicals and nutrients from the roots.
This is the best and most efficient way to set your timers for the Flowering Light Cycle.
Have used advanced veg cycle (12-5.5-1-5.5) to great success from clone. Can this also be used from seed and if so when do you start it?
yes u can use this anytime as long as the plants are healthy enough to start flowering.
Can I use the sun for part of the 12_12 time for flower cuz I only got flourescent tubes which I will use warm white for flower also
u could although going from sun to flourescent may cause the plants to go into shock. maybe test it on 1 for a few days make sure it works
Can anyone can tell me, I came back to find my Hps lamp hadnt come on at the time it was meant too, it was off for 3.5hours over the time it should have fired up, my worry is; its 4 weeks through the 12/12 cycle. Does that sound like it will cause a problem to the crop?
no
I have 3 strains going. One matures around 7 weeks so when should i start flowering? The other says its ready to be harvested 8-9 weeks from seed so when should i start flowering her? Both are feminine and are said to have short flowering times
start whenever u want . the loger u wait, the taller and bigger the plant will be.
u r growing autos not photos.if it said 8 to 9 weeks from seed to harvest is a auto flower u can leave the light at 20-4 and it will bud out with out changing the lights time. the one that said matures n 7 weeks may r may not be a auto may be a photo. just leave it n the room with the rest and if it is a photo after the others r finish and u cut them and the other hasn’t started flowering then cut the light back to 12 and 12
Hi. This is for Dizzle hopefully. Very quickly, I have taken as much of your advise as possible. Far more experienced growers than myself mocked me and doubted the light cycles until they saw results. Now they are doing the same. What I would like to know is what flowering cycle do you use for a 6 week or an 8 week flower. Is there a formula, do you just knock 2 days off per week or just knock off the last week of 9 hours. Thanks again, your videos especially have helped me get through what has been a very successful first grow.
plants with quick flowering times like 6-8 weeks, i just use the 12/12 cycle the entire time.. works the best!
OK, help me out here, I have plants that are 8 week cycle on 13/11 2 weeks in, would you just keep it at that or reduce light by half hr increments ?
just keep it. nothing wrong with it