Green light is radiation with wavelengths between 520 and 560 nm and it affects photosynthesis, plant height, and flowering. Plants reflect green light and this is why they appear green to our eyes. As a result, some growers think that plants don’t use green wavelengths, but they actually do! In fact, only around 5 – 10% of green light is reflected from leaves and the rest (90 – 95 %) is absorbed or transmitted to lower leaves [1]. Green wavelengths get used in photosynthesis. Chlorophyll pigments absorb small amounts of green wavelengths. Light that doesn’t get absorbed is transmitted to leaves that are shaded out from direct light. This means that leaves at the bottom of the canopy get more green light than leaves at the top. A high proportion of green wavelengths compared to other colors tells lower leaves that they are being shaded out, so they are able to react accordingly. Lower leaves may react by opening or closing their stomata or growing longer stems that help the leaves reach brighter light [1, 2, 3]. When it comes to growing cannabis, many cultivators are interested in the quality of light used for the flowering stage. In many plants, flowering is regulated by two main photoreceptors: cryptochrome and phytochrome. Both photoreceptors primarily respond to blue light but can also respond to green, although to a lesser extent. Green can accelerate the start of flowering in several species (although cannabis has yet to be tested) [1, 4, 5]. However, once flowering has begun, it’s important to provide plants with a “full spectrum” light that has high amounts of blue and red light, and moderate amounts of green, in order for photosynthesis to be optimized. Green light mediates seed germination in some species. Seeds use green wavelengths to decide whether the environment is good for germination. Shade environments are enriched in green relative to red and blue light, so a plant can tell if it is shady or sunny. A seed that senses a shaded environment may stay dormant to avoid poor growing conditions [1]. Some examples of plant species where researchers have documented this response are: ryegrass (a grass that grows in tufts) and Chondrilla (a plant related to dandelion) [1, 6]. Although green wavelengths generally tell plants NOT to germinate, there are some exceptions! Surprisingly, green wavelengths can stimulate seed germination in some species like Aeschynomene, Tephrosia, Solidago, Cyrtopodium, and Atriplex [1, 6, 7]. Of course, light is not the only factor affecting seed germination – it’s a combination of many factors, such as soil moisture, soil type, temperature, photoperiod, and light quality. When combined with red and blue light, green can really enhance plant growth [1, 8]. However, too much green light (more than 50% of the total light) can actually reduce plant growth [8]. Based on the most current research, the ideal ratio of green, red, and blue light is thought to be around 1:2:1 for green:blue:red [9]. When choosing a horticultural light, choose one that has high amounts of blue and red light and moderate amounts of green and other colors of light. Not many studies can be found about the effect of green light on cannabis growth or metabolism. However, if one reads carefully, there are clues and data available even from the very early papers. Mahlberg and Hemphill (1983) used colored filters in their study to alter the sunlight spectrum and study green light among others. They concluded that the green filter, which makes the environment green by cutting other wavelengths out, reduced the THC concentration significantly compared to the daylight control treatment. It has been demonstrated that green color can reduce secondary metabolite activity with other species as well. For example, the addition of green to a light spectrum decreases anthocyanin concentration in lettuce (Zhang and Folta 2012). If green light only reverses the biosynthesis of some secondary metabolites, then why put green light into a growth spectrum at all? Well, there are a couple of good reasons. One is that green penetrates leaf layers effectively. Conversely red and blue light is almost completely absorbed by the first leaf layer. Green travels through the first, second, and even third layers effectively (Figure 2). Lower leaf layers can utilize green light in photosynthesis and therefore produce yields as well. Even though a green light-specific photoreceptor has not yet been found, it is known that green light has effects independent from the cryptochrome but then again, also cryptochrome-dependent ones, just like blue light. It is known that green light in low light intensity conditions can enhance far red stimulating secondary metabolite production in microgreens and then again, counteracts the production of these compounds in high-intensity light conditions (Kim et al. 2004). In many cases, green light promoted physiological changes in plants that are opposite to the actions of blue light. In the study by Kim et al. blue light-induced anthocyanin accumulation was inhibited by green light. In another study it has been found that blue light promotes stomatal opening whereas green light promotes stomatal closure (Frechilla et al. 2000). Blue light inhibits the early stem elongation in the seedling stage whereas green light promotes it (Folta 2004). Also, blue light results in flowering induction, and green light inhibits it (Banerjee et al., 2007). As you can see, green light works very closely with blue light, and therefore not only the amount of these two wavelengths separately is important but also the ratio (Blue: Green) between these two in the designed spectrum. Furthermore, green light has been found to affect the elongation of petioles and upward leaf reorientation with the model plant Arabidopsis thaliana both of which are a sign of shade avoidance symptoms (Zhang et al. 2011) and also gene expression in the same plant (Dhingra et al. 2006). As mentioned before, green light produces shade avoidance symptoms which are quite intuitive if you consider the natural conditions where the plants grow. Not all the green light is reflected from the highest canopy leaves in nature but a lot of it (50-90%) has been estimated to penetrate the upper leaves at the plant level ((Terashima et al., 2009; Nishio, 2000). For the plant growing in the understory of the forest green light is a signal for the plant of being in the shade of a bigger plant. Then again, the plants growing under unobstructed sunlight can take advantage of the green photons that can more easily penetrate the upper leaves than the red and blue photons. From the photosynthetic pigments in higher plants, chlorophyll is crucial for plant growth. Dissolved chlorophyll and absorb maximally in the red (λ600–700 nm) and blue (λ400–500 nm) regions of the spectrum and not as easily in the green (λ500–600 nm) regions. Up to 80% of all green light is thought to be transmitted through the chloroplast (Terashima et al., 2009) and this allows more green photons to pass deeper into the leaf mesophyll layer than red and blue photons. When the green light is scattered in the vertical leaf profile its journey is lengthened and therefore photons have a higher chance of hitting and being absorbed by chloroplasts on their passage through the leaf to the lower leaves of the plant. Photons of PPFD (photosynthetic photon flux density) are captured by chlorophyll causing an excitation of an electron to enter a higher energy state in which the energy is immediately passed on to the neighboring chlorophyll molecule by resonance transfer or released to the electron transport chain (PSII and PSI). Despite the low extinction coefficient of chlorophyll in the green 500–600 nm region it needs to be noted that the absorbance can be significant if the pigment (chlorophyll) concentration in the leaf is high enough. The research available clearly shows that plants use green wavelengths to promote higher biomass and yield (photosynthetic activity), and that it is a crucial signal for long-term developmental and short-term dynamic acclimation (Blue:Green ratio) to the environment. It should not be dismissed but studied more because it brings more opportunities to control plant gene expression and physiology in plant production. REFERENCES Banerjee R., Schleicher E., Meier S. Viana R. M., Pokorny R., Ahmad M., Bittl R., Batschauer. 2007. The signaling state of Arabidopsis cryptochrome 2 contains flavin semiquinone. The Journal of Biological Chemistry 282, 14916–14922. Dhingra, A., Bies, D. H., Lehner, K. R., and Folta, K. M. 2006. Green light adjusts the plastic transcriptome during early photomorphogenic development. Plant Physiol. 142, 1256-1266. Folta, K. M. 2004. Green light stimulates early stem elongation, antagonizing light-mediated growth inhibition. Plant Physiol. 135, 1407-1416. Frechilla, S., Talbott, L. D., Bogomolmi, R. A., and Zeiger, E. 2000. Reversal of blue light -stimulated stomatal opening by green light. Plant Cell Physiol. 41, 171-176. Kim, H.H., Goins, G. D., Wheeler, R. M., and Sager, J. C. 2004.Green-light supplementation for enhanced lettuce growth under red- and blue-light emitting diodes. HortScience 39, 1617-1622. Nishio, J.N. 2000. Why are higher plants green? Evolution of the higher plant photosynthetic pigment complement. Plant Cell and Environment 23, 539–548. Terashima I., Fujita T., Inoue T., Chow W.S., Oguchi R. 2009. Green light drives leaf photosynthesis more efficiently than red light in strong white light: revisiting the enigmatic question of why leaves are green. Plant & Cell Physiology 50, 684–697. Zhang, T., Maruhnich, S. A., and Folta, K. M. 2011. Green light induces shade avoidance symptoms. Plant Physiol. 157, 1528-156. Wang, Y. & Folta, K. M. Contributions of green light to plant growth and development. Am. J. Bot. 100, 70–78 (2013). Zhang, T. & Folta, K. M. Green light signaling and adaptive response. Plant Signal. Behav. 7, 75–78 (2012). Johkan, M. et al. Blue light-emitting diode light irradiation of seedlings improves seedling quality and growth after transplanting in red leaf lettuce. HortScience 45, 1809–1814 (2010). Kasajima, S., et al. Effect of Light Quality on Developmental Rate of Wheat under Continuous Light at a Constant Temperature. Plant Prod. Sci. 10, 286–291 (2007). Banerjee, R. et al. The signaling state of Arabidopsis cryptochrome 2 contains flavin semiquinone. J. Biol. Chem. 282, 14916–14922 (2007). Goggin, D. E. & Steadman, K. J. Blue and green are frequently seen: responses of seeds to short- and mid-wavelength light. Seed Sci. Res. 22, 27–35 (2012). Mandák, B. & Pyšek, P. The effects of light quality, nitrate concentration and presence of bracteoles on germination of different fruit types in the heterocarpous Atriplex sagittata. J. Ecol. 89, 149–158 (2001). Darko, E. et al. Photosynthesis under artificial light: the shift in primary and secondary metabolism. Philos. Trans. R. Soc. B Biol. Sci. 369 (2014). Lu, N. et al. Effects of Supplemental Lighting with Light-Emitting Diodes (LEDs) on Tomato Yield and Quality of Single-Truss Tomato Plants Grown at High Planting Density. Environ. Control Biol. 50, 63–74 (2012).

11/17: I fed today but didn't have time for much of a photo session. Gave them One, Signal, Sweet & Sticky, Cha Ching, and started them on LiquidSoil. 11/19: Foxtailing a little bit, but still putting on size and frost. Still the best smelling strain in the garden!

,, the Flooring going well as you can see buds growing just perfect, I am using nutrients from Hesi. No overdose, no PH correction. Recommend

Mar 31 I think things are going very well, one plant has rusty spots, pretty sure its calcium deficiency, will be upping across the board. Got the runoff ppm to a good spot, will be going back to 800ppm feeds by week 8, 750ppm this week. I want more stable genetics next time, I am way to new to be dealing with basically 3 different strains, that's what it feels like, and I have very little time as it is. Thinking of upping PPFD some more, i think the droop of the one plant was just adapting to watering till runoff, I want to see some fattening AND RIGHT NOW.

ok...serious growth.. My room is not high :) enough to harbour the ladies.. mmmm. let me think for a minute I'll dominate the living sh@t out of them... ; SUPERCROPPING

SuperSativaSeedClub PurplePunch OG Auto These girls are doing good after the transplant. I did loose one. Both the others seem to be bouncing back. Still some crispy leafs but overall it looks like more healthy are growing. All in all Happy Growing.

Week 1 Day 1 - 8/12/2023 1st Water change Day! Such a special time it is when you remove the little bit of Nutes that you gave them as an appetizer and you give them their first real meal. Added 39 Gallons of Water to my system SILICA= .5mil/Gal = 19.5 = 20mil Root Drip = 1mil/Gal = 39mil Cal Mag= .25mil/Gal = 9.75 = 10mil FLoraMicro= 3.0mil/Gal = 114mil FloraGro = 2.0mil/Gal = 78mil FloraBloom = 2.0mil/Gal =78mil ORCA= .5mil/Gal = 19.5 = 20mil Week 1 Day 2 - 8/13/2023 Everything is looking good the roots are making thier way to the water and the new grow is looking nice and green. Week 1 Day 3- 8/14/2023 Everything is right on track, they are looking beautiful and in the praying postition all leaves happily lifting towards the light. Week 1 Day 4- 8/15/2023 Looking beautiful today and looked like she could use her first haircut.. gave her a TOP off. Roots are laying in the water everything is looking right on track.. Week 1 Day 5- 8/16/2023 walked in and the humidity was under 60.... ohh noooooo.. So I added 2 humidifiers to the tent and attached them to my InkBird controller which is set to 62. She had roots nicely in the water.. this grow is on!!! Week 1 Day 6- 8/17/2023 Humidity was a little low this morning, so I refilled the humidifiers. Other than that, the temp looks great, the PH looks great, the PPM looks good the plant is in the praying position and all damage from the little drowning seems to have been fixed. Happy Happy. Week 1 Day 7- 8/18/2023 Yay.. week 1 in the books, roots in the water growth has started first hair cut given and both side nodes are growing. Everything is looking good and on track.. A lot better than week one of the last grow when I had them drowning week 1. Really excited on how this grow is going to come out.

// Harvesting and drying Since this was an outdoor grow, I did my first bud wash. I tried the method with citrus juice and backing soda. Was okay, I know I got all the street dust and fine dust away from her. But bud washing simply does not help enough when it comes to pests. The mites stick to the trichomes and you can't really to anything about it. Good thing is that most pests are on the leafs and not really on the buds themselves. Drying was smooth. 7 days approx. which is good if you think about the heat wave that hit us right during the drying time. 30°C in the tent is just bad for the drying process so I can't complain with the quality I got out of it.

Divine indica is growing really well. She is coming close to the end of bulking. Looks like she is trying to fox tail from the heat oright being too intense. I have been backing off on the light intensity for heat reasons. She had a solution change a few days ago. Everything is wrapping up really well. She will likely start a flush week in about a week roughly. Just depends how fast she keeps grow. She has a earthy, woody kinda aroma. Looks very frosty and delicious. Thank you Spider Farmer, and Divine Seeds. 🤜🏻🤛🏻🌱❄️🌱 Thank you grow diaries community for the 👇likes👇, follows, comments, and subscriptions on my YouTube channel👇. ❄️🌱🍻 Happy Growing 🌱🌱🌱 https://youtube.com/channel/UCAhN7yRzWLpcaRHhMIQ7X4g

Sorry for not uploading i had some ups and downs in my life, and with the college is really hard to work all those things together. But now i am back and going to hustle really hard.

They have duplicate the size and started to smell a bit, really good vibes about, great color on the leaves and nice looking Any suggestions will be great!!

Day 65, 14th of November 2020: Amazing week.... RQS Wedding Gelato does not strech a lot and pistils coming out nicely.... Original Sensible Seeds has amazing gentics they are so strechy except Black Ghost OG, rest of them crazyyyyyyy..... I also broke two of the sides from Gelato Original Sensible Seeds but fixed with tape and now all good lol 🤣🤣🤣 Pre flowers out and I really hope they stop growing lol. I also noticed that the Original Sensible Seeds strains have nice purple colours of the fan leave's stem. All the same fertilization happens every 2nd day with the mix above and ratio. One more thing: I set the lamp 15 minutes shorter to switch off earlier so they receive 11:45 of darkness. I would like to imitate the nature when longer nights come with time till the 4th week (when they will receive 13 hours darkness a day 15 minutes minus 4 times = 1hour) so every week 15 min longer darkness for 4 weeks and then back to 12/12 to have bigger buds from the 4th week....

I'm happy :) I couldn't do it as it should have been, my ph meters broke and ruined everything :( well, but I'm very, very satisfied with the result :) a big thank you to my teacher :)@AsNoriu you are super :) without you it wouldn't have been possible :) I learned a lot of useful information from you :) the house is full of lemon aroma :)

Happy Growing Everyone!!! It's been a few days since I gave the Ladies thier 1st Feed of #HumboldtCountysOwn Nutrients and some Loved it a little Better than others but that's Alright! We'll definitely Grow back to everything here soon! I can't Wait for May 1st to Flip to Flower and to Celebrate my Wonderful and Beautiful Wife's Birthday! 10th w/ Veg Update #Pre-Sexed🚺 #SuperCropped Good Day and Happy Growing Everyone! These Ladies are Growing into thier 11th Week of Veg and Looking Totally Tight and Phenomenally *Femed* from the Right! #Pre-Sexed 4/9/21 #Opium/#PabloEscobar *Fems* breed by Team #DivineSeeds #DivineSeedsSquad #DivineSeedsBreedingCompany and #SuperCropping continued! I'm Very Excited and Extremely Gracious!!! Heck Yeah Growmies and Growmets!!! Check Out these Confirmed Females with thier Wild Pistol Hairs popping and I'm still Training and Widening them Out with #SuperCropping Everything looks Expanded and Growing Great! After #SuperCropping the plant will Grow Bushier, Produce More Buds, and possibly even Produce More THC! This is how the plant naturally responses to danger and protects itself! Growers take advantage of this technique to get Bigger Yields and More Potent Buds than would be produced otherwise! Getting Trained out into thier 9th Week of Veg and Looking Mighty Fine!!! Thier getting Humongous and Hearty in thier 10 gallon Grow Bag from Broski #www.as420.ca These Cannabis plants are Camping out in the Closet for a week or so! Lol This is my 2nd run using the Osree.Light QB1000w and Everything is Mesmerizing!!! My #Opium and #PabloEscobar *Fems* from #DivineSeeds Regs: SalamiLegF3's×2 and FireAlienRomulan look$ Outstandingly Awesome and Growing Up Phenomenally Fine into thier 11th week of Veg in our 2- 10 gallon The Grow Bags from Broski #www.as420.ca and also 2- 5 gallons as Well! Our others are Super and Breed by #thehumancannabiniod #AlienBloodGenetix #TNBNaturals #Foop Yo!!! Thanks Again for All the Love and Support my fellow Growmies and Growmets!!! These Magnificent and Magical Ladies were Growing in our 48×24×60 ViparSpectra Official Club 🌿 ®️ Grow Tent and under our #Osree QB1000w and #GrowStarStore Kokokala QB1000w and our Lavender×3, Sunflowers×5 and The 6 Brand New and Fresh Starts are Wonderful with a Huge Hint of Fantastical Fire is my #SalamiLegF3×2 by Broski #thehumancannabiniod #DankFlowGenetics #EastCoastSeedBank #FireAlienRomulan by Broski #AlienBloodGenetix my #PabloEscobar and #Opium by Team #DivineSeeds #DivineSeedsBreedingCompany We Grow with #Growatt 600w with #FoopOrangicBioSciences and #TNBNaturals The Enhancer Co2 Despersal canister and ph'd them w/ Declorinated watering w/ TNB ph Up and Down! Totally Top Quality Topz all Around! Thanks Again #GallowGlas420 #HarleyGrower #thehumancannabiniod #AlienBloodGenetix #TNBNATURALS #FoopOrangicBioSciences #www.as420.ca #divineseeds #divineseedssquad #divineseedsbreedingcompany #BioFlux Family's and Teams!!! Your Genetics are Merry Magnificent, Mega Marvelous and Mighty Medical! Love um!!! I really Can't stress enough how Thankful and Grateful I am of All of you and what you've Shared with Us! Means the World!!! It's definitely a Pleasure being able to Grow with these Phenomenal Grow Lights! Please Enjoy! BudBrothers4-Life! Cheers Famz!!! Much Props and Much Topz!💯🔥 #Osree #GrowStarStore #Growatt #TNBNaturals #TNBTeam #FoopOrangics #GrowYourOwn #Bliss HumboldtCounty'sOwn: Email: [email protected] Phone: (707) 725-4119 Toll free: (866) 872-9434 Humboldt Bottling Po Box 429 · Fortuna, CA 95540 HumboldtCounty'sOwn Website Link: https://humboldtcountysown.com/ HumboldtCounty'sOwn Instagram Link: https://instagram.com/humboldtcountysown?igshid=1qj809qkkwych https://instagram.com/divine.seeds?igshid=1r90iwe9xiwz8 https://instagram.com/thehumancannabinoid?igshid=17k159pumklkq https://www.instagram.com/alienblood_genetix_official/ https://instagram.com/as420.ca?igshid=1f116alw054wp The Grow Bags: https://www.as420

While the others have finished, for Cheese this will be the last week and he's already in flush, I'll give Bubblegum another week. What can I say? I'm so proud of these two!

Bending leafs waiting for her to flower, a little bunt tips from feeding last night

Had to do the first res change, brought the ppm to 620+/- . This week was recorded on morning number 11. Roots are starting to come out of the net pots in all 3 plants. Looking forward to next week with a new res change to 800ppm. Update. 4/10 Res change to 850 and ph of 6. Day 18. Will do res change around the 28th to a heavy feed for late veg stage of around 950 to 1000. That will bring me into flower for the 2 blue dreams.

she grows healthy ... she is in her last weeks outdoor ... the days are cloudy most of the day ... with the substrate mills he has .. he feeds every 10 days with red guano and earthworm humus

All looking decent, been training them probly not as much as I should’ve done, Give them a defol And a lollipop to what I think is ok!!! going to flip them into flower today after getting rid of any light leak etc, Gonna be watching for them hermied closely over the next 3 weeks, hopefully I don’t miss any😬😬

D29: Pistils are clearly showing now. She's looking really good and vigorous. I did notice a (very) small number of brown pistils. Might be from being a little bit careless while doing LST and toching it with the iron wire, could that be? Or could there something else going on? Speaking of LST, from now on I'm going to let the main cola grow upward again. I kept her really low to give the lower branches enough space, and I think that's the case now. I also tucked away most of the fan leaves that were blocking the light of certain tops. I think I'm going to plant her out in full ground by the end of the week. Temperatures are supposed to be 20+°C then. Any thoughts about that? D31: I decided to let it stay in its current pot, in order not to stress the roots right before flowering. She still keeps on growing every day, still at a surprisingly high pace. Also, I'm tucking away the fan leaves and other leave that are blocking the sunlight from the tops. Tomorrow it's watering time again, right before the start of week 6. Since I'm only watering her after the soil is almost dried out, I'm probably not watering her for another 5-6 days. My question now is what fertilisers I should be adding. There's already 60g of granular 6-3-3 fertiliser in it (added over the past two weeks), so I won't be adding any more of that anymore. I have phosphorous grains (6-16-0), and potassium grains (2-0-20) and I'm wondering if I should already add those potassium grains or just stick with phosphorous grains this time and add potassium grains next watering when it's (probably by then) just started flowering. Any advice?