Views expressed are my own. All opinions are my own. The opinions expressed here belong solely to me and do not reflect the views of Growdiaries or Grandcru Genetics. The cannabis strain Grape Guava can be a purple strain, depending on its specific phenotype and genetic makeup. While not all phenotypes of Grape Guava are purple, some variations, such as the Zatix Grape Guava, are noted for their striking purple appearance due to the genetic expression of anthocyanin pigments. Grand Cru Genetics is a cannabis seed bank that emerged in 2018 from a group of breeders in Madrid to provide a satisfactory experience to all cannabis users. "If we do things, we do them well. Due to our experience in the sector and our taste for excellence, we know high quality and we seek it in everything we propose and do." "We have a “cultivate without giving up” philosophy that we apply to everything we do. We do not give up, we are friends of change, and we adapt as necessary in a still restricted sector." "We speak relaxed because we know how to relax. We are not intense or preachy; we accept everyone as they are, and we understand that farming is not for everyone. But for those who do, we are here to accompany you. We like to do it and tell it. We are experts in the field because we are the first to do it. We speak from experience and connect with others because we share the passion for cultivation." "Cannabis has the ability to show us a world of possibilities. When you cultivate and live its growth process, you enjoy a path full of emotions and not just the final destination. At Grand Cru we find beauty in small things. We are attentive, observant, detail-oriented and aware of everyday things, and we savor them without rushing." In a garden of green, Grape Guava gleams, With its fruity aroma, enchanting dreams. Clusters of grapes, guava's sweetness ignite, A strain so divine, in purple and white. Euphoria whispers, a lush fruity haze, Grape Guava's embrace, a tranquil daze. Off and away.@1400ppm. The increased CO2 allows plants to thrive at higher temperatures, which in turn necessitates higher humidity to maintain the ideal VPD for healthy growth and transpiration. 80F -5F = 75F LST with 70% RH = 0.72 kPa. Higher temperatures and humidity promote rapid growth, nutrient uptake, and photosynthesis while maintaining a lower stress level. Temperature influences the rate of enzymatic reactions involved in aerobic respiration. Enzymes, such as those involved in glycolysis, the Krebs cycle, and the electron transport chain, work most efficiently at an optimal temperature range. In low temperatures, enzymatic activity will slow down, thus reducing the rate of aerobic respiration. In high temperatures, enzymes can become denatured, thus impairing their function and stopping the process of aerobic respiration. Glucose is the primary fuel for aerobic respiration. The rate of aerobic respiration increases with the availability of glucose, as it is the starting point for glycolysis. If glucose levels are low, cells may rely on alternative energy sources such as fatty acids or amino acids , but these processes may yield less ATP or be less efficient. To determine this effect, carbon dioxide volume was measured (as carbon dioxide is an output of aerobic respiration) 18/6 with the 6 being IR. The near infrared (IR-a) borders around 700nm up to 1400nm @ photon par flux density of 1.8 instead of darkness, keeping temps overnight a neat 77F-80F. I think of my tent as a lung. What goes in must come out. When the rate of air going out exceeds the amount of air coming in, it creates a negative pressure. Tent concaves (bends in). If set up correctly, the RH will begin to drop slowly to the desired level I set, and the extraction turns off when it reaches the desired RH. The plant, as it performs cellular respiration, will always release more water into the air; therefore, the RH% of the tent overnight will increase, as long as oxidative phosphorylation is occurring. As soon as the RH% creeps back up to 55%, the extraction turns back on, over and over. This creates a strong pressure differential, which will work wonders with mass flow. Replicating high and low-pressure fronts in nature. Critical for oxygen diffusion at the critical time of peak cellular respiratory function.. Moisture will not transfer from a saturated atmosphere to another if that air is already at or above its saturation point, meaning the air can't hold any more water vapor. Once I understood that water is produced as a by product during cellular respiration, specifically at the very end of the electron transport chain (ETC) where electrons are finally transferred to molecular oxygen, the higher the RH of the air, the more resistance there is for more moisture to be added to that environment, and effects the ease with which it does so. But none of that water comes from the pot; it's pulled from the air. If you run high daytime RH, your medium/pot is 100% reliant on transpirational root pull to move water. ZERO evaporation happens across the atmosphere if the tent air has high RH%, the medium cannot release its water through evaporation. Once a canopy develops, light no longer slowly wicks and evaporates from the topsoil. The Soil-Plant-Atmosphere Continuum (SPAC) describes the continuous pathway and process of water movement, driven by a gradient in water potential, from the soil, through the plant's roots, stem, and leaves, and finally evaporating into the atmosphere through transpiration. There is evaporation, there is transpiration, and then there is evapotranspiration; Evapotranspiration (ET) is the combined total of two processes: evaporation (water lost directly from soil and surface water into the atmosphere) and transpiration (water released from plants to the atmosphere through their leaves). Evapotranspiration represents the total amount of water that moves from the medium into the air. There is no such thing as a medium with too much water, only a medium that retains too much for too long. The water must always flow efficiently from one atmosphere(Medium) to another(Air) in a timely manner. Moisture is a critical factor for bacterial growth and decay. Dictating how long it's allowed to sit in any one location for any given period is a key preferred control. To ensure a net reduction in a bacterial population, the rate of removal (ET) must exceed the rate of bacterial growth (decay rate), which is often modeled as a growth rate for the specific bacterium under the given conditions. By optimizing daytime VPD, we also optimize conditions for bacterial growth to explode exponentially above 77°F.. If water is allowed to sit in a medium without an escape within a timeframe, nothing good will happen. IF High RH is maintained overnight as well as during the day, placing 100% of water movement at the behest of daytime transpiration, roots can only pull where they can reach, and if soil is compressed above a certain point, moisture will become trapped in a medium with no way of moving day or night. This will begin the countdown for decay to take hold. When water stagnates in a medium, it loses oxygen, creating anaerobic conditions that foster the growth of harmful microorganisms like bacteria and fungi, which can produce toxins and disease vectors. Thigmomorphogenesis, the process by which plants respond to mechanical stimuli like touch by altering their growth and development, results in significant morphological changes to improve survival against mechanical perturbations. This complex response involves sensing touch and initiating physiological and genetic responses, leading to changes in form and structure over days or weeks. The process is triggered by physical forces such as wind, rain, or touch. Plants adapt to these stimuli by changing their shape and structure, which may include slower growth, thickened stems, or altered leaf development. Plants possess sophisticated mechanisms to detect even subtle mechanical stimuli and initiate responses. A variety of molecules, including calcium ions, jasmonates, ethylene, and nitric oxide, are involved in signaling these mechanical inputs. Touch can induce the expression of genes that encode proteins for calcium sensing, cell wall modification, and defense mechanisms. A plant exposed to constant wind may become shorter and sturdier. A plant that is touched frequently might grow more slowly to conserve energy and develop thicker cell walls. These changes increase a plant's resilience and ability to survive in harsh environments. Let's get Thiggy with it.

Flower Day 2: Pog is a star. She is loving the quad style and seems to be putting mains into every space she can. They are forming low down each stem so i am hoping i can keep them developing from below better to fill each stem. She is a good 24 inches now and hopefully finished the stretch at that. I am due at day 7 to give her a defol and clear out the small undeveloped , shadowed budlets. She isnt putting out any smell as such but is starting to try. She is my secret favourite so far but dont tell her cousins !!! Have a great growing week

7/5/25 plant is stretching. Not sure if its preflowering or just being outside in a bigger pot. Im just going to let her grow naturally and see how it turns out. I may end up with just one diary of each strain at the moment. But im also not sure whether im going to be doing indoor or outdoor based on personal circumstances.

This plant has a solid stench of pure ripe lemons. So much aroma and color in every bud, purples, to dark green, to lime green, to solid frost. This one definitely a fun strain to watch grow and tend too for the last few months. She’s definitely a hungry girl, seemed to be the only strain out of the three that accepted and thrived with full feed nutrients. Would definitely recommend this Strain to someone For a nice uplifting day smoke, also seems to do me good for some pain and stress relief.

Hello everyone 😎 Day 30 she grew fast with a great structure and with a beautiful green colour on the leaves. She is responding superbly to topping and Ist aswell growing like nothing has been done to her! Have a great day 👨‍🌾🏻

The first white pistils can clearly be seen now. I guess that's why she's getting more yellow leaves at the base but this also means that she is in the preflowering phase :) Due to this and the fact that the weather is great, she needs more water now. Aside from that she is starting to smell a bit more in the morning.

It’s officially week 4 of flower. It’s day 36 since I flipped to 12/12 and day 25 since we began seeing flowers

4. Woche hat begonnen

10/24/18-Day 67. PreBloom week with 16 hr light schedule.

Day 45 in flower... Trichomes are about 80% milk and no amber... The paint and big Z are 7-9 weekers and orange cake is 9-10... Def few weeks on the orange cake... But getting close to how I like it on the other two... The smells are outta this world... Orange cake smells like orange cake... Very orange like it's nuts... Never smelt anything like it tbh... The paint is a different pheno than previous ones because there's usually a chemical skunk smell but this is a fruity pebble smell with layers of earth smell and a sticky presence that doesn't go away for a long time lol... The big Z is another sweet smelling but more along the smell of a mouth full of Skittles and that dirt earth smell aftertones... They're awesome and I'm really excited! Day 46 They fattened up over night! Coming to n end... I did find little clusters of amber trichomes on the paint and I can't find many clear on the big Z... So it's right where I want it!

As of day 21, the Blackberry Kush is growing sizable despite the very deformed growth. After really double checking every parameter last week, I feel comfortable saying it is a genetic issue. Thank you to those who commented and responded to the grow question over the past weeks, it really helps! I want to see how this plant grows and what it yields despite the issue, it should be interesting to see what kind of buds it can end up making. I will perform some LST soon as the plant is growing taller even after topping. I with the twisted leaves and wonky growth, it's actually letting plenty of light penetrate to the lower/center portions of the plant which may have it's own positive outcomes (what can I say, I'm an optimist!) Happy growing everyone, and stay safe! 👍🌱 Day 22: started LST to promote lateral growth. Day 24: even though the twisted leaf growth is keeping the foliage from getting very dense, I am happy that this plant is still a good size and is definitely not stunted! If anything it is acting like a defoliated plant, letting plenty of light penetrate to the lower growth tips and center of the plant. Day 25: earliest signs of flowering. Day 26: 5x per day watering, 15 second duration.

It grew so fast, I’d definitely recommend it for a first time grower, im gonna try growing a photo next time, It’s was very sweet tasting, but a bit dry think I need to learn a bit more about drying and curing before my next grow

Buenas a todos! Esta semana solo regue con trico más por última vez, aguardando que estén listas para cortar, solo se regara con agua. Utilice 1gr x litro de agua de trico +(Con un ph 6.8) , las ppm no las controle, lo que si debo reconocer que la planta al estar controlada en altura si noto que la cantidad de flores no será igual que su antecesora del diario anterior. Pero para alguien que no quiere que la planta no se haga alta, es una buena alternativa, ya que con la malla a 70 centímetros del suelo, en altura total no debe pasar los 120 cm( la medi y tiene en su copa más alta, 116 cm)

Day 74 - Cheese - Been watering with only clean ph every 3-4 days and watching the trichomes. They're mostly cloudy with no amber. Just gonna keep watching and letting it swell. Super Lemon Haze - Buds are coming in nicely. Purple leaves coming in near the top. Gets cold in the basement at night, so I'm not surprised with a bit of colour change. The tip burn doesn't seem to be moving too fast on the leaves it effected and the rest of the growth is coming in nicely. I Think there should be only a few weeks left now, so probably one more nutrient feed and onto flush as well. End of week 11 - For my first grow, I've already made it far past my expectations. Love growing and love these plants. Stay tuned for cheese harvest!

The summer is here. Black cream showing some colors but not what i imagine. But with out a dought some of the best buds i Have seen. Shes know senescence. Just let the lower buds get some power in 2 more weeks shes done. Im liking a lot the way CoshKush is going Very promissing branchs and a inner purple color to the picilis. Lets se as she fatns. Weeding Cake its looking like shes reduced grow speed. Like the tick piscilis now starting to go orange Bomberry looked so promessing in vege and now not so much. Late as allways.... Shes late but very hairy.....Promessing again :D Chear BrotherHood

I (pre-moistened) worked in 2.5 gallons of de-chlorinated tap water, with my fingers into this high-porosity soilless growing medium. This variant is very dry, and seems to reject water, until moistened(3cu ft compressed, Agro a5-hp from local nursery). Even after the 2.5 gallons of water was worked in (with no runoff), there was still a dry patch at the bottom of the pot.. I figured it would start to absorb from the wet medium on top, over time. It is now Day 10, and the moistened medium never needed to be watered since day 1. The medium is almost dry enough to be watered (see final picture). Maybe one or two more days. I will poke/scratch the soil daily, to ensure that I wait long enough, to not over-water.

Hi everyone 🤗 This week the two Kosher Tangie Kush were harvested by Amsterdam Genetics 😍. extremely good phenotypes. The blue cheese pheno 2 and 3 were placed in the darkroom according to the video. These were harvested yesterday, from which the pictures will come in the next update :-). All others need 2-3 weeks. I wish you lots of fun with the diary, stay healthy 🙏🏻 and let it grow 🌱

Fed compost tea with added Bio Pk on Wednesday, plain water all following feedings. Not really having to do much with her at the moment, occasionally defoliate to let some light and air in at blocked sites. She is swelling nicely. She seems to be growing well without any issues.

Flower Week 6 Day 42 to 48 - 4/29 to 5/5 They both look very healthy this week. The calyx are swelling with maturing hairs, the pistols are orange, the trichomes are mostly white, and the leaves are fading/changing colors - still not ripe enough for me, but flushing with half nute feeds now. Feed this week was another auto pot reservoir flush feed at 400ppm total before add-ins. I used 400ppm of Bloom concentrate mix (recipe week 5). And then, I also added 1ml/gal of CaliMagic (General Hydroponics 1-0-0). PH balance this week was for 5.8 where I plan to maintain it until harvest. Next week will continue the same half nute feed. I will continue to monitor the signs of trichomes, pistols, and calyx for a better harvest and allow the buds to mature more.