How to make it grow fast?

Hey I see you're doing an outdoor grow, are the plants getting at least5hrs of direct strong warm sun? If you could supplement with cfl bulb or the like to jump the plant to 18hrs that would be best. Also once they get a little bigger not just stretching up, transplant into a bigger pot, that should help too and then of coarse a nice nutrient schedule. Happy growing

Hi there! Well I see 4 problems in here : 1 = lack of light. Having a plant nearby the window generally brings this kind of stretching / weird vertical growing. 2 = lack of nutrients. At this stage, a root booster could really help, the first weeks of your autos are the most important ones, you want to develop the biggest root system as possible so she can have a fully healthy and optimal growth. 3 = pot size. As mentioned previously, she's trying to make as many roots as possible, but if for some reason the roots get to touch the border of your pot/container, you'll have some root bound, and that's really bad especially on autos (because of their short lifetime transplanting/repotting is not an option). 4 = PH. You don't mention your water PH level. Are you sure your PH is correct ? Between 6.0 and 6.5 ? Next time I recommend you put them directly into their final container, with a custom coco/soil mix (I do 60% soil 40% coco). This way, they will get just the small amount of nutrients needed the first weeks and they'll have plenty of healthy roots, resulting in a successful growth. I'll be around, good luck with these babies!

everything depends on the environmental factors. ground, light, air, nutrition, ... First and foremost I think that growing up to a window is far from ideal. As you can see, your plant is already stretched a little, which is not ideal. Custom lighting and sufficient air circulation are a must. This way you prevent your plant from stretching and growing well. Genetics is also a factor that binds. Some species grow faster than other species. For example, autoflowers will grow a lot faster than 'ordinary' plants. Go easy on the nutes the first weeks, everything is present in your soil for the coming weeks. good luck with the grow!

The growth is slow for 2 reasons mainly. Lack of light, see how much the stem has stretched looking for light? Try putting it under direct sunlight. The second reason is temperatures, when the temperatures are below 23°C (73°F) the growth is really slow, if you can keep it at say 24°C to 27°C (75°F to 80°F) you will see much faster growth. No need for nutrients yet, you will probably burn the seedling if you try feeding anything. You also don't mention night time temperatures, I assume they are even lower, that also affects the growth rate.