Most autoflowers start flowering in the third or fourth week, so start training only if the plants grow fast and remain healthy enough to be trained. If you’re unsure, it’s okay to not train the plants at all.
As a grower, your job is to ensure that all the buds receive equal light, and that’s where LST helps a great deal. Most growers begin LST after the plants are “Topped”. Topping is another technique that involves cutting off the tip of the main stem, forcing the plant to grow more colas rather than one. Beginners can even “FIM” their plants, which is another method where you cut off only a part of the tip instead of cutting it entirely.
It goes without saying that seedlings don’t require nutrients. If you’re going soilless, a mild nutrient solution is fine, but don’t go above 150–200 ppm to avoid burning them.
How does the pH dictate the yields, you ask? Well, when the pH falls below 5.5, plants cannot absorb certain nutrients like Calcium and Magnesium even if they are present at the roots. The same logic applies when the pH rises above 7. Suffice it to say that all the nutrients in the world cannot help the plant recover if the pH is not right. With an imbalance in the pH, the nutrients cannot be absorbed and the plants produce very little yields. Therefore, check the pH constantly to ensure that the plants are healthy.
In particular, full-spectrum LEDs work the best for any type of autoflower. The higher the lumens, the better the yields, but if you cannot afford expensive lighting equipment, CFLs will work well during the vegetative phase.
It’s also critical to transplant only after the roots have filled out in the container since the soil will drop off in clumps with the roots stuck to them. In other words, wait until the plant is a little root bound. Since there are so many conditions, it’s best to start directly in the final containers. With no disturbance, you’re all set to get great yields.
6) Light cycle
You can also grow your cannabis in organic soil. This will ensure your plants have everything they need for healthy growth all the way to harvest, and you won’t ever need to administer additional nutrients! Some growers make their own organic super soils, which are perfect for growing autoflowers. That being said, it’s important the soil is not too “hot” given the sensitivity of these cultivars.
Make sure to provide your autoflowering ladies with good airflow. A gentle breeze of fresh air from a ventilator ensures humidity levels in your grow room stay low, which helps prevent the growth of mould. If your plants have dried leaves, which is not uncommon in the later stage of flowering, remove them for some better airflow around the buds.
“Flushing” is when you stop feeding nutrients, and only administer pH-adjusted water in the last 1–2 weeks before harvest. This gets rid of the remaining mineral salts that have accumulated. Without any nutrients remaining in the soil, the plant will draw stored nutrients from its foliage; this is why cannabis in late flowering turns yellow. The goal of flushing is to make for purer and better-tasting buds, as you don’t want to smoke whatever chemicals you’ve fed your plants. So flush them out before you harvest.
TIP 11: ENSURE GOOD AIRFLOW, HUMIDITY, AND TEMPERATURE
After your cannabis plants have sprouted, don’t feed them for at least two weeks. Even then, you may only want to give nutrients if a plant shows signs of a deficit, like yellow leaves. Autoflowers grown in standard potting mixes should do well all the way to flowering with no additional nutrients. From here, you can start to administer bloom-specific solutions.
Autoflowering cannabis prefers light and airy soil that contains lower levels of nutrients than soil for photoperiod strains. As most ready-made universal potting mixes may contain too much nitrogen or other nutrients, choose only a lightly fertilised potting mix for your autoflowers. Your autoflowers also want soil that is not too compact, as this may otherwise prevent the roots from accessing adequate amounts of air.
Don’t top, prune, or pinch your autoflowers like you might do when growing conventional cannabis. With autoflowers, the only training method you should use is low-stress training (LST), where you carefully bend and tie down your plants so all bud sites are equally exposed to light. When performing LST on autoflowers, just stick with bending and skip the part where you’d top your plants. If you plan to do LST with your autoflowers as an alternative to a SOG, ensure that you start soon, but be gentle to avoid breaking your plants.
Because of this unique trait, outdoor growers can achieve multiple harvests during a single growing season. By germinating seeds week after week in early spring, you can theoretically rake in your first harvest after
Follow the fail-safe week-by-week grow guide below for a quick and easy route to harvest time. We cover all of the parameters and variables you need to consider—at the correct times—to ensure your plants remain healthy, vigorous, and productive.
Autoflowering cannabis plants are hardy, fast, and easy to cultivate in confined spaces. What’s not to love? Learn how to grow them week by week below.
A NOTE ON PH
However, their yields aren’t as spectacular as those obtained from photoperiod giants, but, the trade-off for brevity makes the decision worthwhile for most growers.
You can make your own potting mix using the following formula:
Next, poke a 10–15mm hole into a pot with your soil mix. Sow your seed directly into its final pot to avoid the stress of repotting later down the line. Transplanting causes plants to go into shock, and autoflowers grow so fast that they’ll struggle to recover. Place a seed in the hole and cover lightly with soil. You’ll see your seedling emerge in the next few days.