Cash Express โ Pheno A | Week 4
Full Steam Ahead
Welcome back to another chapter of the 8ร8 Adventure, where twelve cultivars are being documented individually from seed to harvest under a strict 12/12-from-seed schedule. Every phenotype follows its own diary, allowing each plant to reveal its unique personality while growing under exactly the same environment and feeding program.
Another week has passed, and the room continues to transform at an incredible pace.
What started as twelve tiny seedlings is rapidly becoming a forest filled with individual characters, each responding differently despite sharing identical conditions. Thatโs one of my favourite parts of this projectโwatching genetics tell their own stories.
This week also reminded me that Mother Nature has a funny sense of humour.
The environmental controller proudly displayed 33.3ยฐC alongside 63% humidity.
Apparently the grow room has decided that three is the lucky number this week.
Despite the higher temperatures, the elevated humidity helped keep the plants comfortable, and growth across the room never missed a beat. Every day the canopy became denser, greener, and noticeably more alive.
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Week 4 Environment
๐ก๏ธ Temperature: 33.3ยฐC
๐ง Relative Humidity: 63%
๐ก PPFD: 700โ800 ยตmol/mยฒ/s
๐ฑ Medium: Plagron Lightmix
? Growing Method: 12/12 From Seed
One interesting change this week wasnโt caused by the lightsโit was caused by the plants themselves.
Some phenotypes have entered a much stronger vertical growth phase, naturally moving closer to the fixtures. Those taller individuals are now receiving around 800 PPFD, while shorter plants remain closer to 700 PPFD.
The light hasnโt changed.
The plants have.
Watching each phenotype respond differently under identical conditions continues to be one of the most fascinating parts of this entire project.
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Feeding Strategy
The nutrition program has continued to evolve alongside the increasing demands of the garden.
During the establishment phase, irrigation remained around pH 5.8, creating ideal conditions for vigorous root development.
As those root systems expanded throughout the containers, the nutrient solution gradually shifted toward pH 6.1, allowing access to a broader spectrum of available nutrients within the substrate.
At the same time, nutrient concentration was increased progressively throughout the week, finishing around EC 1.8.
Nothing dramatic.
No aggressive jumps.
Simply allowing the plants to dictate the pace rather than forcing one.
Healthy roots create healthy plants, and the steady growth throughout the room suggests theyโre very happy with the direction weโre taking.
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Cash Express โ Pheno A
If this lady had a motto, it would probably be:
โCatch me if you can.โ
From the beginning sheโs shown an incredible desire to grow, and this week that enthusiasm became even more obvious.
While several of the other phenotypes are still building compact structures, Pheno A has decided sheโs in a hurry. Sheโs stretching confidently toward the light while simultaneously producing an impressive amount of lateral growth, creating a plant that feels both elegant and powerful.
What has impressed me most isnโt simply her height.
Itโs how well sheโs responding to every bit of training.
Throughout the week Iโve continued gently tucking leaves and applying light stress training wherever needed to open the canopy. Rather than slowing down, she seems to reward every adjustment by pushing even more vigorous side branches toward the light.
Itโs exactly the kind of response every grower hopes for.
Each newly exposed branch immediately begins reaching upward, gradually transforming the plant into a much more balanced structure with multiple future flowering sites.
The internodal spacing remains very attractiveโopen enough to allow airflow and light penetration, yet close enough to promise dense flower development later on.
Her main stem has thickened noticeably over the past week, giving her a sturdy backbone thatโs clearly preparing for the stretch thatโs still to come.
The foliage is lush, healthy, and beautifully coloured, while the fresh lime-green growth emerging at every tip is a constant reminder of just how actively sheโs developing.
Looking at her now, itโs easy to understand why this cultivar carries the name Cash Express.
She certainly isnโt wasting any time.
Every day she seems determined to be just a little taller, a little fuller, and a little stronger than she was the day before.
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Looking Ahead
Week 5 should become even more exciting.
With flowering now beginning to establish itself, Iโm expecting the stretch to continue while the first real flower formation starts becoming visible throughout the canopy.
Over the coming days Iโll be watching closely for:
โข Continued vertical stretch.
โข Development of the trained side branches.
โข Early flower site formation.
โข Structural balance after continued LST.
โข How she compares to her sister phenotype as flowering progresses.
If this weekโs momentum is anything to judge by, sheโs only just getting started.
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Thank You
A huge thank you to everyone following this 8ร8 Adventure and joining me each week as these incredible genetics continue their journey.
Thank you to the amazing GrowDiaries community for providing a place where growers from all around the world can learn from one another, share experiences, and celebrate this incredible hobby together.
A special thank you to Plagron for supplying the nutrition and cultivation support behind this entire project.
Thank you to Zamnesia for the outstanding genetics, equipment, and the opportunity to document every phenotype from seed to harvest.
And finally, thank you to everyone who stops by, leaves a comment, shares advice, or simply enjoys watching these plants develop into their own unique personalities.
Every phenotype follows the same path.
None of them walk it the same way.
Growers Love, and Iโll see you all next week. ๐ฑ๐