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Issue #522 - Sunday, April 17, 2022
Dear Fellow Grower,
In today's issue...
- Uh oh...it's another acronym to introduce to your cannabis growing vocabulary. What is DLI and how does it relate to cannabis growing? Can it help you grow better or are you better off without it? We'll quickly educate you on the subject so you can decide if you think DLI is worth worrying about or not.
- Side-by-side grow journal update: Plants have taken over the tents, and I also have a fun little side project to share!
- Why are LED grow lights so good for growing plants in heat? Part of it has to do with leaf surface temperature. Today I did a little experiment with a temperature gun to help you see with your own eyes!
- There are so many tasty looking colas in the "Trophy Picture of the Week" section that if you're like me, you'll get the strong urge to pluck a few colas from these various strains. When is someone going to make a multi-strain cannabis buffet you can pick through? Oh wait, you can already do it at home! Start with a visual tour today, then grow your own multi-strain buffet!
Nebula Haze & Sirius Fourside (founders of GrowWeedEasy.com)
"Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less."
~Marie Curie
How to Increase “DLI” for Bigger Yields (Daily Light Integral Tips)
🌞💡🤷♀️💡🌛
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What is “DLI” (daily light integral) and how can you increase it for bigger yields?
Definition: DLI stands for daily light integral. It describes how much light in the PAR (Photosynthetically Active Radiation) range is delivered within a 24-hour period to an area. “Daily” because it’s how much in a 24-hour period, “Light” because it measures photons, and “Integral” because scientists need to use an integral (calculus term) to calculate the DLI.
DLI is a measure of the total number of photons in the PAR range received in a day for a specific space. Imagine a bucket that catches photons. DLI measures how full the bucket is after 24 hours.
What does that actually mean? Light is made of many photons, but scientists have found plants can only use photons in a certain range on the spectrum, which they’ve named the PAR range. That’s why DLI is such a useful measurement for growing cannabis. If you imagine photons raining down on your plant like rain, DLI is like if you took a container and captured only PAR photons for a day, then counted
the number of photons in the bucket. Essentially, it tells you how many usable photons land on your plant in a day.
Why is DLI important to you as a marijuana grower?
Because increasing your DLI (properly) is an effective way to increase yields. A higher DLI increases total photosynthesis and drives cannabis plants to produce big buds in the flowering stage. To a point, of course, too much light can harm yields.
The right DLI results in faster growth and bigger buds. These cannabis plants were grown under a Mars
Hydro TSL 2000 LED (here’s the full grow journal) and given excellent DLI to produce over 10 ounces at harvest.
What is the optimal DLI for cannabis plants?
Healthy mature cannabis plants typically thrive in...
(Learn how to give your plants perfect DLI)
Side-by-Side Grow Journal Update: Tent is almost filled!
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“Defoliation tent” on top with “Natural tent” on bottom (both tents have received identical treatment so far but that will be changing next week). Click here for the full journal plus more information about this defoliation experiment.
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Almost time to start flowering! – April 16, 2022
The plants have hit their stride under the HLG 300 R-Spec LED grow lights. I can see brand new leaves appearing every day.
I suspect that next week the plants will have completely filled the grow space so I will be ready to start a 12/12 light schedule to initiate the flowering stage. And that means the "defoliation tent" is going to receive its first defoliation, followed by a second defoliation 3 weeks later. The "natural" tent will not have any leaves removed. I will leave it
completely untouched. That means there will be enormous differences between the two grow tents soon.
BONUS PLANT IN A MINI TENT
I had extra mother plants from the beginning of this experiment and decided to start growing a few of them out in mini tents with tiny LED grow lights I have lying around.
I decided to start making grow journals for them too. I've only done one so far but if you're interested in seeing a mini tent grow journal with a plant that was trained like this, check it out!
LED Grow Lights and Leaf Surface Temperature
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I thought you might think this was interesting. I just wrote an article about the best cannabis grow lights for a hot grow room, and one of the main takeaway points is to use LED grow lights. And one reason is that LEDs do not raise the temperature of a leaf nearly as much as other types of grow lights. As a result, LED plants actually do pretty poorly in the cold but thrive in the
heat.
I wanted to show that to you with numbers.
Note: A temperature gun ($35) is a fun and handy tool. You point it at something and pull the trigger to get the temperature of that surface.
The air of the grow tent is about 77°F. When I use my temperature gun to measure the temperature of the side of the grow tent next to plants, the surface temperature is about the same as the air temperature.
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However, if I point the temperature gun directly at a leaf, the surface temperature of the leaf is several degrees colder than the temperature of the air or the sides of the grow tent.
In the past, when I’ve run this same test on plants under HPS and LECs (bulb lights), the leaves that get direct light from the bulb have a much higher surface temperature than the air. That’s because bulb lights give off infrared light that raises the temperature of a leaf in addition to providing light. LEDs give off less infrared light and therefore do not raise the internal temperature of a leaf nearly as much. As a result, you can
have a much hotter grow space with LEDs and the plants stay cool on the inside. This makes LEDs perfect for any grower dealing with heat.
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"Thought you might like this quote:
'Cannabis is the gateway drug to gardening.' ~Vice"
~Peter
You were right, I do like this quote! ~Sirius
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"Great content every week. Thank You Nebula Crew"
~James
I am honestly glad that you enjoy the articles! ~Sirius (1/2 of Nebula Crew)
"Thanks guys for helping me do this the right way."
~Donald W.
If you feel you're doing it the right way, I bet you're already seeing positive results 👍 ~Sirius
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"Do you know what strain they are?"
~Rick
Unfortunately, it's nearly impossible to tell the strain of a cannabis plant on sight unless it's a strain with unique physical characteristics like ABC, Ducksfoot, or Grinspoon. I have a feeling you'll be happy either way, though. ~Sirius
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"Day 55 - White Tahoe Cookies
Using a Wireless/USB Digital Microscope (Amazon)
Best Investment!"
~SwitchH20
Absolutely glorious! 🤩 ~Sirius
"Here are the actual before and after pictures if you prefer them to the Fat Stanley album cover! Haha! You guys Rock!
P.S. Nebula last week you said you wanted to grow new fun ways as seen in the trophy pictures....say tuned...I have something fun coming soon!"
~Coco Lopez
I'm really interested in seeing your new fun way of growing. I'm always up for a weird and entertaining grow! ~Sirius
This next part gave me a good chuckle. Thanks, Coco Lopez!
"Strain - DoubleBlack. Flowering period week 5"
~Growstar87
They're already pretty big; I bet these will produce healthy-sized yields. ⚖ ~Sirius
Quick Guide to Plant Problems
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Zoinks! Like, watch out for Scammers!
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I always hated how dry their sandwiches looked, but I hate scammers more.
It was old-man Scammer all along!
If none of these jokes seemed familiar, you didn't watch Scooby-Doo growing up! Here's a recap: A stoner, his talking dog, and their three preppy friends bust scammers on a weekly basis while being scared the whole time. Although it would be nice if you could personally bust real-life scammers and put them in jail, ensuring they're unsuccessful is the next best thing you can do. Plus keeping money out of scammer's hands helps us all by making them less likely to
scam next time.
Next time you think you smell a scam, hit them with the old cartoon running start (instructions below).
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Remember when it comes to buying seeds: Real seed businesses don't contact you. They let you contact them. If anyone messages you to sell you seeds on social media, look out! It's possible they will take your payment and send nothing. Always take a second to think before sending money to anyone, especially if they contact you (whether by DM, text message, phone
call, email, etc.).
Recommended Cannabis Seed Sources
These sources have gotten great reviews from our readers:
- Seed Supreme – California, United States
- ILGM (I Love Growing Marijuana) – California, United States
- Herbies Seeds – Europe (seemingly out of the UK and Spain)
We encourage you to forward this email to a friend in need!
GrowWeedEasy.com has hundreds and hundreds of pages!
Check out some articles you may not have seen...
- PSA: Cannabis Can Get Too Much Light?! - Wait, what do you mean cannabis can get too much light?! Back in the day, we thought that more was always better, but the short of it is that technology has developed to the point where we can oversaturate a
plant with light until it suffers adverse effects.
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Cannabis Light Schedules: Vegetative Stage vs Flowering Stage - This could also be called "Cannabis Light Schedules: The most important thing to know about cannabis if you actually want buds". It's way too long of a title, though. Also, autoflowers make that title a bit
inaccurate since they don't care too much about light schedules. Speaking of which...
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Best light schedule for auto-flowering strains? - If autoflowers don't need a specific light schedule to flower, do light schedules matter to them at all? Yes! It's essential to make
sure your autos get plenty of light without stressing them out by trying too hard to maximize yields. Read the article above for more info.
- Nebula’s Guide to Cannabis Auto-Flowering Strains (2022) - This section has turned into a bit of an autoflower-fest, but I can't turn back now! If you're already this deep into reading about autos, you might as well check
out our list of auto strains we've personally tested. In fact, I'm personally testing some autos right now, which sounds way more professional than just smoking it.
Check Out Our Grow Community!
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Check out our friendly growing community to ask questions, discuss your grow, share pictures, or otherwise talk about growing cannabis with other real growers!
Ask Questions & Talk with Other Growers!
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Who Runs This
Newsletter? |
Nebula Haze:
When I first started growing, I struggled. Now, it is my mission to make it easy for new growers to get started while helping advanced growers get bigger, better yields with less time and money. We update/add articles every week. Anyone and everyone can grow if they want to!
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Learn which seed sources are recommended by Nebula Haze |
Sirius Fourside:
Sirius Fourside is a hobbyist grower who has gained the bulk of his experience growing in water as a medium (deep water culture, bubbleponics).
"Growing cannabis can be a relaxing hobby in and of itself, but it also saves you money and keeps you from having to deal with shady characters. Cannabis is much easier to grow than people give it credit for, and growing in water doesn't increase the difficulty much, if any. But whether you want to grow in water, coco, or a different medium, we'll show you how easy it can be!"
Copyright (c) 2022 GrowWeedEasy.com
NOTE: If links aren't working or if pictures are not showing up properly, please view the full newsletter here: http://archive.aweber.com/gwe-updates
Disclaimer: Grow Weed Easy only recommends products that we've either personally checked out ourselves, or that come from people we know and trust. For doing so, we may receive a commission. Nothing in this e-mail should be considered personalized Financial, Legal, or Medical Advice. The contributors to this magazine grow
legally under their local laws but are not lawyers or medical professionals. Any decision to grow marijuana should only be made after consulting with an experienced lawyer or other legal adviser. Any medical decisions should only be made after speaking with a doctor. Be safe!
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