Herbie Murray
Marijuana is a popular sleep aid, with millions of Americans using it to help them sleep. However, the effects of marijuana on sleep are mixed. While it may help people fall asleep and improve sleep quality in the first part of the night, it can also lead to more awakenings and fragmented sleep in the second part of the night. Marijuana use can also decrease the duration of REM sleep, which may have implications for cognitive function, memory consolidation, and emotional regulation. As such, it is important to understand the effects of marijuana on sleep and whether it is an effective strategy for improving sleep quality.
| Characteristics | Values |
|---|---|
| Do marijuana seedlings need sleep? | Yes, they need a dark period. |
| How long do they need to sleep for? | No more than 8 hours a day. |
| How dark does it need to be? | Moonlight-dark is dark enough. |
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What You'll Learn
Marijuana seedlings and their circadian rhythm
Marijuana and Sleep
Marijuana is often used by people to help them sleep, but the evidence of its effectiveness is mixed. While it may have benefits in the short term, experts believe that in the long run, it could make your sleep worse. Marijuana can decrease the duration of REM sleep, which may have implications for cognitive function, memory consolidation, and emotional regulation.
Marijuana binds to specific receptors in the brain, sending sleep-promoting messages and reducing the brain's arousal. The way it is used can also impact its effect on sleep. For example, inhaling cannabis will have a faster onset of action than ingesting it.
There is some research to suggest that marijuana may be more effective for people who are having trouble sleeping because of chronic pain, restless legs, PTSD or MS. However, more research is needed to understand the effects of cannabis on sleep.
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The light cycle for seedlings
Some growers opt for an 18/6 light schedule throughout the lifecycle of their autos, believing that the plant needs a short recovery period of darkness. Others opt for a 24/0 light schedule, arguing that it maximises the productivity of the plant's short vegetative growth period. If you are growing your cannabis plant indoors and you do not have any issue with room height or space, then you should allow your plant to remain under 24/0 or 18/6 light schedule during the vegetative stage. This should last for 60 days, which is the best time to grow more flowers.
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The intensity of light for seedlings
Marijuana seedlings are sensitive to light intensity. They require relatively low but steady PPFD light levels of between 100 and 300 µmol/m²/s. The first two weeks of life above ground are referred to as the seedling stage, and during this time, seedlings are at risk of damage from excessively strong light.
Seedlings need time to adjust to higher light intensities, so it's important not to provide too much light too early. The intensity of light can be increased once the plant is in bloom, with a red-rich light spectrum to promote heavy yields.
Young cannabis plants expect cool, blue light in the early phases of development. Those with spectrum-adjustable LED grow lights can select blue-rich light for seedlings and veg growth.
The intensity of light can vary depending on the fixture type and facility design. Some growers invest in light meters to precisely map the light intensity in each area of the canopy at various hanging heights, allowing them to constantly keep their plants in the optimal light conditions.
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The temperature for seedlings
Maintaining a consistent temperature is crucial for germinating cannabis seeds. Fluctuations in temperature can negatively impact germination rates and seedling health.
Temperatures should consistently stay above 15°C, even at night. Cannabis seedlings thrive in bright, sunny conditions with temperatures between 21°C and 23°C. They also like humidity and a gentle breeze. If you're growing inside, the seedlings can be placed under artificial light as soon as they've sprouted from the soil.
If you're using HID lighting, keep the seedlings at least 50 cm from the bulb. If using a compact fluorescent lamp, the distance should be about 15 cm; with normal fluorescent tubes, the distance should be reduced to just a few centimetres.
Cannabis plants can thrive at even higher temperatures, up to a maximum of about 35°C, in an environment with low humidity, extremely bright grow lights, and enriched CO2 (above 1500 PPM).
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The duration of light for seedlings
The duration of light for marijuana seedlings is generally between 18 and 24 hours of daily light. However, some sources suggest that 16 hours of light is sufficient, while others recommend up to 20 hours. The optimal marijuana light schedule for seedlings is 18/6, meaning the lights are on for 18 hours per day and off for 6 hours, giving the plant darkness.
It's important to note that the right amount of light for your marijuana seedlings may depend on the genetics of your plant and can take some tweaking to get right. Additionally, the light schedule for seedlings is different from that of vegetative plants, which need at least 16-18 hours of light, and flowering plants, which need 12 hours of darkness every night.
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Frequently asked questions
Yes, marijuana seedlings do need sleep. In fact, most plants need a dark period of at least one hour per day.
Marijuana seedlings need at least one hour of darkness per day.
Moonlight-dark is dark enough for marijuana seedlings to sleep.
No, marijuana seedlings do not need complete darkness to sleep. A desk lamp placed somewhat far away without covering the seedlings will also work.
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