Is this Blackberry auto flowering already?

Hi Growmie, So this one has definitely been in flowering for longer, I would estimate 14-21 days plus at least another 7-14 days of veg phase. If you count the internodes and look at the branches, I would say the plant is more like 35-42 days old since germination. It looks like overwatering and a calmag deficiency. I've had automatics after 21 days with 40-50cm height and thick stem diameter, but never so densely branched and already set buds. You can't determine the age exactly, but based on the internodes, you can roughly estimate it pretty well. A plant with 8 or 9 internodes, like I can count on yours, is said to be between 4-5 weeks old. Some strains react sensitively to stress and deficiencies, which is why the first 3 weeks are crucial!!! 21 days of optimal conditions after germination is a safe way to get big tall plants instead of autoflower dwarfs that can't reach 60cm. The right VPD is the key to this, and DLI/ppfd is the lock where it ultimately results in up to 40% more growth with the same or lower nutrient amount. Lastly, depending on the strain from the Mystery Box, Champion Line strains are early F1 releases and still in the internal testing phase where you can buy the seeds cheaper. Once the Champion Line genetics are stabilized, they will definitely cost €16 per seed instead of €13.

Been in flower for a while.. . probably only 1-2 weeks of vege growth remaining. Think the stress made it go into flower almost immediately. coco is inert. depriving it of nutrients probably slowed it down.. .looks hungry AF in the picture, still. You are treating it like soil and that's not how you grow in a soilless medium. Fertigate every time. Always get 10% runoff. the runoff prevents buildup. Any reaction to leaf symptoms is fixed through a formula adjustment. Less moving parts to consider. Easy peasy. 1) fully saturate with 10% runoff or more - this is waste water.. it's fine for an outdoor plant in the earth but not potted plants. 2) wait for appropriate dryback and repeat. As long as you allow 'enough' dryback, it is impossible to overwater. Should have 33% perlite or similar by volume. the pre-mixed 70/30 stuff is close enough. Even if you give a half charge to a seedling, you want to start providing a full balanced diet early on. It will not hurt a seedling. Soilless does not require high concentrations. Fertilizer only - 600-750ppm is all you need. hard water will add to that, but it can mostly be ignored unless it impacts how much Ca you need to include.

That is 100% flowering. It does look a little stressed, maybe too much water?