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).

Day 64 my baby is going really well by now, she s been running fast until now and I think that’s enough with fertiliser. From today o start my flush, I will give today my last dose of regulator and from next irrigation just on controlled water until the end of maturation, I want this baby to eat everything . day 65 started flushing. ph controlled water at 6.0 i think 20 more days at max before m Day 68 First check with micro today. The baby looks already milky and amber on the top buds but the rest of the plant is still transparent. I’ll wait at least until this weekend for a re check maybe I’ll cut her in two rounds. As I be been watching a lot with micro I noticed so many dust and other stuff on the buds so I think I’ll wash her in water. Today watered ph 6. Let’s see! 🌱🔥🌱🔥🌱🔥🔥

The temperatures, humidity, height, and watering volume(if measured) in grow conditions are all averaged for the week. The pH is soil pH. Any watering done by me is well water which is 7.6 pH and 50° F. Any listed nutrients are ml/gallon of soil spread evenly across the top of the soil. Day 1 we had a high temperature of 93°F with sunny clear skies. I watered 4-5 gallons each pot twice, from the well. Day 2 we had a high temperature of 95°F with clear sunny skies. It was super hot today. I watered each pot 4-5 gallons twice. Day 3 we had a high temperature of 95°F. It felt like 97°F. We had super clear sunny skies. The girls are loving the sunshine and slightly less humidity. I watered twice @4-5 gallons per pot. Day 4 we had a high temperature of 90°F with super clear sunny skies. The temperature was more comfortable at 90° today because we had less humidity. I watered 4-5 gallons per pot from the well. Day 5 we had a high temperature of 81°F with partly cloudy skies. The girls are still thirsty. I watered 4-5 gallons per pot once. These girls roots have tapped through these pots and into the soil. Unless it's just super hot watering once is enough. Day 6 we had a high temperature of 83° with clear sunny skies. I watered 4-5 gallons once per pot. Day 7 we had a high temperature of 79°F with clear sunny skies. I watered once 4-5 gallons of well water per pot. The girls are thirsty but the heat isn't sucking the water out of the pots. The girls are in full vegative phase 2 and continue to gain height. This week was a great success. The girls really stretched and tipped out at 89". That's over 7 feet not counting the pot. The weather was very pleasant. We had a few hot days but mostly cool fall type weather. The defoliation and treatment of powdery mildew with Growers Ally fungicide ended that problem. These plants do have a high level of resistance but not immunity. I'll continue to treat once a week. Most growers don't talk about their fungal pathogens or treatment of them. Outdoors, if your plants aren't immune (many fastbuds I've grown from seed have been) then this is an issue you'll deal with if you have cool humid nights. There are many treatments and preventatives and some are scarey. My grows are all organic and I carefully chose Growers Ally fungicide as I smoke these plants and don't want anything scarey in(systemic) or on them. Thanks for stopping by and checking out my grow.

Some of you may have wondered: Why do I use CO2 at average 950 ppfd μmol/m2/s (moral flow)? The answer is quite simple. Because of lack of space in some regions of my cultivation area, I simply cannot keep the ideal distance to my Sanlight high-performance lamp, due to some height growth of various strains. And so some of the main colas have ppfd values of 1250 μmol/m2/s and even more... So this is how I manage to achieve and compensate for such high radiation levels even with a CO 2 balance. And I have to say, my strategy to avoid various light stress symptoms works just fabulously. In combination with CO 2 implementation, my babies are simply unbeatably insensitive to light. Thats it! Beginning of 3rd week flowering: Again feeding my babies by 36 hours fermented potions of Bio Tabs Kompost Tea PK-Booster (15 g pro Liter) and added: 5ml Orgatrex/Liter 1 Spoon of Bactrex 1 Spoon of Mycotrex 1 Spoon of Mycco-Vital 1 Spoon of Dynomyco A little tip for those who are interested in small modifications that have a big difference or influence - on the result - effect - beauty - health - taste! Before adding microorganisms or beneficial bacteria or Mycorrizae and Trichodermas, please use oxygen-saturated water. On the one hand, unwanted chlorine gases evaporate and the small world of the microbiome becomes even faster and more rewarding in compost tea to sprout. Last but not least for this week, I would like to introduce my reasons, why I prefer growing biologically and sustainably. First of all, it’s something which suits very well in these times/days we are living now. Sustainability is a big need and task for our planet. 🌎 Nature means life. Our home, the air we breathe and everything that surrounds us. Not just today. Hopefully tomorrow as well. Maybe I'm starting to protect our environment on a small scale, but maybe I can also make a big difference at all. If you change the way you look at things, the things you look at change... I thought about what’s the difference, between Mineral Feeding and Super Soil Feeding. It’s very easy. Biologically Growing is a similar process than the natural soil activities out there in the lap of nature’s. So plants has to work and interact with the microorganisms and microbiomic communities in the soil. So the plants will never get lazy like the lazy ones of mineral feeding growers. If you grow biologically, you will feed the soil first and the microorganisms will support every parameter next to your plant conditions. And that will generate an unbelievable spectrum of Terpenes and Trichomes you will never forget. It’s the same comparison, when you daily visit McDonalds and you eat only fast food. How does your body and mind react on this shit for money?!?! May I invite you to think about it… See you next week dear Growmies! Have a nice Weekend and take care… Peace out! Addendum for Day 53: At the moment we unfortunately have another winter onset here in Germany. This means that I am forced to take additional heating measures due to structural facts in order to be able to keep the temperatures constant. After all, just tonight the thermometer climbs again to -1 degree Celsius. In addition, my exhaust air system runs out of my bedroom terrace and I therefore grow winter and summer with the patio door open. Well, sometimes I experience real weather-related challenges. But all in all, no problem... "Where there's a will, there's a way." Addendum to pouring out the fermented PK tea: I always administer half a liter of lukewarm aerated water with 3.5 ml of cannazyme per liter to each plant. This means that the "root machine" is not supplied with supplies unprepared and the nutrient solution can thus also be better distributed in the soil. Since I also work with cloth shoes, I spray them evenly moistened everywhere with water that is also warm before pouring them out from the outside. This has the advantage that the moisture stays where it should: in the pot! ... I did the math today ;-) We are still in week 7 until this Friday. And week 8 starts on Friday! OMG... still so much time yeahh! Today my Fast Buds Sour Jealousy and Sweet Seeds Big Devil and Dark Devil Automatics arrived. I'm looking forward to it. This time Fast Buds next Time Sweet Seeds. Love them too. Very beautiful genetics. Today a review video of the beginning of week 3. At the time of the pictures, I had minor signs of nitrogen excess. (Light peaks first at the crown of the roof and then slightly continuing to the middle section.) I then painstakingly racked my brains as to why this could be. I found that very slight dry spots had formed and therefore the root found small accumulations of nitrogen that caused its problems. But then, when I carefully homogeneously checked the moisture content in the substrate, the problem evaporated again. However, they had not shown any loss of growth rate during this time. Nevertheless, they developed as expected. They Strawnanas had no problem with that. In the end, I always have a hard time killing them. But I guess that's the way things go. We live and die. We come and go. But it's not there yet. ;-) Tomorrow is day 56. Tomorrow’s updating day! Can't wait to see their progress. Have a good time and see you tomorrow… 🏽🕊️ 🏽 ☮️🕊️

Okok

out of 5 seedlings 1 was yellow from day 1. all of them were germinated the same and have been treated the same as the other 4. any feedback would be great

SPONSORED DIARY===SPONSORED DIARY===SPONSORED DIARY Plants are doing well this week. Have some continued signs of thrips damaging some of the leaves. Will need to teat them and kill em all off if possible. The thrips are also outdoors on some of my plants, I feel they came from the bagged promix I got or they overwintered and travelled indoors. Light was a bit to strong at 100% when i grew taller, turned it down to 80%ish now till it starts to blooms. currently at 45cm hang height, Tent is having some issues with cooling down, even running the extractor is not doing much, so I prop the door open at the top and it helps vent it out. Maybe because of the vents the air is not circulating though and just travelling up one side of the tent, IDK. its a waste to run it past setting 5 on a 2x2 so the door will stay propped indefinitely. Still no smells unless I'm rubbing them, no signs of flower just yet, temped to top or LST but I think I'm going to let them go as is and get a good gauge on how they grow and yield. SPONSORED DIARY===SPONSORED DIARY===SPONSORED DIARY Big shout out to @SpiderFarmer for supplying the 2x2x5 Grow tent and The SF1000 100w LED light. I will be uploading all relevant photos of the products in the next week when they arrive, maybe do a little unboxing video. Who knows. A 2nd big shout out to Dr.Seeds for supplying the 3x5pac of seeds I will only be featuring two of the three strains in two separate diaries. You the users will get to decide what ones I grow. I have setup a Grow Question on each diary to vote for your strain of choice for that diary. https://growdiaries.com/grow-questions/47600-drseeds-1-vote-what-i-grow "Diary #1" https://growdiaries.com/grow-questions/47600-drseeds-1-vote-what-i-grow "Diary #2" Cast your vote for each diary. Thought I would add in the relevant links if you wanted to read up on any of the products that will be officially featured in this grow. https://www.spider-farmer.com/ https://growdiaries.com/grow-lights/spider-farmer (+) https://www.spider-farmer.com/products/sf-1000-led-grow-light/ https://growdiaries.com/grow-tents/spider-farmer (+) https://www.spider-farmer.com/products/sf-2-x2-indoor-grow-tent-hydroponic-home-plant-reflective-aluminum-oxford-cloth/ https://drseeds.net/ https://growdiaries.com/seedbank/dr-seeds (+) https://drseeds.net/product/granddaddy-purple-autoflowering-cannabis-seeds/ (+) https://growdiaries.com/seedbank/dr-seeds/granddaddy-purple [Photoperiod not Autoflowering] https://drseeds.net/product/60-day-wonder-autoflowering-cannabis-seeds/ (+) https://growdiaries.com/seedbank/dr-seeds/60-day-wonder-autoflowering

Gorilla Glue #1 - Harvest Comment - I Am Very Satisfied With What I Got, I got 3 ounce 7 grams - I Uses Advance Nutrients PH perfect In veg then I switch to the iguana juice organic juice for the flowering stage. I notice a much more slower growth when I switch to organic nutrients.00

-riego de 2 ml x litro de heavy bud se rego con 6L -se supone que eran de 55 dias pero tendremos que dar mas semanas a estos ejemplares. - aplicaremos un riego de agua para ir bajando

Venga familia que ya viene la cosecha de esta Panty Punch de Seedstockers, que ganas que tenia ya de darles machetazo. No veas que pinta que tienen estas plantas. Las flores aparte se ven bien resinosas, y son bien prietas, aparte son súper aromáticas huelen mucho. (COLOQUEN UN BUEN FILTRO PARA EL OLOR). a sido una genética con la que disfruté mucho cultivarla, la genética es perfecta para SOG y es bien vigorosa, es muy fácil cultivarla y muy resistente merece la pena si eres cultivador principiante. Hasta aquí es todo, espero que lo disfrutéis, buenos humos 💨💨.

Hello welcome back to the garden today is day 63 with the Californian snow sorry iv missed a few weeks but here you go she is a beast she has towered over all the others she’s at about 120-125 cm in hight and she’s starting to swell it is amazing how big she is in 63 days she’s frosty af and I can’t wait to try her buds so until harvest be safe and happy growing 👌🏻

Birthday doughnut by equilibrium genetics is a excellent strain.very easy to grow and a good yeilder. I really only vegged these plants for like 4-5 weeks and pulled 7 ounces off 3 plants. On a 200 watt light mf2000

Tras una nueva semanas las pequeñas avanzan mas o menos bien! Creo q me pase en el ultimo riego y que alguna tiene alguna carencia pero estamos trabajando en ello. Sobre las Burger Puch solo decir que una empezó a declararse por alguna razon y vi que era macho por lo cual se la di a un amigo a ver que pasa al final!! Espero que en dos semanas mas ponerlas a florar ! También decir que nos han regalado una Red Hot de sweet seeds ya que una amiga no tenia mucho espacio !!! A ver que tal la experiencia !!!

Just a little outdoor test run project with minimal maintenance. Smells divine

Week 4 of flower and the plants a doing well after week 3's leaf strip.

Pretty lil pink thing , going on a flush now and coming out next week

Going to let the plant dry hanging for a few days and then trim, I've never tried a dry or dry-ish trim, so it'll be a good experience. Will update in two weeks with dry weight and initial smoke test. Hang drying took longer then wet trim and drying in my rack, but the smell and taste of this strain is mind blowing! 11/10!

Die Milben haben wieder gute Arbeit geleistet. Alles schaut wieder gut aus! Werde sie jetzt so lang der Stretch noch geht mit Draht und Netz auf einer Höhe halten und ausbreiten. Anfang nächste Woche mache ich ne Defoliation und evt bissl lollipopping. Und lichtintensität geht nächste Woche auch auf 100%

Last week, first of flowering, was outstanding, I could water the girls regulary and the work paid off they stretched a lot and are looking super healthy. The girl right below the upper fan is suffering a bit with the shadows and is notoriously shorter than her sisters, I will need to rethink the air circulation for the next grow. Another concern of mine is their height, hoping they dont stretch anymore as the lights are already at maximum possible height inside tent and there is only 20cm gap between it and the plants.