When should I transplant my plant in to the main g...

Essentially auto's dont like being transplanted so the early you can do it the better , what I recommend with auto's is buying the little jiffy pots that break up in the soil this way when your transplanting your auto you dont have to remove her or disrupt the dirt you can just take the jiffy cup and place it in the soil and its good to go , the cup will break down giving your plants some decomposed plant matter to feed on as well as the roots will just punch through it when they are ready to expand and your plant will never see the stresses of being transplanted and just continue to explode in growth . Here is a link to the style of cup im refering too https://www.google.com/search?q=jiffy+cup&source=lnms&tbm=isch&sa=X&ved=0ahUKEwinqojxpPDgAhVLLKwKHanTC7IQ_AUIECgD&biw=1460&bih=720#imgrc=ypQpmYJDfqAe7M: These cups are great for autos . I hope this information helps you understand when you should transplant an auto as well as the importance of trying to make that transplant as smooth as possible to eliminate stresses and stunts in growth . -Happy Growing!

As soon as the roots can hold together the soil in that cup. Do you have any root poking out of a drainage hole? If so its ready. But also based on the size of the plant, it looks like it has enough roots established. Like everyone mentioned the sooner you can get a seedling into the final pot, probably the better.✌️

With an auto I would get her into her final pot as soon a you can. reason being is if you let her go just a little too long and she start to get even a tiny bit root-bound it will stress and slow down if not stunt growth, in extreme cases. And where it's an auto-flower plant you don't really have the time or luxury of being able to just veg her longer until she bounces back so like said before it's best to try and start auto's in their final pot from the start. Sure it can be done with a smaller and then transplanted but its pretty risky with auto's. Keep up the great work Happy Growing👍

Liquid Alpaca, My shortcut answer: asap Ok and here we go with the longer Answer. As you growing a Automatic Plant, its the best to give her into her Final pot , directly after Germiating. The Pot should have min. 11l and best is filled with a fluffy prefertilised Soilmix ( biobizz/ Plagron). Because as soon as the Taproot hits the ground of the bottom, She may stop to grow, and stay small. In worst case she starts to flower. OK have a nice time and feel free to ask if you have problems... greetings and Happy Growing