Some growers also flush during the pre-flowering stage, when the plants are transitioning from the vegetative into the flowering stage so they can start feeding from zero, as said above, this won’t hurt your plants but should be done properly.
Most autoflowers reach a height of around 50-100cm but a plant’s size depends on the genetics and growing conditions. Also, all strains are different so you will find Sativa and Indica-leaning autos; Most Indica hybrid autoflowers will stay around the 80-120cm mark but Sativa-dominant autoflowers can reach up to 175cm tall.
8. Overfeeding and underfeeding
So, if it’s your first time, stick to commercial nutrients. And, the topic on nutrients is incomplete if you don’t talk about pH. Depending on the medium 2 you choose to grow, the pH must be regulated accordingly. Cannabis plants love acidic soil, so the pH must be maintained between 5.5 to 7 in both soil and hydroponic setups.
Autoflowers (aka self flowering seeds) are suited for beginner growers but it’s crucial you know the basics if you want to have a successful harvest the first time you grow cannabis, although you can learn as you go, it can be disappointing if you waste time and money, and end up with nothing to smoke.
1. Knowing the basics
Bigger plants can tolerate much higher temperatures but tender seedlings will succumb to extreme temperatures. Remember to avoid rainy seasons since the plant doesn’t receive too much light. Of course, the timing doesn’t matter if growing indoors, so sow those seeds whenever you wish!
For example, cannabis needs more nitrogen in the vegetative stage. In the pre-flowering stage, nutrients with more phosphorous are preferred, and in the flowering stage needs a lot more potassium than nitrogen or phosphorous.
Pour the soil into pots and poke 15-millimeter holes in the soil. Plant a seed in each hole, cover with soil, and watch for a seedling to emerge in the next several days.
Now that you know the basics of autoflowers, let’s explore each step in the growing process. The following guide covers a typical 10-week growth cycle and highlights milestones for each week.
The timing of autoflowering plants depends on their size and classification. On one end of the spectrum, there are dwarf varieties, which are short in stature and are often ready to harvest within 10 weeks. In contrast, there are super autos, which grow taller (more than 6 feet high in some cases) and may not mature for more than 100 days. But in all cases, the time frame for growing autoflowering cannabis is shorter than for photoperiod strains and represents one of the seeds’ most desirable distinctions.
During the flowering stage, sticky, resinous buds will make their first appearance during week five. Photo by: Gina Coleman/Weedmaps
How to grow autoflowering plants
The plants should be at least a foot tall now.