Well, I don't have a clue on what's up with this girl. There is some history of this showing up from time to time, and I cannot get it nailed down! This particular girl is Blueberry...have grown several with NO problems. I've experienced it before to the point of ALL the leaves falling off and really struggling to finish (ya think? But finish she did!). I will list my room environment first: Grow Medium: Soil (Potters Gold) Nutes: GH FloraNova Grow (veg) and GH FloraNova Bloom Humbolt Farms G-10 (formerly Gravity 10) Mr. Mucha-Stash cal/mag supplement Botanicare KIND Base (4,0,0 + 5%Ca) Bonide Mite-X for mite control 2x 1,000w HPS lights Air circulating fans (2) Inline fans (2) Pro 100 charcoal filter exhausting odor and excess heat Room temp: 74-78 deg lights on and 64-65 deg lights off Now, some of the history. I have had this issue pop up every now and again and it does NOT appear to be strain specific. She starts out very healthy and over time, always a few weeks into flowering, the green begins to leave. It fades and fades to a yellowish green then all yellow. The entire plant seems effected. All leaves seem to yellow at the same rate, meaning it's not just coming to the end of it's life cycle. Does anyone have any idea what is going on? I'd like to fix it if possible! I know I can't reverse the damage already done, but I need to stop it from happening at all! Hopefully I have given enough info for a diagnosis, but I'm ready to tear my hair out!!! Thanks in advance for all help! The leaves are two that I just removed.....
First of all are you sure it's not just naturally yellowing off because it's at the end of the life cycle. Looks like you got multiple things going on if not. Magnesium deficiency and Nitrogen or maybe too much fert
Where on the plant does the yellowing start? older larger leaves on the bottom of the plant I am assuming; If you're seeing problems starting at the bottom leaves then it can only mean N-P-K or Mg deficiency or a high EC so just identifying where the problem starts will help you tremendously. Problems starting at new younger growth tends to be Iron, Zinc, Calcium, over or under watering. Problems occuring on the middle of the plant or buds first is usually Molybdemum or Sulfur. Sulfur looks very much like a Nitrogen deficiency so identifying where the problem started always greatly helps and will eliminate many possibilities right off the bat.
The leaves begin to yellow slightly at the bottom, and within a day or two, the entire plant has turned....I did forget to mention that I use R/O for watering and the pH is low from the R/O process...I add a few drops of pH up and the PPM are less than 20 after adjusting the pH. PPM before adding pH up is less than 10. Nothing ever starts on the new growth...just starts at the bottom up and spreads like wildfire! None of the other plants do this, just one, every so often. And not strain specific. The soil I use is a lighter mix than FFOF...many are switching to it in my area and won't go back to FF. Hope the additional info helps! You guys are the best! My regime is the same for all of my Indicas. What am I missing? And what should I use to correct it? Thank you SO much! Not sure what EC is...guess I had better head over to the 'slang' department!
Its flowering, fuck those fucking leaves. You are done growing leaf, the plant dont want them anymore. You dont want to pump them with ferts to turn them green, make the buds taste like shit. What you see is perfectly normal.
If you take pictures with your HPS light on your leaves are also going to look a lot more yellow than they really are. I agree with snoop though.
If it's from seed then you might have 2 or 3 or more phenotypes that develop, could be that one is more sensitive to nutes than the others. Some breeders even describe the different phenos that develop before you buy. If it's from clone then you really shouldn't be having these problems if they weren't present in other grows, but I think it's pheno-specific from your description of it only happening to some plants and not others from the same strain. I burned a blueberry before, it reacted exactly the same way as yours, fucked up the entire plant in a day or two.
It is a clone (approx 3rd generation) and the others did great! She's been in the flowering room since 12/12/2014 so she's far from finished IMO....
Sorry, I saw that. I see you are also using another high Ca supplement which may be locking out your Mg or K. The K-Ca-Mg ratio should be 4-2-1. Seems like yours is more like 2-2-1 or 4-2-0.5, maybe 4-4-0.5. I would add 1 tsp of epsom salt to your next feeding depending on how long you have until harvest, or just let your buds use the nutrients in the leaves to grow naturally through cannabalization.
yes 1 tsp per gallon should be good! I would mix it in warm water so it dissolves and then add the solution to your fertilizer formula
Do you know of a better nute system? I really like the G-10 as a bud tightener...I seem to fight this issue every once in a while. Not sure if I should switch nutes completely, add others, or just hang tight with what I have and add supplements as I need them or the symptoms appear. I think I'd rather not see any symptoms! lol!
I am a professional greenhouse manager. Fertilizing my cannabis plant is much different than a Pansy or Geranium. At home as a hobby I use GH Micro, GH Bloom, and Epsom Salt. That's it. In the greenhouse we use water soluble fertilizers that have different effects on the pH of the media. We start with a 20-10-20 which has ammonical Nitrogen and drops the pH so we then switch to a 15-5-15 which supplies CAL-Mag, has low phosphorus to prevent stretch and uses Nitrate nitrogens to raise the pH. So you see professionally we let our pH dictate the type of fertilizer we use at home as a hobby I just feed it 6 ml micro and 9 ml of bloom per gallon, these amounts can be modified to your plants age as long as you keep the 2-3 micro-bloom ratio. I used a combo of Lucas and H3ads formula. (Lucas is 1:2 micro:bloom ratio, h3ads is 2:3)
just gonna shoot an idea, prolly i'm too high, if when it gets to flowering around 1 2 weeks left you trim the bud leaves on the very top and the ones on the bottom of the plant, would this help the plant grow some bigger buds possibly?
Here's the watering schedule from our Greenhouse Fall Chrysanthemum Crop I though you might find interesting 9/17 20-10-20 300 ppm pH 5.98 EC 3.60 9/25 20-10-20 300 ppm 9/30 20-10-20 300 ppm pH 6.1 EC 2.95 10/3 20-10-20 300 ppm 10/6 20-10-20 300 ppm 10/10 20-10-20 300 ppm pH 5.7 EC 4.95 10/16 H2O pH 5.8 EC 3.02 10/19 H2O 10/21 H2O 10/22 15-5-15 200 ppm pH 5.88 EC 1.97 10/25 15-5-15 200 ppm 10/26 H2O 10/27 H2O 10/28 15-5-15 200 ppm 10/29 15-5-15 200 ppm 10/30 15-5-15 200 ppm 10/31 15-5-15 200 ppm pH 6.82 EC 2.04 11/1 15-5-15 200 ppm pH 6.78 EC 1.88 11/2 15-5-15 200 ppm 11/3 15-5-15 200 ppm 11/4 15-5-15 200 ppm pH 6.91 EC 1.43 11/5 H2O 11/6 H2O 11/7 H2O 11/8 H2O 11/9 H2O 11/10 H2O 11/11 H2O pH 7.41 EC .72
So, you're saying that I should just use the three nutes? GH Micro, GH Bloom and epsom salts for my fert routine? I need to change something, but want to make sure that this is what you are telling me. I have no problem switching up my fert routine, but would really like to keep the G-10!
Thank you! It's been a day, so less nutes sounds really good to me right now! lol! I'll give it a whirl!