24HR LIGHT CYCLE. Some growers will even give their autos a full 24 hours of light, arguing that this helps maximise vegetative growth. Growers who stick to 18-hour light cycles, on the other hand, argue that this gives their plants a short “recovery” period that is essential for healthy growth. The optimal temperature range for growth is between 68-78°F (20-26°C). A temperature above 80°F (27°C) can cause stress to the plant and negatively impact growth. Similarly, humidity levels play a key role in the health and development of autoflowers. During the vegetative stage, the ideal humidity range is between 40-60%. Best Watering methods (watering guide): 1) Watering when the soil surface is dry by pouring water till there is a little runoff water at the bottom of the pot. This method needs you to touch the growing medium and can get a little messy so avoid this if you need to do anything else in your garden. 2) Watering by the weight of the pot. At the vegetative stage, cannabis needs a lot of Nitrogen (N) and a decent amount of phosphorus (P) and potassium (K). The best fertilizer for autoflowering plants at this growth stage is the one that has an N-P-K ratio of 10-5-5 or 20-10-10. No matter what the percentage is, just make sure that Nitrogen (N) is available more than those other Most growers agree that the optimum amount of light to give autoflowering strains is somewhere Tip 5: Use the Right Type of Light. With autoflowers, you don’t need to worry about light schedules like you would with photoperiod plants. When growing autoflowers, you can just leave your lights on a 18/6 schedule (18h on, 6h off) for the entire grow, and can even grow them under 24 hours of light. Which schedule is “better” is open to This planned low stress training can be done all the way from the plants start to the last weeks of flowering and also can be done at the time when the autoflower plant is growing fastest at the first weeks of flowering period. The first stage when you can LST is at the very start of your plants life cycle when the first or second true leaves Depending on how they are grown, autoflowers generally reach flowering without the addition of external nutrients. 5 Reasons To Grow Autoflowers: Quick cycles (usually under 11 weeks from seed) They require less nutrients; Strong, compact plants; They do not rely on light schedules to know when to flower; High mold and pest resistance; Easy for vkqlE.