Every grower wants to give their buds enough time to swell and mature before they harvest them. It helps to know when the buds stop growing so that you don’t bring the cut too soon.
The buds begin forming after the stretch. Stretch refers to the first week or two of flowering when the plant grows aggressively before starting to flower.
After formation, the buds develop through the weeks, getting bigger day by day until the single buds joint into one big cola.As the buds continue to grow, the leaves around the buds will become stickier with trichomes. Thus, as the size increases, the buds’ resin glands also mature their contents.
When Do Cannabis Buds Stop Growing?
The buds will stop growing in the last two weeks of flowering. During the last two weeks, the buds will continue to nourish their chemicals, but growth stops. These last weeks are necessary for maturing the cannabinoids, terpenes, and flavonoids— not increasing the bud’s size!
For most strains, most of the bud’s growth happens between weeks 4-6 of flowering. The buds are at the peak of their growth, but towards the end of flowering, the plant will shift to making the buds as potent as they can before harvesting.
By the end of week five, you should notice the sticky trichomes on the outsides of the buds and the leaves surrounding them. The sticky, frosty crystals on the buds are cannabinoid-rich trichomes.
They give the buds their potency, and the plant focuses on weaning them when the buds are done growing.
The trichomes will change color multiple times during the bud’s development until they’re ripe for harvesting. And in the end, they’ll tell you when the time is right for harvesting.
You shouldn’t worry about cutting the buds before they’re grown to their optimum sizes. Growers never rely on the size of buds to tell when to harvest.
When the time is right for harvesting, the plant will communicate it in kind. The trichomes will change their color from clear to cloudy-white to amber.
The best time to harvest is when most trichomes have turned cloudy-white but yet to turn amber.
Because the buds mature at a slightly different pace, a few trichomes will still be clear while others shall already be amber.
If you wait for all the trichomes to turn amber before you harvest, the THC will begin to degrade. Only wait longer when you want buds that are higher in CBD.
Using the trichome colors rarely lies, but the best way to know the right time to harvest is to use a jeweler’s loupe or a magnifying glass to study the trichomes closely.
How Much Weight Do Buds Gain In The Last 2 Weeks?
During the last two weeks, the buds will not grow much and so don’t expect much weight increase. However, the buds will tighten up, and that adds a little weight to your harvest.
But the amount of weight the buds will add during the last two weeks of flowering largely depends on the strain.
Some strains, like Big Bud, will pack a lot of weight, and the last days can show a significant weight increase on the buds.
What To Expect Last 2 Weeks Of Flowering
The last weeks of flowering will present you with several noticeable changes. First, the once clear and transparent trichomes will appear milky white, brownish, or amber.
As flowering comes closer to the end, the buds production will slow. As the trichomes begin to turn from cloudy-white to amber, there’s no more growth for the buds.
Also, most growers flush during the last 2 weeks of flowering. Thus, you will see the plant’s leaves turning yellow and dropping as the plants run low on growth hormones.
Expect the bud’s smell to get stronger—the reason why you need to use effective carbon filters to keep the smell in control.
Some strains will have a lot of brownish hairs covering the buds. Use a magnifying glass to examine the bulbous trichomes before harvesting. When the strain has lots of brown hairs, the trichome’s color changes can be misleading.
Do Cannabis Buds Grow At Night?
The buds grow both during the day and at night. During the day, the plant uses light energy and Co2 from the environment to make sugars that they use in growth. The sugars produced during the day don’t get depleted and continue to fuel the plant’s growth at night.
The dark period is never a dormant time. The plant doesn’t stop respiring when the lights go out. The stomata open and closes, exchanging air with the environment.
However, the plant gives out more oxygen during the day because of the labor associated with photosynthesis. At night, the plant doesn’t give out much oxygen because photosynthesizing stops when the light stops.
But respiration continues constantly. At night the stomata will release oxygen and water vapor as waste after breaking down the sugars.
The dark time is crucial for the plant’s growth. It signals when to begin flowering photoperiods.
The dark phase also gives the plant a break from photosynthesis to focus on development.
Do Cannabis Buds Absorb Light?
The buds are green and contain chlorophyll. They can trap light and absorb it for photosynthesis. However, being smaller in size, the leaves on buds won’t trap as much light as fan leaves.
In summary, the buds will stop growing during the last two weeks of flowering. The buds shall have done most of their growth between weeks 4 to 6. These last two weeks only help nourish the buds for potency, great taste, and aroma.