250W Cannabis Grow Journal – 6.2 oz Yield
Number of Plants: 1
Yield: 175.9 g (6.2 oz)
Grow Light: 250W HPS
Note: This paritcular model is no longer available. However, a very similar lamp is available here. I haven’t personally used this lamp, but it is well rated. Don’t forget to get a 250W HPS bulb!
Total Cost of Electricity
$278 ($45/ounce or $1.60/gram)
The electricity cost was calculated with our local electricity price of $0.37/kWh. I didn’t have to buy anything new for this grow besides seeds, but if you’re a grower starting from scratch it would have cost $881 ($142/ounce) to do this grow, including the full cost of the setup, seeds, and the cost of electricity.
Seed Germination: 2/15 | Switch to Flowering: 3/28 | Harvest: 6/20
4 months, 5 days
A Few More Grow Details
Strain: Original Amnesia by Dinafem (I ordered the seeds from Seedsman)
Medium: Grown Hydroponically (Top-fed DWC). Here’s a tutorial showing exactly how to grow this way. Once you go hydro you won’t go back! 😉
HydroFarm Sunburst (250W HPS) – The Sunburst model I used for this grow journal is no longer available. However, a very similar lamp is available here (this one seems even better than the one I used because it can also run a 400W light if you want to upgrade down the road). I haven’t personally used this lamp, but it is well rated. Don’t forget to get a 250W HPS bulb!
Hydroponic Nutrients: General Hydroponics Flora Nutrient trio – I used the schedule on the side of the bottle at half strength. I also made a PDF showing exactly what nutrient levels I used: GH Flora Nutrient Trio DWC schedule
Supplement: Hydroguard – for root health
Nothing Better Than Holding a Handful of Homegrown Buds!
2/15 – 3 Original Amnesia Seeds Sprouted
2/23 – Picked Best Plant Out of Three
Unfortunately I only planned to grow one plant, so I had to throw away the losers 🙁
Here’s our winner! It grew faster and more vigorously than the other two.
3/5 – Plant Training Session 1 – Make Base
I continued to give the plant water and light, but didn’t do anything else until it got bigger. This is what the seedling looked like right before I started cannabis plant training. Until this point the plant has been allowed to grow naturally without any interference. Now it’s time to start training!
Get ready, this day of training is the most extreme in the whole grow 🙂
Next: Topped down to 3rd node (cut off top of plant just above the 3rd node)
Then I removed all other growth besides the top two growth tips and their fan leaves.
This creates a perfect base for further plant training. This step may seem extreme, but at this stage the plant will recover quickly, and the even base manifold will make training easier for the rest of the grow.
3/9 – Plant Training Session 2 – Spread Out & Tie Down
This is the plant 4 days after the last picture, she’s grown in quite a bit!
Now it was time for some LST (low stress training). I tied the two main colas (which we created in the last step) down with plant twisty tie. The purpose of this step was to start spreading the plant out.
It’s important to try to do any bending and tying down when the stem is still young and bendy. As a stem gets older, it becomes hard and woody, which makes it very difficult to bend without possibly causing damage to the plant. These stems were easy to bend.
Here’s the plant after I tied it down with twisty tie
Note: For all LST throughout this entire grow I use plant twisty tie to hook around stems so I can tie them down where I want.
In the next picture, I have arrows pointing to where I hooked the twisty tie for this step. One is hooked to the edge of the lid, while the other is hooked around a net pot. You can hook your twisty tie to almost anything, but I like attaching stems to things on the lid since they stay in the same plant relative to your plant even if you look inside the tank.
Here’s a closeup of a twisty tie being hooked around a stem for LST
You can hook the end of a twisty tie to almost anything, but I like to attach it to the lid (or a net pot) since it never moves in relation to the plant
3/12 – Plant Training Session 3 – Bend/Tie Plant Down and Towards the Middle of Tub
Time for more LST! I used plant twist tie to start pulling the plant more towards the center of the tub to continue helping it spread out more under the light
3/14 – Plant Training Session 4 – LST & Topped Plant Again
I used plant twist tie to continue pulling the plant more towards the center of the tub (sorry I forgot to take a pic before I tied the plant over!)
The plant had now grown 3 more nodes on each of the two main colas, and it’s time for the last topping. I topped (cut off the tips of) the two main stems/colas we created before. The arrows in the picture below point at where the plant is about to be cut/topped.
Where the cuts will be made
Here are the ends I cut off.
Below is a picture of the plant after the cuts. It’s hard to see the difference because it was just the tips taken away.
A closeup one of the places where the cannabis plant was topped – you can see where the end was cut off.
3/16 – Plant Training Session 5 – Create 8 Main Colas
Today we will remove all remaining growth on the plant except for 8 main colas! Today is the last day of training! From now on our job will pretty much be arranging the colas if they fall over.
Here’s that plant 2 days later, and you can see all the leaves have turned up again. All the bright yellow spots are the growth tips that are left. New growth tips tend to be lighter than the rest of the plant, but this is a little more yellow than normal. This pic was taken in different lighting from the others so it’s possible the strange coloring was caused by the light, but I’m not certain the cause.
It’s possible the pH was too high or low, or that the topping caused some shock. I may have needed to do a complete reservoir change the same time I topped the plant last time, but whatever problem isn’t pronouced so I know the plant is overall healthy and will be able to move forward with training and recover quickly.
Next – I removed the big top fan leaves so you could get a better idea of what’s going on in the structure of the plant. Remember each yellow part is a growth tip (where stems form and buds grow)
After – I removed all but 8 main tops/colas/growth tips
Here’s a view from a slightly different angle so you can better see the cuts that were made to leave 8 colas behind. I don’t think it matters much exactly which 8 colas you choose to leave, as long as they’re left in pairs. The main goal of this step was to create 8 colas.
Training is just about done!
3/21 – Plant Continues to Grow
I haven’t done anything at all since the last pics besides maintaining the reservoir, but I just wanted to show how the cannabis plant looks as it grows, and how fast it recovers from a training session at this point! It has been less than a week since the last update!
From the side so you can see how those colas are growing out
The plant is getting big enough to start tipping the net pot. Luckily with the size of these netpots and the way they’re shaped, they can’t really fall over. I choose not to do anything about it because it actually seems to be suiting my purposes.
3/27 – Plant Training Session 6 – Last Day of Training & Switch to the Flowering Stage
I’ve just continued letting the plant grow naturally since the last training session.
In my space, I have about 3 foot of height total as far as the space the plant can be in, so I want a final plant that is about 3 feet tall. The plant is about 1.5 feet tall at this point, which is half the final desired size. That means it’s time to switch to the cannabis flowering stage.
Why switch when the plant is half the desired height? After a cannabis plant gets the signal to start budding it goes through a “flowering stretch” which means that it will dramatically increase in size and height. On average cannabis plants about double in size after the switch to the flowering stage, though some strains don’t stretch much at all, while other strains can even triple in height! But the general rule is to expect the plant to double in size.
I want to clean up the plant one last time before the switch. I want to make sure that only the top canopy is left, and I want to make sure all 8 colas are evenly spread out under the light.
I remove all growth except the top 2-3 nodes/bud sites on each of my main colas. This is where I want the plant to focus all its energy.
Some people call the practice of removing lower growth “lollipopping” or say that the plant has been “lollipopped.” But it’s nothing fancy, we’re just removing everything that the plant doesn’t need to make buds. This causes the plant to put all its growing energy in just the places we want.
Lastly I used the twisty tie plus LST to tie down everything that’s left over. Now all the colas are the same height, and they’re evenly spread out under the grow light for maximum coverage.
Here’s a side view to show you what I mean about all the main stems/colas being the same height
The next day, I switched the plant to the flowering stage by changing the light timer to a 12/12 schedule(giving 12 hours of light, and 12 hours of darkness each day). Once I make that switch, the “flowering stage” has begun!
3/30 – Canopy is Shaping Up Great!
Here’s a top and side picture from a few days later to show you how that canopy is shaping up under the light. All the stems have stood back up and are starting to stretch!
Nothing left to do now but wait!
4/6 – Plant is Stretching!
Here’s what the plant looks like a week later. It has added several inches in height, and still getting taller every day! The entire length of each cola is going to be covered with buds by the end, so I’m welcoming and hoping for a big flowering stretch!
5/3 – Buds Fattening Up!
It’s been just under a month since the last pic and I haven’t done anything except change the reservoir every week. The plant has gotten a little taller but most of the growth has gone into buds! Now we can see that those 8 colas we created are really fattening up 🙂
6/1 – Buds Continue Fattening Up!
Not much to report, which is a good thing in the flowering stage 🙂 I still haven’t been doing anything except change the nutrient reservoir every week. The flowering stage is mostly a waiting game!
Harvest Day! – 6/20
Here’s some last pictures of our Original Amnesia plant before it gets taken down. It’s always a little bitter-sweet for me on harvest day because I usually grow attached to the plant, and it’s the time when I say goodbye. But who am I kidding, harvest day is awesome.
After all the branches have been cut down, and the leaves have been trimmed off.
Time for drying! These were hung upside down in my closet.
Put Dried Buds in Jars – 6/25
The plant has already been harvested and buds have been dried, but our work isn’t quite over yet. Curing your buds in jars for at least 2 weeks dramatically improves the quality, perceived potency, smoothness and smell of the final product.
This step provides the right conditions for certain chemical processes to take place. Basically “curing” means you open the jars every day to give the buds fresh air. A part of curing is also to prevent mold by making sure the buds never feel wet on the outside at any point while in the jars.
After 2 weeks in the jars, you officially have your own homegrown nugs that are ready to go! Curing for longer can continue to increase quality, up to a few months, but 2 weeks is considered the standard.
Final Yield & Strain Review
Altogether, the Original Amnesia plant yielded 175.9 grams, or about 6.2 ounces.
Yield: 6.2 ounces
These buds were dense and sticky with green buds! The plant was easy to grow and seems to be a good yielder. I barely had to do anything to keep it happy, and it was very forgiving when I made mistakes.
The effects and smell reminded me of an original skunk from years of lore. It smells very skunky, and the smell drifts through the house whenever I open a jar. These Original Amnesia buds cause a mellow and happy effect without being overwhelming, and I think it would be great choice for anyone who wants to relax without being “out of it!”
Grow Tent: $85
Grow Light: $250
Sunburst 250W MH/HPS with Built-in Ballast – The original model is no longer available. However, a very similar lamp is available here. I haven’t personally used this lamp, but it is well rated. Make sure to also get a 250W HPS bulb!
Oscillating Fans: $30
- Two x clip-on fans circulating air around and over plants
Exhaust Fan: $30
One could also do this exact same cannabis grow in another growing medium like soil or coco coir. In fact, my last grow in this setup was using coco coir, and I got just about the same yield.
- $4 10-gallon container with lid Sterilite 10-gallon tote (measures about 21″x15″x13″)
- $9 Hydroton/Hydrocorn Any type of hydroton or hydrocorn will work great
- $14 Net Pots (3.75”) We happen to use NGW Net Pots
- $17 Water Pump EcoPlus-185 Water Pump
- $6 Drip Manifold DiG Corps 6-outlet Adjustable Drip Manifold
- $15 Air Pump (2 outlets) EcoPLus 2 Outlet Air Pump
- $16 2 x Large Cylinder Air Stones EcoPlus Large Cylindrical airstones
- $9 ½” Vinyl Tubing Raindrip or EcoPlus ½” Vinyl Tubing
- $5 ¼” Vinyl Tubing Raindrip or DiG ¼” Vinyl Tubing
- $3 Riser Plastic ½” Male NPT to ½” Barb
- $17 Starter cubes General Hydroponics Rapid Rooters
Cost Breakdown (Including Electricity)
Setup & Supplies: $603
Cost for Complete Setup & Supplies: $603 (explained above – I didn’t have to pay for this since I already had my whole setup, but this is what it would cost to get all the supplies from scratch)
Setup Cost for Me (since I didn’t need supplies): $28 for seeds
Cost of Electricity: $278.12
This includes the cost of running the grow light, fan, water pump and air pump for the entire grow.
Including cost for running the grow light, fan, water pump and air pump for the entire grow would cost…
Grow Light: $161
Veg: 41 days of 18/6 = 738 hours
Flower: 84 days of 12/12 = 1,008 hours
Total hours: 1,746 light hours (total hours with 250W HPS turned on)
At $0.37/kWh (we get charged at different rates each month, but this is on the higher end just to be fair), the entire grow cost about $161 in electricity for light.
HOURS x COST/HOUR =
1746 x (0.37 x 0.250) = $161
Water Pump: $6.12
Total Hours: 624 hours(26 days x 24 hours/day)
Water pump: 26.5 watt
At $0.37/kWh (we get charged at different rates each month, but this is on the higher end just to be fair), the entire grow cost about $6.12 in electricity for the water pump.
HOURS x COST/HOUR = $6.12
624 x (0.37 x 0.0265) =$6.12
Air Pump: $3.33
Total Hours: 3000 hours(125 days x 24 hours/day)
Air pump: 3 watt
At $0.37/kWh (we get charged at different rates each month, but this is on the higher end just to be fair), the entire grow cost about $6.12 in electricity for the air pump.
HOURS x COST/HOUR =
3000 x (0.37 x 0.003 =$3.33
Exhaust Fan: $41.07
Total Hours: 3000 hours(125 days x 24 hours/day)
Exhaust Fan: 37 watt
At $0.37/kWh (we get charged at different rates each month, but this is on the higher end just to be fair), the entire grow cost about $41.07 in electricity for the fan.
HOURS x COST/HOUR =
3000 x (0.37 x 0.037 =$41.07
2 Ocillating Fans: $66.60
Total Hours: 3000 hours(125 days x 24 hours/day)
Exhaust Fan: 30 watt x 2 = 60W
At $0.37/kWh (we get charged at different rates each month, but this is on the higher end just to be fair), the entire grow cost about $66.60 in electricity for the fans.
HOURS x COST/HOUR =
3000 x (0.37 x 0.060) =$66.60
Total for Everything: $881 ($142/ounce)
This is how much it would cost to get everything used in the entire grow (including nutrients, grow tent, grow light, tent, hydroponic setup, etc), as well as pay for the electricity in the grow. This includes literally everything even if you currently have absolutely zero growing supplies.
My Cost for This Grow: $306 ($49/ounce)
All I paid for during this grow was seeds and electricity. After the initial investment, you don’t often have to buy more supplies except for seeds, nutrients & bulbs every few grows, so your price to produce drops dramatically your second grow!
This grow journal covers the whole grow, and explains the 6-step training process used on the plant to improve yields!
Amnesia Haze Automatic Grow Report
Amnesia Haze Automatic offers both beginner and veteran growers an easy and rapid harvest of fruity flowers. Check out how we grew her, and what strategies we used in each stage.
Amnesia Haze belongs to the world-famous Amnesia lineage. This variety carries the family name with pride, offering massive THC levels and a stimulating high characteristic of Dutch genetics. Check out our grow report to learn exactly how to cultivate this legendary variety. Then, discover the genetic history, effects, and morphology of this durable and exciting strain.
- 60x60cm growing space
- 220/360m³ extraction fan (running at 220)
- 20W oscillating fan
- Air pot
- 2 100W LEDs
- Nutrient-loaded soil
- Reverse osmosis water
Amnesia Haze Automatic Grow Report: Seedling Stage
After our breeders perfected Amnesia Haze Automatic, we decided to put our skills to the test and dedicate some time to cultivating the strain. We documented the entire process so you can achieve the same results for yourself!
- Germination: As with all grows, the journey began with a small and humble seed. We dropped it into a glass of tap water and left it to soak for 36 hours until the taproot emerged from the shell.
- Growing medium: We selected a mix of nutrient-loaded soil and a layer of nitrogen-rich worm humus to line the bottom of the pot.
- Potting up: We placed the seed into a shallow hole (taproot facing down) in its final container, a 9L airpot designed to assist plants in developing healthy and fibrous roots.
- Lighting: We rigged up two 100W LED lights to see our plant through the entire growing cycle. We selected an 18/6 cycle to ensure optimal photosynthesis while bringing down the overall cost of the growing operation.
- Cotyledon leaves: The first two cotyledon leaves quickly emerged from the soil within days of potting up. The first two true leaves appeared four days later, marking the start of the vegetative phase.
- Nutrients: Throughout the seedling stage, we applied the following nutrients formula per litre of reverse osmosis water:
– 1.5ml/l Seaweed extract
– 1.3ml/l Compost Tea
– 0.65ml/l mycorrhizal fungi
Amnesia Haze Automatic
|Amnesia Haze Automatic|
|Amnesia x Ruderalis|
|350 – 400 gr/m2|
|50 – 100 cm|
|7 – 8 weeks|
|Sativa 50% Indica 20% Ruderalis 30%|
|130 – 180 gr/plant|
|100 – 120 cm|
|11 – 12 weeks after sprouting|
|Cerebral and uplifting|
Amnesia Haze Automatic Grow Report: Vegetative Stage
As a fast-growing cultivar, Amnesia Haze Auto blasted through the vegetative phase—a period defined by the productivity of fan leaves and a general increase in size. Overall, the vegetative phase lasted only four weeks. Here are the steps we took during this time:
- Lighting: We kept the 100W LEDs on an 18/6 cycle. We suspended the light source 110cm above the canopy to give the plant room to expand throughout the vegetative phase. Towards the end of this stage, the canopy sat around 70cm from the light source.
- Watering: To keep things simple, and to avoid over/underwatering, we only watered after the top inch of soil became dry. This ended up averaging out to around 0.5l of reverse osmosis water every 24 hours.
- Environment: Using a thermo-hygrometer to measure environmental factors, we managed to keep the average temperature at 20°C, with relative humidity at 45-50%. We maintained this sweet spot using a fan, exhaust, and a humidity sensor rigged up in the grow tent.
- Nutrients: We tailored our nutrient formulas week by week to provide the plant with varying levels of minerals depending on the stage of growth. During the veg phase nitrogen is the most important NPK value, so our nutrients ratio targeted this with a 2:1:2 and 4:2:3 fertiliser. In addition, we complemented our feeding with the following throughout the rest of the vegetative phase:
Week Three and Four
- 0.5ml/l calcium/magnesium
- 1ml/l seaweed extract
- 0.6ml/l sugar beet extract
- 1.3ml/l mycorrizhal fungi
- 1.3ml/l compost tea
Potential issues: During the fourth week of the grow, our plant began to exhibit signs of fertiliser burn on the leaves. We put this down to an excess amount of worm humus placed in with the main growing medium. Next time, we plan on avoiding this amendment to prevent the same symptoms arising.
Pre-flower: Our Amnesia Haze Automatic specimen began shifting into the flowering phase in the fourth week of the vegetative stage. Small calyxes with protruding pistils began emerging at the nodes, marking the start of blooming.
|(Seedling stage)||(Week 3)||(Week 4)|
Amnesia Haze Automatic Grow Report: Flowering Stage
Our plant spent most of her life cycle in the flowering phase, which gave her adequate time to develop large and resinous flowers. It only took six weeks for her pre-flowers to grow into fully ripe, large, and resinous colas.
- Lighting: As an autoflowering variety, Amnesia Haze Auto doesn’t require a change in the light cycle to trigger flowering. We kept our LEDs running on an 18/6 cycle, suspended now 45cm above the tip of the canopy.
- Watering: As the plant grew larger and the colas matured, her demand for water increased. After waiting for the top layer of soil to dry, we gave her an average of 1.5l of reverse osmosis water per day.
- Environment: We reduced the humidity to 40% by adjusting the settings on the sensor. This helped reduce the risk of mould formation as the flowers started to become more dense and prone to infection. We raised the temperature to 25°C using a heater to promote an optimal flowering environment.
- Defoliation: We armed ourselves with trimming scissors and chopped off older and yellowing fan leaves throughout the flowering phase. This decision allowed us to increase the amount of light penetrating the canopy and improve the airflow, which would help to deter mould formation. During the first week, we defoliated all of the fan leaves from the main stem to achieve these advantages.
- LST: We conducted low-stress training during week seven to promote increased lateral growth. This training technique allowed the plant to develop a wider canopy with more bud sites, as opposed to a more vertical plant with more energy directed towards the central cola.
During the flowering stage, we started to notice filamentous fungi begin to overtake the surface of the soil. Fearing a root-rotting pathogen, we were pleased to realise that these were in fact hyphae from the mycorrhizal mycelium we had introduced to the soil. These organisms work in symbiosis with plant roots and help them to access nutrients.
An Unusual Mutation
During week seven, a calyx that emerged to the side of a node right next to the main stem. By week ten, it became a fully formed yet compact flower. We hope to see some skilled growers isolate and develop this odd yet fascinating trait!
- Nutrients: We modified the original nutrients blend to cater for increased demand for potassium and phosphorus during the flowering phase. Check out the lists below for the strategies we utilised week by week during bloom:
During the first week of flowering, we switched up the nutrients slightly to gently transition the plant into a flowering feeding cycle. We started with an NPK 5:7:10 fertiliser, and then we finished with an NPK ratio of 4:7:10.
- 0.5ml/l calcium/magnesium
- 0.3ml/l seaweed extract
- 0.3ml/l humic and fulvic acid
- 1.3ml/l mycorrizhal fungi
- 1.3ml/l compost tea
|(Week 5)||(Week 6)||(Week 7)|
Here, we started to ramp up the necessary minerals required for healthy flower development. We boosted calcium and magnesium levels by 1ml/l. Additional microbes were added to help the root system access these extra nutrients.
The feeding schedule remained largely identical to week six, with the addition of more seaweed extract and the removal of mycorrhizal fungi amendments.
After seeing the early signs of nutritional deficiencies in some fan leaves, we slightly increase the levels of sugar beet extract in an attempt to rectify the situation.
We continued observing more yellowing so decided to boost the sugar beet and fulvic and humic acid extracts by around 50%. iThis strategy quickly solved the deficiencies, and the plant started to appear healthy almost right away!
|(Week 8)||(Week 9)||(Week 10)|
The final week of feeding before the flush. By this point, the flowers were looking plump, resinous, and loaded with trichomes. We added even more seaweed extract to give the buds one last boost while holding back on more calcium and magnesium.
- Flushing: We flushed our plant thoroughly one week before harvest to remove excess nutrients from the growing medium. Using reverse osmosis water, we completely flooded the soil every time it dried out. We waited for it to drain and immediately flooded it twice more. This made for smoother and better-tasting buds.
- Harvest: We harvested the mature flowers when around half of the pistils became dark orange, and most of the trichomes displayed an opaque milky colour. We hung the entire plant to dry, dry-trimmed the buds, and cured them for several weeks.
Genetic Attributes of Amnesia Haze Automatic
Royal Queen Seeds breeders gave life to Amnesia Haze Automatic after crossing the legendary Amnesia with an autoflowering variety. After fine-tuning this mix over several generations, they quickly secured a stable and consistent phenotype consisting of 50% sativa genetics, 20% indica, and 30% ruderalis. The fusion of ruderalis and Amnesia made the strain easier to grow, faster to flower, and much more accessible to beginners.
Growing Characteristics of Amnesia Haze Automatic
Amnesia Haze Auto never exceeds a medium height, which makes her ideal for cultivators dealing with limited space, or those intentionally seeking a stealthy strain. Indoor plants grow to a height of 50–100cm and produce between 350–400g/m².
Plants grown outdoors in containers or garden beds grow to a slightly taller height of 100–120cm and produce anywhere between 130–180g/plant depending on space and sunlight exposure. Amnesia Haze Automatic explodes from a tiny seed into a canopy full of buds in as little as ten weeks. She offers a rapid turnover ideal for covert and larger-scale growers alike.
Effects and Flavour of Amnesia Haze Automatic
Amnesia Haze Auto packs a significant amount of THC for an autoflowering variety. A quantity of 18% ignites a well-rounded high that primarily energises the mind. After several hits, you’ll experience a light stimulation that inspires creative thoughts and a desire to get the day’s goals complete. A soft and soothing body high underpins this feeling of motivation, grounding the head high and preventing it from becoming too excitable. Every hit of smoke or vapour lights up the tongue with moreish hints of earthiness and citrus, courtesy of the terpenes terpinolene, caryophyllene, and myrcene.
Amnesia Haze Automatic produces a pleasant cerebral high and a succulent blend of fruity terpenes. Find out exactly how we grew her in this article.