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WARNING: this will be a long read 😉
I think week 9 tells you many things about the trends of your grow. Especially with sativas, because you notice, for example, if there’s a salt buildup going on. This is my case. When I think about my last scrog with Silver Haze, I can’t forget the big overfeeding I had toward the end of flowering. My fault, because I used full strenght nutes!
This time I tried to improve, and forced myself to give 1/2 strenght nutes (except once in the entire cycle), alternating one time water+nutes and one time just water.
LET’S DO SOME BRAINSTORMING!
Everything Is good now, but I feel I need to discuss my thoughts about those deficiencies I had last week. I think I had 3 main problems altogether:
1. When I transplanted the princess in her 20L pot, I run out of Bio Terra Plus, so I topped the pot with coco coir, and added that mixture of bat guano, algae and neem flour on the surface of it. In the middle of flowering, when I had that big overwatering, I noticed that I couldn’t see when the soil below the coco was dry or wet, so I decided to remove that coco layer (together with bat guano and other supplements). At that point I felt like I had to recover that bat guano+algae+neem flour layer, and added 50% of what I put on day 1 of flowering (since I was exactly in the middle). Well, very bad move, because this bat guano dosage has been really too much for this landrace Sativa.
2. Two weeks ago I felt like some silica could help her reacting better to very dry conditions since, after the overwatering, I started waiting for some droopy leaves before watering again. But I gave the wrong dosage: 1ml/L instead of 0.1ml/L. That’s 10 times more than the right dosage!!! Silica, other than making plants stronger, improves and increases the absorption of nutrients from mediums, so just think about the possible damage!
3. Five CO2 bags, together with higher temperature (29-31C) and higher RH (50-60%), that made her metabolism accelerate and suck more nutrients, faster.
So, summing everything up:
- Too much P (phosphorus) given from bat guano (and some from normal nutrients)....
PLUS....
- Too much Si (silica), which increased nutrients absorption....
PLUS....
- Increased metabolism from CO2, higher temperature and higher RH....
GIVES............ P TOXICITY!!!! Nice one Totem 😂!!!!! You can see this by looking at those curled down leaves, plus some burned tips on the photos. (Some weeks ago I noticed some yellow tips, and even wrote something about it here. Well, that was the first sign of overfeeding. I spotted it, but didn’t do anything to fix it 😆!
This P toxicity, together with high amounts of silica (which increased PH level too), made PH go up, and eventually caused some other nutrients to lockout. Between day 106 and 107, before I reacted with a corrected PH 6.5 watering, all the upper leaves started showing some yellow/light brown spots on them (just on the side facing at the lights). I looked at every page I found on Google, but I haven’t been able to find the exact reason that caused these spots. To me, it seems like a Ca (calcium) deficiency, maybe because of some lockout, but definitely not a real deficiency. Just a lockout. Calcium deficiency usually shows these spots on both sides of leaves, not only one. The other possible cause could be wind burn, which causes these yellow/brown spots, even if it’s definitely not the case here. And to be clear, I got red veins on some of those curled leaves, which I think have been there since the time of overwatering.
As you can see, I did some mistakes altogether, which are now hard to recognize, separate and analyze singularly. I’ll tell you this: I’ll grow Dr. Grinspoon again, next time with more awareness and an even lighter feeding schedule (with no silica, less bat guano, and maybe no CO2, at least in flower). 🌲🌲🌲🌲🌲
And to sum up what happened day by day, here are the facts:
Day 106: Noticed yellow/brown spots on upper leaves.
Day 107: More spots on leaves! Watered with 6L of tap water with corrected PH (6.5). Runoff: PH 6.8, 835 ppm (remember this value, and compare it with the one before the big flush of day 110).
Day 109: Took some photos! I LOVE THIS STRANGE PHENO. Finally bigger and fatter colas! It finally seems like the one you see on stock photos, but it’s slightly different. Foxtails are there, and are taking their shape very slowly. Love the little gems you can see on flower shoots. Wow! Last photo shows you the yellow/light brown spots on the leaves.
Day 110: No new yellow spots, but leaves below are still very curled down, as you can see. Decided to flush with 26L of flush of PH 6.5 tap water (~23C, 150ppm). But before, I removed ALL the bat guano, algae and neem flour there was on the surface.
After the first 2L, runoff PPMs were 2000 (????), with PH 7.1. After the 26th liter, runoff PPMs were 580, and PH 6.8.
Day 111: Upper leaves (the ones with spots) are praying to the sky. They look very happy. Leaves below are still very curled down and a bit curled outwards too, but they’re not showing any other deficiency. It’s strange because, even if at the moment I’m not having overwatering problems, I still can’t classify these symptoms.
PS: Sorry if I take so long to reply to comments, but I don’t have much free time in this period! :-(
Dude! Lookn great and gotta be coming to the end in short order. How many weeks u think u have left? Read the comment and have to say the following - #1. Think we’ve all seen nute def. and toxicity on GD/in our grows at some point and while there are signs on her you obviously caught it and rectified it early (in all instances). You’re wayyy too hard on yourself 😉. I sincerely doubt this plant has suffered too much as a result👍. Sign of a diligent grower homie😀. #2. I agree with your diagnosis - that spotting looks like cal. Def. to me too. Good news is u gotta be close to the finish now and I don’t think it will have any overt impact on harvest. In short - you rocked this scrog regardless and I’d love to see the follow up grow now that you have some experience with the strain. Been a great read bro, we are not worthy!!!! 👍👊😎.
@Silky_smooth, Hey there!!!! Don’t worry for the ones who died! I’m sure you’ll do better things next time, and I’ll be following again, and again, and again, until you’ll reach the harvest! Come one little Silky!!!! 😎💪
mate , you are amazing for your perseverance with this one. . you deserve a brilliant result and have worked to create one. Brilliant job and so rooting for you
@TOTEM, My pleasure mate. You have taken a hit for the team for sure and satisfied a lot of possible growers of grinspoon. Knowing its difficult reputation and lengthy flowering time has cost you immensely no doubt. Thanks for showing its potential and the sacrifice needed to grow this masterpiece. Barneys Seeds need to see this grow and use your agreed pics to show it off properly. When your sat back with a fridge full of chocolate ( hash brownie ones maybe?) and a bowl full of her fruit , you will be grinning from ear to ear , with slits for eyes and solving the worlds problems easily !!!. Top notch mate
@Tonino, Thank you brother, comments like this are always VERY motivating, and I never take them for granted! You know, I was thinking about how GD community stimulates growers to continuously improve over time, and it works very well! And what worked pretty well since the very start was pro growers like you motivating beginners growers like me to learn and explore new and fascinating ways to grow these plants. So thank you x2 👊
@Ga4rd2en0er, Haha! Yes I'm still doing some tests vaping at different temps, and trying to define the high in a proper way by comparing more trips and personal sensations! I think I'll take some more days, but not much more!! Fingers crossed! 😃
I applaude you for your patience. Its such a prehistoric looking version of cannabis and i am interested in hearing what you have to say about the smell, taste and, of course, the buzz!
cant believe shes down after all that bro thought she was gonna go on and on I would have not lasted as long as you have... at least other 12 wk strains will seem like a breeze to you now iv been checking magnetous diaries and noticed he not been about will he be updating some harvest pics of his ? looking forward to seeing some dry pics and a harvest report from you you killed it 👊👊👍
@biggreens420, Thank you very much bro!! Your support has been really precious like always!! I'd call it essential!!!! Like the first one you sent me when I joined GD! High five!!! 🙌👊
I admire your grow so much I'm practicing with some unknown seeds while waiting for my good stuff to come so I do it right. I appreciate the detail you took!
I'm not an expert, and many many people around know much more than me, even you @TOTEM. But i cant tell you my experience this summer. I had a awesome Lemon Zkittle, that begin to do the same as yours in the leafs, i asked to a friend and he tell me to irrigate adding "Growing Base nutrient", i can tell you that it didn't fixed it, but it helped much, as the growing base nutrient slow down the yellowing much. Enough to end the harvest.
Apart of this, i will tell you again Super awesome job in all ways!!! (Growing, Imaginering and post-processing).
Green regards!!!!
@Cogollo_eu, Thanks for sharing your experience bro. Natural senescence will turn leaves to yellow because plants will suck energies from them for the final phase of flowering. Sometimes that natural food is not enough, so you have to add a little more by your own, if you’re still not in the final flush phase. That’s what happened to me!
Thank you for the kind words bro!! So much appreciated. My old Silver Haze scrog helped me a lot with the imaginering process of this king of scrog. The fact that you’re growing a sativa that will stretch a lot when you flip her to 12/12, and how you get slowly used to their net/scrog filling rate. It’s all about trial and error.
Happy growing bro!!!!
Must be driving you crazy you do everything right and she punishes you for it😭 hang in there mate fingers crossed she starts putting in as much effort as you have🤞🤞🤞
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