Do Buds Grow at Night or During the Day?

Hello there, budding cannabis cultivators!  Get your green thumbs ready as we explore a hotly debated topic in the world of weed cultivation – Do buds grow at night or during the day?  That question is as timeless as the chicken or the egg conundrum, but fear not; we’re here to shed some light (pun…

Do Buds Grow at Night or During the Day?

The Influence of Light Cycles on Cannabis Growth

The Influence of Light Cycles on Cannabis Growth

Like humans, cannabis plants have their daily routines influenced by light cycles

They do the plant equivalent of Netflix and chill during the night and transform into busy bees when the sun shines.

To be a little more scientific, cannabis is a photoperiodic plant that alters its growth and development in response to light changes. 

The daily light-to-dark ratio determines whether our green friends focus on vegetative growth or move into the flowering stage.

For instance, a 24/0 light schedule (24 hours of light and zero darkness) encourages plants to stay in the vegetative stage. 

That can lead to bushier, more compact plants.

Conversely, an 18/6 light schedule (18 hours of light and 6 hours of darkness) tends to cause plants to grow taller.

The Role of Photosynthesis in Bud Growth

When the sun’s up and shining, cannabis plants get to work. 

Photosynthesis, the process by which plants convert light energy into chemical energy, kicks into full swing. 

This process allows plants to produce glucose, their energy source, which is then stored for later use.

Think of it like saving money for a fancy new gadget.

Every bit of sunlight the plant absorbs is like adding a few dollars to its piggy bank.

Understanding Darkness and Bud Development

While daylight allows for photosynthesis and the accumulation of growth energy, darkness also plays a crucial role. 

When the lights go out, the plants get down to the real business – growth.

An uninterrupted dark cycle triggers the production of a florigen hormone, which signals the plant to switch from the vegetative phase to the flowering period

Indoor growers often mimic this natural light cycle by setting a 12/12 light schedule (12 hours of light and 12 hours of darkness).

So, while it may seem like your plants are just taking a break during the dark phase, they’re actually setting the stage for some serious bud production. 

Imagine it like the intermission during a play – the actors are backstage, getting ready for the next act.

The Impact of Daytime Growth on Bud Formation

The Impact of Daytime Growth on Bud Formation

Now, here comes the moment of truth. 

Do buds grow during the day or night? 

The answer is both. Yes, you read it right. 

Plants store energy during daylight hours, which is then used for growth during the darkness.

They use the glucose stored from photosynthesis and oxygen during the dark phase for growth and development. 

But, significant bud development also happens during the light hours when plants are actively photosynthesizing and directing energy to bud formation.

Anecdotes and Observations

Cannabis growers have their unique growing strategies and have observed different patterns. 

Some growers swear by their mother’s favorite strain that buds grow more at night. 

On the other hand, others insist that their plants stretch and grow when the lights are off but develop buds during the day.

It’s almost like deciding whether to have your favorite strain of cannabis as a wake-and-bake treat or as a good-night puff. 

It’s all a matter of personal preference and observation!

Debunking Common Misconceptions

Now, don’t be fooled by some common misconceptions out there. 

No, your plant won’t necessarily mature faster if you reduce its light period to hasten the flowering stage. 

Instead, it could lead to reduced yields. 

Also, longer nights do not always mean larger buds, just as binge-watching gardening shows doesn’t make you an expert botanist (sadly).

The Importance of Proper Light Cycles for Bud Production

Let’s cut to the chase – messing with the light cycle could be the equivalent of skipping breakfast or pulling an all-nighter for your plants. 

It could lead to stress, lower yields, and poor-quality buds.

The key takeaway is that a balanced light schedule is vital. 

Both the daylight and nighttime periods contribute to different aspects of plant growth. 

So, whether your buds grow in the dark or during the light hours, remember to respect the light-to-dark ratio your cannabis plants crave.



Cannabis, like any other plant, thrives on a balanced routine. 

To answer the question, “Do buds grow at night or during the day?” – it’s both! 

Daytime allows for photosynthesis, and night promotes growth and development using stored energy.

Now that we’ve solved this little mystery, you’re one step closer to becoming a cannabis cultivation master. 

Remember, like humans, plants need both work (light) and rest (dark) to function best.


How long after switching to 12 12 will I see buds? 

Buds usually form within 1-2 weeks after switching to a 12/12 light schedule.

What stage do buds grow the most? 

Buds grow the most during the flowering stage, from the end of the vegetative stage until harvest.

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