What light spectrum does weed need to grow? – Growing Cannabis 201: Advanced Grow Tips

What light spectrum does weed need to grow? – Growing Cannabis 201: Advanced Grow Tips

In this lesson learn what kind of light weed needs to grow. Find out what is the best light spectrum for growing weed, the best light spectrum for vegetative growth, flowering, seedlings, and late flowering cannabis plant growth stages. What does light do to weed at each stage of growth? Cannabis benefits from different light spectrums for each stage of plant growth, so learn what light spectrum you need for vegetative growth, flowering plants and to get more resin, trichome and cannabinoid production.

Lesson Timeline:
– Lesson Objectives – 0:47
– What Spectrum Is Best? – 1:16
– UV Spectrum Effects On Cannabis – 1:58
– Blue Spectrum Effects On Cannabis – 3:16
– Green Spectrum Effects On Cannabis – 4:29
– Yellow Spectrum Effects On Cannabis – 5:23
– Red Spectrum Effects On Cannabis – 5:33
– Far Red and Infrared Spectrum Effects On Cannabis – 5:55
– Growth Stage Goals – 6:25
– Growth Goal: Vegetative – 6:47
– Growth Goal: Pre-Flower – 8:15
– Growth Goal: Flowering – 9:56
– Growth Goal: Late Flowering – 11:05
– Closing Notes – 13:21
– Lesson Review – 13:55

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MY GROW EQUIPMENT: https://fourbudz.com/
FOR EQUIPMENT LINKS AND WHAT I USE FOR MY GROW:
http://www.indicainstitute.com/equipment_recommendations_all.html

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50 Comments

  1. Cristina Chaino-ahkeahbo on May 29, 2022 at 6:58 am

    You can’t share so how am I supposed to let my friends know to use it



  2. Fabian Aguilar on May 29, 2022 at 6:58 am

    Is a 300w led full spectrum good for 2 plants on there whole life cycle in a 3×3



  3. Rick James jr on May 29, 2022 at 7:00 am

    Very very helpful



  4. Username Here on May 29, 2022 at 7:01 am

    ๐Ÿ™Œ๐Ÿ™



  5. Bobbie Chinn on May 29, 2022 at 7:03 am

    Excellent vid!! Thank u so much! Must sub.



  6. Kickin' Wing Hotboi on May 29, 2022 at 7:03 am

    I know some people are gonna think this is total blasphemy and unheard of… but… common household LED’s work just fine for growing bud if you have a small closet grow with only a few plants. I recommend the 13.5w/100w equivalent 5000k bulbs coupled with the clamp light reflectors for veg and the 3000k bulbs for flower. Ive been growing 4 plants in my closet with nothing but cheap household led bulbs and some Walmart brand "grow bulbs" and i actually have pretty good results so far. No, it isn’t gonna be huge, commercial grow size plants but if you’re just growing for personal use, you definitely don’t have to break the bank trying to grow. I LST’d 2 plants and topped the other 2. The lst plants have 6+ nice beautiful tops while the topped plants have over 9+ tops. The plants were all vegged for around 5 weeks and I just flipped them to flower
    Yes, you’ll need to buy quite a few of them but at only $5 (after tax) per bulb, that’s not near as bad as it COULD be. I have 11 lights total for the 4 plants I have. A mix of 5000k, 3000k and the grow bulbs that (supposedly) are full spectrum, according to the picture and info on the boxes. So far so good though so im happy



  7. lifefordummies on May 29, 2022 at 7:04 am

    best resource out there! ๐Ÿ™‚ but holy crap what are you using as a microphone? may i suggest a blue yeti? ๐Ÿ™‚



  8. Leen back on May 29, 2022 at 7:05 am

    I’m enjoying your videos very knowledgeable ๐Ÿ‘๐Ÿป



  9. Gary Sickler on May 29, 2022 at 7:06 am

    What about MH lights?



  10. Harlowe on May 29, 2022 at 7:07 am

    100 being cheap….whew im in the wrong area



  11. cheiftain on May 29, 2022 at 7:08 am

    I have a T5 and a maxbright 300 LED which for veg only ? Full spec or the blue from T5



  12. pain unforgetable on May 29, 2022 at 7:08 am

    Sounds not good



  13. m747 96 on May 29, 2022 at 7:09 am

    Needs volume



  14. Gary Sickler on May 29, 2022 at 7:09 am

    Love your tutorials . taught me alot about the golden green plant.



  15. Backstabber BWB on May 29, 2022 at 7:09 am

    My light I got on amazon has full spectrum and a veg and bloom knobs that can turn up and down the intensity I got it for like $50 on amazon lol it does really good so idk why u said cheap ones on amazon didnโ€™t work lol



  16. Paris Rose on May 29, 2022 at 7:11 am

    You’ve answered my questions on the use of the veg/bloom switches on an inherited LED light that came with no instructions. You would not believe how many videos I had to watch to find out how to use the 3 modes.
    Thank you so much.



  17. Mad River Reefs on May 29, 2022 at 7:11 am

    HID isnt shielded by the glass we use MH in the aquarium industry for corals for the UV SMFH



  18. Hugo Stiglitz on May 29, 2022 at 7:12 am

    So much information out there, it’s confusing for a first time soon to be grower in NY. You said the cheap lights found on Amazon under $100 don’t have uv rays needed. However a lot of them say they do. What would you suggest?



  19. s Ikeda on May 29, 2022 at 7:13 am

    tip: phizon blue, red and cob with 3000k led floodlight achieves astonishing results



  20. Samsung Grey on May 29, 2022 at 7:15 am

    ร l)!)))



  21. Dee Campbell on May 29, 2022 at 7:15 am

    Can I. Grow my plant the whole time under red light she 12 weeks old and was thinking off switching it to under 400 watt white light ?



  22. DarthSniper MikeM on May 29, 2022 at 7:17 am

    I cannot turn the sound up very much



  23. Jim Miller on May 29, 2022 at 7:18 am

    So what does my led light do when I turn on full spectrum to the cannabis plants?



  24. Karo Romanov on May 29, 2022 at 7:19 am

    Hi
    Good information.
    I’ ve tried to buy the Fourbudz Top through the link below the video , but it gives me an error , it does not allow me to enter the page.
    How can i buy the best performing Fourbudz ( the top ) ?
    Please send the information to my email
    karoromanov11@gmail.com
    —Fourbudz Top.
    — Price.
    —How do i order from Spain.
    — Time of shipment to Spain.
    Thanks



  25. Joey Soprano on May 29, 2022 at 7:20 am

    great video



  26. typhoonfire8 on May 29, 2022 at 7:21 am

    wouldn’t bud site growth be like irrelevant to what you’re after though, a high potency plant, cause bud site growth would just mean more of the leafy flowery bits right? or am i misunderstanding something. for farmers and retailers i can see how bud site growth would be desired because then the can sell more product, but in terms of a personal grow wouldn’t you want to be using blue light so that you get maximum trichome density. in fact wouldn’t personal growers, people who care about quality more than quantity and don’t have much room to spare, be using more blue light in general as it promotes a shorter plant structure as well



  27. Samantha Barry on May 29, 2022 at 7:22 am

    Hi I’m flushing my plant and I’m not sure what light to use for the last two weeks before harvest.do I use rd light or white light



  28. Ashleigh M on May 29, 2022 at 7:24 am

    Love what you’ve done with the website, looks amazing. Question for you…I purchased the nutes you suggested on your page "General Hydroponics" it came with three, FloraMicro, FloraGro, and FloraBloom, It suggests to use the FloraMicro(5-0-1) combined with the FloraGro (2-1-6) does this sound like overkill? Is this suggested for my Lil budz, should I combine or just use separately? Thanks in advance!



  29. Altonake on May 29, 2022 at 7:24 am

    Hello,I have some questions why do you but UV and IR spectrum constantly on so high power. I thought UV Spektrum is to increase Potency in the last weeks of flower.
    And when its used earlier only to prepare/boost the plant for the coming UV and in very less intensity.
    And for what I know is FAR RED used for shorten the flowering time by only a time for 15 minutes – 2 hours at the and of the day.
    I think A little bit UV and IR over the hole grow will make the plants stronger and healthier.
    Maybe I am wrong and to give so much uv and ir is good please let me know what you was thinking about this. peace :)))



  30. Josue Rod on May 29, 2022 at 7:24 am

    Great info!!!!! But I get it your light is the best light lmao



  31. Patrick Roepke on May 29, 2022 at 7:28 am

    310nm UVB- Use during halfway point of flower cycle, so 8am-8pm I’ll use it at 60cm from 3pm-5pm last 3 weeks of flower. Trust me freaking great. Use for 1 hour when placed at 30cm. I forgot to mention that the bulb is 75% UVB and 25% UVA



  32. Patrick Roepke on May 29, 2022 at 7:31 am

    Awesome video. Bravo ๐Ÿ‘



  33. James Butterson on May 29, 2022 at 7:32 am

    For the CFL and T5 the key word is if ( NOT ) used correctly!". โœŒ๐Ÿ’š๐Ÿ‘Š๐Ÿ’จ



  34. Professor 420 on May 29, 2022 at 7:32 am

    it would be nice that when you state something is "proven" that you cite your source(s).



  35. Kiwi_Leisa on May 29, 2022 at 7:36 am

    This by far, is the best video ever to explain the spectrums/effects etc, thank you so much, I really appreciate this so much & finally feel like I get it ๐Ÿ™Œ๐Ÿ˜Š๐Ÿ‘



  36. Bud Henry on May 29, 2022 at 7:37 am

    So 3000 of 3500k for the lm301 diodes?



  37. Corey P on May 29, 2022 at 7:42 am

    The volume of your videos tends to be pretty low



  38. Eric Warner on May 29, 2022 at 7:43 am

    Just found ur vids gonna have to go and see what else I can find. This will be my first grow was wondering where i would find the leds with control



  39. Yuuto Nosuri on May 29, 2022 at 7:46 am

    So what so a mix of veg and bloom
    For first 3 weeks blue then a mix of blue and red for say 4th week to 6th week for growth then change to 12 – 12 for say 4 weeks give or take going on strain ? , and then fully change to bloom on leds (with veg bloom)ops if you want you can turn the blue back on in bloom last week or 2 ? .



  40. Laserdozer on May 29, 2022 at 7:46 am

    very nice content AND presentation, basic and clear narrative. really good.



  41. GamingOfTheLegend on May 29, 2022 at 7:46 am

    When we talk late are we talking the last 2 weeks?



  42. Ser66 on May 29, 2022 at 7:48 am

    For me the full spectrum must be a good quality leds with optical lens. I use Cf Grow 600 {4x50w}optical lens, side room 1.5 x 1.5 and for flower cxb3590 200w- 2x100w same side room, is perfect. Thanks.



  43. Leonardo 007 on May 29, 2022 at 7:48 am

    UVA is better than UVB because donโ€™t affect the DNA of the plant



  44. Albino Viper on May 29, 2022 at 7:51 am

    Four budz commercial



  45. Isaac Harris on May 29, 2022 at 7:53 am

    I got 30$ Amazon grow lights with full spectrum and its working like a charm so far with just regular yellow/white light, it has 2 other spectrums for later in veg and flowering. Would recommend getting like 3-4 of them and you’ll be chilling, I also got alluminum foil on the walls and floor so it’s far most reflective and intense in the room. You can grow quality cannabis for like 200$ for everything you need if you look in the right places. Don’t be discouraged if you’re broke.



  46. Mr_Manny_D on May 29, 2022 at 7:54 am

    Great info.โœŒ๐ŸผโœŒ๐ŸผโœŒ๐Ÿผ



  47. Mr X on May 29, 2022 at 7:54 am

    Can i grow small plants in the start of the vegetative state while my bigger plants are in their mid bloom stage by shading the vegetative plant to a 18-24 while keeping a 12-12 mid bloom? im trying to be efficient with time and space instead of starting from scratch.



  48. High -Tai- Chi on May 29, 2022 at 7:54 am

    It’s funny they say you won’t find any good price lights with the correct spectrum. Found mine on Amazon for 50 bucks and I yield ounces Everytime. Just learn to read then specifications and know what your being sold.



  49. Frank Woodworth on May 29, 2022 at 7:55 am

    Your knocking the CFL a little hard. I grow lots of weed with them. Good dense buds. Just keep the lights about 3 inches from the tops. Use low stress training and keep the tops at the same level. And keep the lights down close to the tops. 3 INCHES. I’m getting about 6 oz off each plant. Good solid buds not larf. They work fine for the whole life cycle. Use a combination of 3000k 5000k and 6500k. Bulbs. I Use the 13watts and the 23watts bulbs. Keep them down low to the plants 3 INCHES. They will not get hot enough to burn them unless they touch the plan. I wouldn’t waist peopls time. I’m telling you. You can grow great weed with them twisty CFL bulbs. Good heavy compact buds. Just keep the lights down close to the tops. use the low stress training to keep the tops even. And keep the lights down low. 3 INCHES. It works great. If you try it I bet you will change your tune on the CFL. Ps I’m talking about the twisty bulbs NOT the T5 or the T8. You have to use spliter to get enough of them to cover your plant. Just a couple WONT DO. Cover the plant with them and you will love it



  50. elliott debell on May 29, 2022 at 7:57 am

    Yes yes yes youโ€™re selling LEDโ€™s I get it. Completely missed HPS and CMH combo complete spectrum and almost perfect spectrum