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cannabis grow light time

Cannabis grow light time

Vegetative – Seedling or clone leads to Vegetative Stage –
Give 18-24 hours of light a day

So indoor growers have a choice to flower their plants whenever they want… When is the best t ime to start flowering your cannabis indoors?

Once the plant is changed over to the flowering (12/12) light schedule, there is generally another 6 weeks-5 months (average 2.5 months) before the plant's buds are ready for harvest.

What keeps cannabis in the vegetative stage?

Cannabis grow light time

Whether you’re planning on growing indoors or outdoors, knowing the best light schedule to follow will help maximize your yield in the end. If you’re growing inside and height and space are not a big issue, letting your plants stay in the vegetative stage on an 18/6 or 24/0 light schedule for at least 60 days (8 weeks) is your best bet to grow the most bud.

Being able to manipulate a plant’s light schedule makes it possible to achieve higher yields when it comes time to harvest. When plants are in the vegetative stage, the more light they receive the larger they will grow.

If you’re growing outdoors, all you need to do is let nature do its thing. When grown outdoors, cannabis will naturally start flowering on their own. This typically happens after June 21 st , when days begin to become shorter.

This isn’t to say your plant will stop growing and only produce flower at this point. On average, plants will double in height after the begin the flowering stage both indoors and out. When growing outdoors, however, it’s extremely important plants aren’t exposed to light during the 12 hours they’re supposed to be in darkness. Even streetlights or floodlights can disrupt the flowering period. So, if you’ve got that neighbor who leaves on a floodlight all night that shines on your plants, you might want to see if they’d be willing to put it on a sensor.

Light Cycle for Outdoor Flowering Period

The key to growing indoor cannabis is mimicking what happens in nature. When grown outdoors, cannabis starts to produce flowers (buds) when the days begin to become shorter and they receive at least 12 hours of total darkness. All that’s needed to do this is to switch your light schedule from 18-24 hours of “sunlight” each day to 12 hours of light and 12 hours of darkness.

That being said, they also need plenty of light to reach their maximum potential. This is why some growers give their plants 24 hours of light each day. Stick with 18-24 hours of light during the vegetative stage and your plants will reach their maximum potential before it’s time to manipulate the light schedule to make them flower.

Even when growing outdoors, many growers will start their plants inside to ensure they can grow as large as possible. When in veg, plants should be kept under grow lights for a minimum of 18 hours (commonly known as 18/6). Some growers will keep plants under 24 hours of light during this time (known as 24/0) to allow their plants to grow as big as possible.

Vegetative Stage

Many growers will start their grow indoors under lights before moving their plants outside to grow naturally under the sun. Starting seeds or cutting clones in March or April and keeping them under 18-24 hours of light until they’re moved outside in early May or June is common.

Typically, the goal of growing weed is to have a large yield when it comes time to harvest. Whether you’re growing indoor or outdoor herb, light is one of the essential aspects of your grow. The light your plants get throughout their entire life cycle will have a tremendous impact on how much they weed they produce.