Learn To Identify Magnesium Deficiency In Cannabis

Learn To Identify Magnesium Deficiency In Cannabis

Learn to identify Mg deficiency in your Marijuana crops. This mobile deficiency results in yellow colored leaves and might first be confused for Nitrogen deficiency. But the rust-colored spots give it away for what it truly is. The other deficiency that often looks like Mg issues is Calcium – which is why SO many of the magnesium additive products are actually Cal/Mg combined products!

Find nutrients such as Cal/Mg booster at my Grow Gear Shop: https://www.amazon.com/shop/influencer-945853a8

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Episode on Nitrogen deficiency: https://odysee.com/@lexblazer:6/episode-74-learn-to-spot-nitrogen-deficiency:3

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50 Comments

  1. Yardy West on June 10, 2022 at 5:39 am

    Hey guys ive got two question . ive seen the brown spots on the top leaves and already added more calmag to the plant of my friend, about how long does it take until they disapear? and does it make sense preparing ph balanced water for a few days. Because ive checked the same water a few days after and it went up again by 1-1,5 . im wondering why or is the ph meter broke ? great videos by the way πŸ™‚



  2. radical gaming clips and highlights on June 10, 2022 at 5:40 am

    Slight calcium deficiency as well. Some minor distortion on the fan leaves I’ve noticed.



  3. dalan wanbdiska on June 10, 2022 at 5:43 am

    Ok .thats why my plants are going like this. Dying yellow leaves after brown spots. Moving all alom the plant upwards. Ill fix it right away.



  4. pabuffa Buffa on June 10, 2022 at 5:45 am

    Nice work!



  5. Daniel Anacrelico on June 10, 2022 at 5:47 am

    This was awesome. Literally had every single symptom you said and my plants just hit 1 month old. Added some epsom salt and fertilizer to the soil so hoping it does the trick. Thanks so much



  6. Bullet Man on June 10, 2022 at 5:47 am

    Yet again I applaud your wisdom.



  7. Lex Blazer on June 10, 2022 at 5:48 am

    Wondering about other deficiencies? Potassium? Nitrogen? Phosphorous? I got good episodes on ALL so be sure to subscribe and check them out!



  8. Matthew Pumphrey on June 10, 2022 at 5:48 am

    I believe I have magnesium deficiency due to the purple streaks on my stock and stems. She is like a lime /yellow green in most of the plant. I wish I could show it, she’s definitely sick. This is my pineapple chunk from Barny’s farm. Vegging her out longer to take clones but I keep getting stunted. Someone help? I am doing a flush today



  9. Tracy Bacani on June 10, 2022 at 5:50 am

    I have this problem but I’ve been only feeding my plants just water πŸ’§ why would they look like this brown spots ?



  10. Jacob Chang on June 10, 2022 at 5:50 am

    This is what I need. A real life example. Thanks!



  11. Jason Ivy on June 10, 2022 at 5:51 am

    Lex what would cause, only half the leaf to deform spontaneously through out the plant …. looks mobile



  12. Thomas Hollingshead on June 10, 2022 at 5:52 am

    I have a clone I bought that has yellowing between the vain and 3 spots formed on a top leaf. Since the yellowing started it hasn’t gotten anymore yellow.i do an indoor grow .



  13. KEvronista on June 10, 2022 at 5:52 am

    i knew about the deficiency, but i didn’t know the roll ph played. thanks, lex.
    KEvron



  14. double ooh 7 on June 10, 2022 at 5:53 am

    Also the purpling stems stopped purpling



  15. Billy Summers on June 10, 2022 at 5:54 am

    My water ph is ranging from 6-6.5 according to my gh ph drop test soils 7ish according to soil ph reader been seeing mag deficiency for 4 days been giving mag suplement and it keeps getting worse should i bump up the mag in the water or what im at a loss



  16. Al Bundy on June 10, 2022 at 5:54 am

    I just started getting the brown spots no yellowing yet, is that the early sign?



  17. Luka Vega on June 10, 2022 at 5:55 am

    I appreciate you!!! My 4th attempt and I thought this was a disease and pulled em…wheeew. Live and learn.



  18. Ghost In The Darkness on June 10, 2022 at 5:56 am

    Hey lex huge fan my friend , having a huge problem man . My plant is wrinkling , it’s a weird leave to begin with and I’m not sure what to do I watched all ur vids thought it was mag def. so I added some bloom , maybe a lockout ?



  19. BUEFED.T JUSTICE on June 10, 2022 at 6:00 am

    Hey bro great info as always peace luv an respect ✌ 🀘✊ πŸ‘Š πŸ’― πŸ™ πŸ‡¬πŸ‡§πŸ‡¬πŸ‡§πŸŒ±πŸŒ±πŸŒ±πŸ’šβ˜―οΈβ˜―οΈβ˜―οΈ



  20. Lance Owens on June 10, 2022 at 6:02 am

    Thanks lex totally appreciate you doing the work to help us out πŸ‘πŸ‘πŸ’šπŸ’šπŸ’š



  21. Bob James on June 10, 2022 at 6:02 am

    Great vid Lex , so I add cal/mag ? To my nutrients ?



  22. Paulie on June 10, 2022 at 6:04 am

    Years later and I still come back to these videos.invaluable.Lex, thanks again, again, again..ad infinitum ✌🏻🌱🀘🏻



  23. Rjf 187 on June 10, 2022 at 6:04 am

    Are those special rocks or chunk nutrient or something? I figured maybe support the base without LST? Protect the medium from heat? Retain moisture. Im curious to the benefits of this on a closet grow. Thank you for the videos, ive learned so much and youve helped alot in my garden. Thank you.



  24. Grow in Peace@420 on June 10, 2022 at 6:05 am

    I’ve have this same problem with the same rust spots and yellowing but it was on the top and middle outer leafs I saw it first ,and leaves dried up the same, , could it still be magnesium def. ? I’ve given them bio buzz alga mic and bio bloom and top max some Epsom salts too , oh I’m 5days into flower only saw this prob the day after ,should I go back on veg ? I’m growing in bio buzz light mix ,toped with pro mix and insect frass with ecotrive biosys . Is there a site I could send a photo of the leaves ? I’m just looking for some tips ,thanks and I love your channel



  25. Luis Ramirez on June 10, 2022 at 6:06 am

    Is there a homemade remedy



  26. Johnny Hash on June 10, 2022 at 6:08 am

    This video helped me out big time, so I did a video and gave you and you channel a shoutout and link to your channel. Thanks again, Johnny Hash



  27. frederic fronsacq on June 10, 2022 at 6:08 am

    Yo men how we can have personal contact? I gott problem whit my own grow in early stage butt don’t know what it is can we have contact somewhere!? πŸ˜ŽπŸ‘



  28. Laila Van der Perk on June 10, 2022 at 6:10 am

    Do you maybe have Facebook? I have some questions, because I have this problem now with my first plant



  29. Jon.S on June 10, 2022 at 6:12 am

    Very helful info lex right on man



  30. Chevy Nova on June 10, 2022 at 6:14 am

    Mines been doing this for a week now just found a good enough vid to explain lol. The plants can come out of it tho? Mine are autoflower hopefully it didn’t stunt it much :/



  31. Tim Sanders on June 10, 2022 at 6:17 am

    Thanks Lex



  32. Shade tree Prospector on June 10, 2022 at 6:18 am

    Can I use Botanicare Cal Mag in flower



  33. Gerth Brooks on June 10, 2022 at 6:22 am

    How do you raise the ph of the soil



  34. Ricardo Hernandez on June 10, 2022 at 6:22 am

    General organics calmag would work?



  35. Drew Delcasale on June 10, 2022 at 6:22 am

    Do you mean ph of the soil or water



  36. Dont Trust Verify on June 10, 2022 at 6:25 am

    Great video !!!! You saved my babies. Subscribed



  37. Rob DuBois on June 10, 2022 at 6:26 am

    how do you "bump up soil PH"? Do you just water using PH balanced water or..?



  38. Red Dead Daily on June 10, 2022 at 6:26 am

    Great video 🍿🍿🍿🍿🍿🍿



  39. Gilbert Sanchez on June 10, 2022 at 6:29 am

    Man thank u so much for this video. U answered my question I have been asking many youtubers for the past week and not one has came close to hitting on point with clear to understand guidance. I ask a question and they come up with the most irrelevant questions in return such as light distance, and room temps after I had sent pics of my garden problem that never even had nothing to do with what they questioned me after telling them about the symptoms and pics on top. Just watching this I understood within minutes what was wrong in my garden



  40. amandus152 on June 10, 2022 at 6:30 am

    it looks like blight to me



  41. I Am Not Sadhguru Jaggi Vasudev on June 10, 2022 at 6:32 am

    I think the purple stems also indicate magnesium deficiency.



  42. kush killer on June 10, 2022 at 6:32 am

    Would this stop a plant from flowing?



  43. Jesse James on June 10, 2022 at 6:33 am

    Heads up the link for the Mag deficiency video doesn’t work for me. I found it on YouTube.



  44. #Noname vids on June 10, 2022 at 6:34 am

    Dam mine is on week 3 flower and its at the top of plant I aded some magnesium and calcium I’m I fuckedπŸ™ the leaves aren’t dry yet still flexible will it fix its self please any answer would be appreciated πŸ˜ƒ



  45. Michael Filipek on June 10, 2022 at 6:34 am

    Lex omg I’ve been through 50 videos on this and yours is the best by a milllion light years thanks again man saved me



  46. SilliVilliN on June 10, 2022 at 6:35 am

    I’ve corrected the deficiency and many leaves came right off. Some are crispy at the tips but still hanging on. Any suggestions?



  47. Chad Dunn on June 10, 2022 at 6:37 am

    Could I please send you a picture of my plant and you diagnose it? Because this is my first grow and I’ve seen all your videos and I’m pretty sure my plant has every deficiency I’ve see. Can someone please help



  48. Gilbert Sanchez on June 10, 2022 at 6:38 am

    So does the the purpleing in stems come after this symptom? I ask because this is how it started in mine.



  49. Its Sh1FtY on June 10, 2022 at 6:38 am

    You should have pulled those lover leaves off, even adding magnesium that is still spreadable with how far gone certain leaves are.



  50. Brad Dwc on June 10, 2022 at 6:38 am

    And I thought it was the purple coloring of its branches and the leaves in later deficiency stage , avocados n bananas are high in magnesium πŸ˜‰