Well folks the final moment is here!! The buds passed the "stem snap" test in terms of dryness so I removed the buds from each cola and weighed them separately. In order to reach my yield goal of 32oz each cola needed to weigh half an oz on average (14g). So what I did is recorded the weight for the buds from each cola on a spreadsheet to keep track of each plants yield as well as overall.
Here is a screenshot of the spreadsheet:
My grow prediction/goal was for each plant to produce 8oz, and since Queen Sativa made up for Derpy's slack, I was able to hit the goal and even a bit more. Now just imagine if those other colas had survived too, that would easily be another few oz!
Here are some pictures of the weighing process I used, I just put all of the buds from each cola onto the scale after cutting them off the stem and recorded the number in grams.
Now, I simply did not want to deal with having 30+ mason jars to "burp" during the cure, so I purchased some 1.5 gallon jars to use instead. Derpy, Frosty, and Purple each fit nicely into 1 jar each, but Queen Sativa produced more buds, and they were less dense, so she filled up almost 2 jars.
Here is a close up of Frosty's jar with a pen for scale
Anddddd the money shot, with a mason jar for scale.
So yeah, I am pleased with these results, but I was shocked by the level of variation between cola sizes. The biggest factor seemed to be the size of the "top bud", several colas had tops that weighed 10 grams alone. Stem thickness was the primary correlation I saw, the thicker the stem the bigger the buds.
Ok so now that I have a dry yield, let's talk about cost efficiency!
Total materials cost for this grow: ~$1,100.00 for everything including tent, nutes, seeds, other equipment and sensors...etc.
Electricity cost (note that I am using 1,000W as the constant value for light, at the start of the grow I had the light dimmed to half power but later on I had the extra small lights in the tent so I am using 1,000 as the "average" throughout the grow)
Total electricity cost during veg: (50 days)X (18 hrs) X (1,000W) @ (0.085c/kwh)= $76.50
Total electricity cost during flowering: (68 days)X (11.5 hrs)X (1,000W) @ (0.085c/kwh)= $66.47
I believe that grams/watt alone is not a useful metric because it does not take grow time into account. Some people veg their plants indoors for 3-4 months and achieve a high g/watt but they have to use a LOT more electricity to do so. However, this grow still achieved pretty darn close to 1g/watt so I am satisfied by either metric of evaluation
Total cost for materials + electricity: ~$1,250.00.
Total yield: ~34 oz of bud that would cost me between 7-9k total at a store (avg for Blue Dream in my area is $270-320/oz).
I will post a smoke report in a few days after the buds have had some time in their jars to cure, but what I have seen and smelled so far is extremely promising (rich, sweet blueberry and some citrus odors developing and super sticky dense buds).
Thanks again everyone for following along (and reading my rambling walls of text
) Next grow is going to be 4 Girl Scout Cookie autos in a RDWC system in the same tent, this time my goal is 2 lbs in 70 days! I am confident that I can improve significantly for next grow and hopefully inspire others to push limits and engage in science, all in the name of this amazing plant!
~TheFrizz