Hey friend congratulations on getting into cannabis growing! I would love to offer you some advice if it was okay with you to help you out on your journey to learn to grow. So cannabis plants love heat and love humidity. It is the buds that hate it, I notice from the start your room temps are definitely on the colder side of things. We do not want our rooms too cold especially early on in veg when we have small root structures. We will get very stunted growth, Our plants need a nice warm humid environment to thrive in for the first 2 weeks to push through that phase of having a tiny root structure. We speed this phase up with foliar intake from the leafs with humidity in the environment. It will really help the plant get through its beginning phase much faster and with more vigorous growth.
When it comes to temperature, We want much warmer for veg. Like 79-84 MAX with lights on & no more than 9 degrees less with lights off. If we allow for anything bigger in terms of temperature swing we begin to stretch our plants. In veg & early flower tight temp gaps are very important in getting the growth we want from the plant. Once we get later down the road into flower with photoperiods by weeks 4 -6 they finish growing vertically and are now focused on bud production. Autoflowers you need to watch for it by eye, But once this happens we NOW want to open up our temp gaps to beyond more than 10 degrees less with lights off. At this stage instead of stretch, We will signal the plants to put more extra energy into the budding process and resin production. Timing this right and doing it well will result in a much better-finished product. As we get into flowering by weeks 2-3 we want to get our lights on temps down to 77-79 MAX. If we grow buds out at too high of temps they will be big but very airy and prone to foxtailing.
I see you did some awesome training on that plant great work. One word of advice though is I do know autoflowers have a harder time responding properly to these types of methods due to the fact of them pretty much flowering right away. This can be controlled somewhat but any heavy training or defoliating at the wrong time will really hurt your end result with autoflowers.
Generally we look at photoperiods as plants that have an unlimited amount of veg time. We decide when they flower, So combined with the fact that cannabis plants are extremely hardy we can recover them and get them ready regardless of what mistakes we have made before we kick them into flower. Once you are into flower every day counts and mistakes cost you in the end, Autoflowers are like this from the word go you are on the clock with them. They maybe easier in terms of not needing to change your light cycle but they still have their drawbacks as well.
One other quick thing. When we water our plants in veg, We want to do a big full water and then let it dry right out. This helps promote the roots to search for water stretching out and growing bigger. The #1 motto for all growers, MORE ROOT = MORE FRUIT. Once we get to around week 3 of flower we do not want them going dry AS much. Cannabis plants need 3 gallons of water per day to produce 1 pound of dry cannabis. That is a big plant, But it gives you an idea. So once those buds are forming we want them to have all the feed and water to make it happen. Remember cannabis plants are almost over 80% pure water weight when we pull them down. In veg & early flower we would water the beds when our bluelab pulse read around 20% moisture content on most of the beds. In flower we did not let that number dip bellow 45% .
Get yourself a PAR meter & a thermal laser temp gun like the fluke 62 MAX to better read your plants and grow to their needs. Also check out VPD, Vapor pressure deficit and how it relates to growing cannabis, All new growers should get comfortable with following a VPD chart. If you need any help feel free to ask friend, I am always around to help people. Check out my 200 light 7,000 plant diary and follow my profile! I Am currently producing a youtube tutorial series for my channel so if that interests you hop over and subscribe, It is linked off my growdiaries profile. Happy growing!
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