I'm currently growing 16 granddaddy blueberry plants, 12 in a SOG and 4 which are being vegged for about 7 weeks. The 12 are in week 3 of flower and week 5 from transplant. They have extensive budding sights with a massive main cola and several smaller, but still decent sized, secondary colas. They have also already began producing a good deal of resin! This is an incredible strain, one of the most explosive and aggressive iv grown to date. From their start in flowering until they finished stretching, the plants have grown from 4 inches to 10-14 inches in height and began to show the first flowers in just over a week. Although I am still in the process of flowering and cannot say for sure, I believe this strain to be a short cycle flowerer and expect harvest to come around week 7-8. In the vegetative stage they grow fast and branch extensively making them ideal for LST, Supercropping and topping. The four plants being vegged for 7 weeks have grown past the sides of their 7.5 gallon buckets and 12 inches from the soil with insanely dense foliage and many large, sturdy colas. In the five weeks these four have been in veg, they are already as tall and wide as my cheese clones after 4-5 weeks of veg and 3 weeks of flowering! I can only imagine how large they will become once I start their flowering cycle. One issue I have had with these plants (if you can really call I an issue) is their sensitivity to nutrients at a younger age. At week two of veg they were still unable to handle even a quarter the recommended dose. This issue has become less of a problem, as they are now up to a full dose, however it has taken a full five weeks to become acclimated. As far as yield, I cannot give you an exact amount however I grew a purple dragon in a similar fashion to the 12 in SOG and it yielded just over 10 grams despite being a fourth the size of my granddaddy blueberrys. I'm expecting between 0.5oz-1.5oz a plant with two weeks of veg and being put in 1.5 gallon pots under a 600w HID system. If you're interested in seeing my grow up to this point check out my thread and feel free to ask questions! Hope this helped!
https://www.rollitup.org/indoor-growing/399806-600w-granddaddy-blueberry-sog-pics.html