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).

Semana del 10 al 16 de Noviembre. Solución nutritiva 11 ml Balance 22 ml Cal Mag 2.5 gr veg 1 2.5 gr veg 2 15 ml hydroguard.

Day 126. Girls are thursty !!!! But it's a trend of all of all summer, I don't want to invest any time except documentation of process. They miss feed a bit too, but soil is dry and I will postpone last feed till I am back from holidays.... No updates next week, let's see colas then !!!! Happy Growing !!!

23.04.2024 Continue into week 8 Replaced all filters in the system and cleaned them. Mixed a new batch with the following components: 20+25ml AN Connoisseur Bloom A+B Total volume: 34 liters Electrical Conductivity (EC): 1.0 Target EC for this week: 0.8-1.0. Adjustments will be based on plant observations. Performed one long misting session (3 minutes). Environmental Conditions: Outside temperatures going up, today is raining but this week start higher temps and humidity Wedding Cheesecake: One girl is gonna finish in this week, Two others probably in next. Frutti terps in this, Two pheno in total from 3 girls' Tropicana Cookies: Phenomenal strain; One girl is going to finish this week and second couple days after . Two pheno in Tropicana's girls Purple Lemonade: Tall plants, massive producer, all three girls will be in 9 week provably. Here so far all three girl share same characteristics and bud structure Beautiful and high odor in the room! Lighting Parameters: PAR Map: Maximum PPFD is 950, minimum PPFD is 650. VPD: Ranges from -1.1 to -1.2. Daytime Temperature (DT): 23-24°C. Nighttime Temperature (NT): 19-20°C. Leaf Temperature: 21-22°C. Light Distance: 45-55 cm from the plants. CO2 Levels: 700+ ppm. HLG Scorpion Diablo: Set at 70%, positioned at a 45-55 cm distance. Girls drink less water, so for this week and till the end of flowering new misting timing's Daytime: ON for 70 seconds, followed by 30 minutes OFF. Nighttime: OFF for 70 seconds, followed by 35 minutes OFF. Nutrient Tank (NT): pH: Maintained between 5.80 and 6.00. Stable PH, small drifting up and downs EC: 1.05. Temperature: 19-21°C 25.04.2024 TrolMaster toys arrived! Purchase new DST2E, DSP2E, DSH2E, AMP3+probes. Another DSH2E and DSP2E ordered to complete this grow box! Replaced all filters in the system and cleaned them. Mixed a new batch with the following components: 25+30ml AN Connoisseur Bloom A+B. Total volume: 17 liters Electrical Conductivity (EC): 1.05 Tomorrow Tropicana Cookies harvest! Put bucket with this girl on separate line for flushing Wedding Cheesecake also finish soon, probably in next week, Wednesday think... Purple Lemonade still need full week or more...Exceptional odors Temps and humidity outside start to raises, hope i will finish this run before Tropical heat Lighting Parameters: PAR Map: Maximum PPFD is 950, minimum PPFD is 650. VPD: Ranges from -1.0 to -1.1. Daytime Temperature (DT): 23-24°C. Nighttime Temperature (NT): 19-20°C. Leaf Temperature: 21-22°C. Light Distance: 45-55 cm from the plants. CO2 Levels: 700+ ppm. HLG Scorpion Diablo: Set at 70%, positioned at a 45-55 cm distance. Daytime: ON for 70 seconds, followed by 30 minutes OFF. Nighttime: OFF for 70 seconds, followed by 35 minutes OFF. Nutrient Tank (NT): pH: Maintained between 5.80 and 5.95. Stable PH... EC: 1.05. Temperature: 19-21°C 26.04.2024 Connect TrolMaster components into the Tent-X system. Program DSP2E, Temperature DST2E, Humidity DSH2E, as well as the AMP3 sensor with PH and EC probes, are all in place. After calibrating the probes, AMP3 module works perfectly! It has a quick response in measurements, is accurate, and I am very happy about the possibility of online monitoring of liquid values. After day off use i can tell that all readings are very consistent, compared with Milwaukee, totally without all over the place measurements. Perfectly steady and on spot receding! The Program device runs flawlessly all day, and I hope it has solved all the problems I had with DH48-S timers. The humidity control operates without errors throughout the day, and it’s nice to see in the app when the module is active. Raise light as much as i can..50-55cm from canopy. Set off misting time from 30min to 35min @ day time , and from 35min to 45min @ night time Flush Tropicana Cookies' for one more day, tomorrow harvest, prepared tent for drying with humidifier , ventilation and temperature and humidity controllers PAR Map: Maximum PPFD is 850, minimum PPFD is 500. VPD: Ranges from 1.0 to 1.1. Daytime Temperature (DT): 23-24°C. Nighttime Temperature (NT): 19-20°C. Leaf Temperature: 21-22°C. Light Distance: 45-55 cm from the plants. CO2 Levels: 700+ ppm. HLG Scorpion Diablo: Set at 65%, positioned at a 50-55 cm distance. Daytime: ON for 70 seconds, followed by 35 minutes OFF. Nighttime: OFF for 70 seconds, followed by 45 minutes OFF. Nutrient Tank (NT): pH: Maintained between 5.80 and 5.95. Stable PH... EC: 1.05. Temperature: 19-21°C 28.04.2024 First harvest in this run! Tropicana Cookies No1 is a winner.) First Tropicana Cookies is harvested on 89 day from seed. Total 55 days off flowering. Fast flowering indeed as fast in vegetative stage. Cut this girl in branches and hang upside-down in smaller tent for drying Set RH @ 55% , temperatures not able to control so they will be something around 20-21 in drying tent Second Tropicana will be chopped within a couple off days. Checking trichomes with microscopes can tell that one Purple Lemonade is also going to finish in next days Somme lady's will take full 9 weeks or so.. Lowering light intensity, EC in tank start to raise slowly so i will start to adjust according to condition. Currently 0.85EC is perfect strength i think PAR Map: Maximum PPFD is 850, minimum PPFD is 550. VPD: Ranges from - 0.9-1.0 Daytime Temperature (DT): 23-24°C. Nighttime Temperature (NT): 19-20°C. Leaf Temperature: 21-22°C. Light Distance: 45-55 cm from the plants. CO2 Levels: 700+ ppm. HLG Scorpion Diablo: Set at 65%, positioned at a 45-55 cm distance. Daytime: ON for 60 seconds, followed by 30 minutes OFF. Nighttime: OFF for 60 seconds, followed by 35 minutes OFF. Nutrient Tank (NT): pH: Maintained between 5.80 and 5.95. Stable PH... EC: 0.85. Temperature: 19-21°C Week 8 off Flowering in Summary 80 litter off RO water, 120ml+150ml AN connoisseur A+B 45kW electricity in total for light, Pumps and AC Infinity Fans. 42kW for Light + 2kW Dehumidification + AC Infinity ventilation Week start @ 1.1EC, nutrient strength., week finish with 0,87EC Tropicana Cookies is first harvested on day 89 from sprouting , week 8 off flowering Purple Lemonade is on second place with harvest on day 91, last day off 8 week off flowering PH was stabile and move from 5.70 min to 5,9 max. Light distance for this week - 50-55cm from tallest top , PPFD levels around 900 in center, trough whole week. Lowest reading 500 @ corner Temperature are from 20c at start off day to 24.5c max at some points. Night temps around 19.5-20c. Outside humidity is generally low This week i have install TrolMaster AMP3 sensor and humidity, temp and program devices Day RH is moved from 45% to 55% max, at night times drop to 45-48% Lighting Parameters: PAR Map: Maximum PPFD is 900, minimum PPFD is 650. VPD: Ranges from -1.0-1.1. Daytime Temperature (DT): 24.5°C. Nighttime Temperature (NT): 20°C. Leaf Temperature: 22°C. Light Distance: 45-55 cm from the plants. CO2 Levels: 700+ ppm. HLG Scorpion Diablo: Set at 65%, positioned at a 45-55 cm distance. Daytime: ON for 70 seconds, followed by 25 minutes OFF. Nighttime: OFF for 70 seconds, followed by 35 minutes OFF. Nutrient Tank (NT): pH: Maintained between 5.8 and 6.1 EC: 0.87-1,1. Temperature: 20-21°C

Letting them finish out. Just don’t miss a watering

Moved to tent and topped with some low stress training as well nothing crazy so far just waiting for the bottom nods to stretch out for more training. Feeding is just Ro water ph'd between 6.5 to 7.0. Will feed nutrients if I see a deficiency so maybe in 2 weeks.

| 📅 Week 14 Harvest | | 🌱 3 Plants | | 🎪 4x4 Tent | | ⚖️ Final Weight: 11.75 Ounces | _______________________________________________________________________________________ I am very please with the results of this grow and look forward to doing this strain again sometimes in the future! There are Some major things I would do differently a second time around, but nothing too critical. Please feel free to leave behind any suggestions or things you would like to see done in a future diary of mine! Anything from strains to lights and setup, just feel free to ask! This strain was a beauty to grow and I am very pleased with the results. I am doing a Blackberry by Fastbuds in my next diary, but after that I'm open so feel free to suggest a strain. I am looking for more colorful strains like this one 😎 _______________________________________________________________________________________ If you enjoyed this Diary feel free to follow me here on Grow Diaries as well as Instagram and Youtube to see the rest of my content 😘 INSTAGRAM: https://www.instagram.com/hightv.ig YOUTUBE: https://www.youtube.com/channel/UChV8yzZviLCHpGAktvr6r0w0 NEXT GROW W/ TIME-LAPSE: https://growdiaries.com/diaries/18963-blackberry-auto-dwc-fastbuds

Drei Eiswasser Spülungen und etwas kühlere Nachttemperaturen haben zwar etwas an der FarbeRichtung bläulich geändert, allerdings blieb das erwartete Purple vollständig aus. Die Blüten sind sehr klebrig und der Duft ist deutlich aber nicht besonders intensiv. In der letzten Woche habe ich einige männliche Blüten heraus geknipst und mir sind auch ein paar Samen aufgefallen. Das selbe Problem hatte auch meine Hindu Kush. An Tag 97 habe ich die Pflanze nach 48 Stunden Dunkelheit abgeschnitten und kopfüber aufgehängt.

Day 35 Gave her a flush and fresh nutrients. Added a little maxibloom. Switched lights to 12/12. Did some defoliation. Nutrients per gallon .5 tsp maxigro .25 tsp maxibloom .25 tsp armor si .5 tsp calimagic .1 tsp 90/10 humic/fulvic acid

- LAS PLANTAS SIGUEN CON EL MISMO PLAN NUTRICIONAL - NO SE VEN CARENCIAS NI EXCESOS - el hps de 600 MANTIENE MI AMBIENTE SIN MAYORES INCONVENIENTES -NO SE VEN PLAGAS NI MAYORES PROBLEMAS

4/15/25 Things are progressing nicely. Some plants dont seem to be doing too much but 3 of them or so that are really standing out. Im curious if some of these are going to be longer flowering time than anticipated with the very obvious sativa dominant plants.

Hola a todos!!, esta semana he regado con AMAZONIA ROOTS de Namaste 1ml x litro de agua. Hice un corte apical en la rama principal, y el resto de los días he regado solo con agua. Feliz navidad amigos!!!🙌🙌🙌🎄🎄🎄😉😉😉

Hello everyone, The 3 plants are okay a little nutrient deficiency because the ph meter was 0.3 ph to high. The plants are almost ready for flipping to flower 7 days more in veg is enough. Thanks for stopping by and have a nice day. Best regards, Growfather

Hello everyone, The girls are finally outside in 20 gallon fabric pots. This season I have a greenhouse for them and I hope it goes good. Still have to build the first cages around them and start stretching them. 🎊🎉 finally, summer is here 🎉🎊 See you guys next week 🤞🤞🤘🤘👊👊👊

The stretch continues...It appears buds are setting and forming up quite nicely. I couldn't take watching the side with the vivosun bulb keep lagging behind more and more from the hortilux side, so I switched the bulb out. And within 3 days the jump in plant size was huge. The aroma is getting slightly stronger by the day. This is the last week with the early bud booster in the system. I have been putting the next weeks nutrient solution in my top off tank to steer the nutrients. It seems to work great!

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Update of the garden

К началу 3 недели снизил влажность до 60%. По листу добавил Б52 на 1 литр 1 миллилитр. Опрыскиваю по мере высыхания листьев. полив ежедневный под корень.