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Screwdriver OG Feminized Grow Report

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Screwdriver OG Feminized can turn heads, and we were mesmerised by the vivid purple hues displayed throughout flowering. Its morphology was tall, with many bud-producing side branches, while its terpene profile offered an aroma reminiscent of the tropics. The effects are immediate, and for most, the experience imparts many classic sativa characteristics.

Flowering stage: 64 days

Total time, seed to harvest: 99 days

Final yield: 137 grams

THC content: 25.69%

Screwdriver OG seeds combine two flavour-packed genetics into one offering. The lineage consists of Purple Punch crossed with Clementine, and we are excited to detail precisely how it grows in this latest grow report.

We started growing in our indoor garden, equipped with everything a grower needs. We had multiple circulating fans moving air through the canopy, and our carbon filter filtered all the aromas arising from the plants. Our Screwdriver OG Feminized plants were grown in BAC Lava Soil Mix, and our nutrient regimen consisted of Bio Grow and Bio Bloom. Throughout the cultivation cycle, we used a high-powered 1000W Green Power Phillips HPS bulb fixed 300 cm above the soil.

Environmental conditions are essential; temperatures reached 23°C during the day and dropped to 21°C at night. Humidity would be reduced as the bud biomass increases, and to start our Screwdriver OG Feminized, we adjusted the room to 65% humidity. The EC of our feed solution would also be adjusted based on the stage of life, but the pH of our solution was constantly adjusted to 6.2. 

Screwdriver OG Feminized are photoperiod dependent and will produce only female plants. This means we will have to change the light schedule to induce flowering. For the vegetative cycle, we kept a light schedule of 18 hours on and 6 hours off each day. For the flowering cycle, the lighting schedule was changed to 12 hours on, 12 hours off.

The Screwdriver OG Feminized seeds were started in jiffy pellets, which offer moisture, darkness, and a minimal amount of nutrients. The germination rate was 100%, and after the cotyledon emerged from our jiffy pellet’s top, it was placed into a 1-litre pot containing our soil. 

It was not until the third day that the seedling needed water, and we gave our Screwdriver OG Feminized a combination of water and rooting stimulant at an EC of 0.8. The total solution volume was 100 ml, which we applied at the base of the stem.

In week two, our Screwdriver OG Feminized had already doubled in height, which meant the root zone was expanding. We transplanted our Screwdriver OG Feminized into a 5-litre container to encourage vigorous growth. We continued to feed 100 ml of the solution but replaced the rooting stimulant with Bio Grow. The EC was raised to 1.4, and because the roots had not yet expanded into the new soil, watering was focused at the base of the Screwdriver OG Feminized stem.

By week three, we were looking at a plant with excellent vertical growth. One thing we noticed with this particular plant; the branching was not symmetrical. Usually, plants have two branches coming from the same juncture on the apical stem, but this Screwdriver OG Feminized had a mind of its own. The staggered branching worked to our advantage, so there are no complaints.

There was less shading from the upper limbs, which aided in light penetration and airflow through the canopy. On many plants, the side branches do not keep pace with the apical stem, but we saw incredible growth from the side branches of our Screwdriver OG Feminized. This morphology would increase bud sites later and a significantly larger yield.

At the start of week four, we realised we had not used our beneficial insects starting week one. Although we did not see any damage on the leaves, we wanted to be proactive and release Neoseiulus Californicus and Amblyseiuis Swirskii. These insects hunt and destroy many of the plant-damaging insects. Thrips, fungus gnats, and two-spotted spider mites are among the favourite meals for these predators. 

Growth of our Screwdriver OG Feminized continued at a steady pace. The plant was healthy deep green, with sizeable nine-bladed fan leaves. The side branches continued to keep pace with the upper portion of the plant. We decided not to do any plant training and let our Screwdriver OG Feminized grow naturally.

We decided to flip our Screwdriver OG Feminized into flower in week five by adjusting the light schedule from 18/6 to 12/12. Our plant was now 83 cm tall, and we knew there would be a growth spurt as this plant transitioned into flower. Considering how much space we had between the current canopy and the bottom of our light, we could have even transitioned into flower last week. 

Total darkness is required for flowering, so make sure you have complete darkness in the growing area. Lights from under a door, sizeable bright LCD screens on grow equipment, and opening the doors to check on / work on the plants during the lights-off cycle can lead to undesirable traits in any cannabis plant. Bio Bloom nutrients replaced Bio Grow, and we increased the strength of our solution to 1.8 EC. The volume of solution was raised from 800 ml to 1 litre per watering.

As predicted, week six marked a growth spurt. Screwdriver OG Feminized now stood at 116 cm and was the most considerable week-to-week difference we saw this entire grow. We increased the solution to 1500 ml, and the nutrient load remained at 1.8 EC. The pH also remained unchanged at 6.2. 

Internodal spacing increased during the stretch, giving the plant a lanky appearance and required support to keep it from leaning. We subsequently added plastic garden stakes to the container and attached them to the apical stem for support.

Week seven was started by doing the first of many pure water flushes on our Screwdriver OG Feminized. Always remember, when feeding aggressively, pockets of untapped nutrients can accumulate in the soil. Heavy bottle nutrient use can also lead to a build-up of sodium in the soil, and flushing can help counteract these issues. After the soil was rinsed of excess nutrients and salts, we continued feeding our plant Bio Bloom nutrients at the target EC of 1.8.

In week eight, our Screwdriver OG Feminized had grown 16 cm, indicating that the plant shifted priorities from vertical growth to flower production. A couple of weeks had passed since we saw the first stigmas emerge, and by now, they had formed into large fingers covering the tips of every stem. Trichome production was also in full swing, littering the flowers and surrounding foliage.

It had been four weeks since the last application of Neoseiulus Californicus and Amblyseius Swirskii. Part of our IPM strategy is scouting the plants daily; thus far, we did not see any damage on our Screwdriver OG Feminized. We did not become complacent, though; we knew infestations could happen quickly. We hung a new sachet of each predator insect from the base of our plant to stay vigilant against pests.

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