1.) Overwatering:
Too much water can kill cannabis plants. Watering should only be done when the top layer (about 5cm) of soil is dry. With hydroponic systems it is much more difficult, or rather impossible, to overwater because the rockwool has such excellent drainage properties. Rockwool blocks must not stand in water, which should not be the case with hydroponic systems either. Waterlogging must be avoided at all costs, as cannabis plants do not like this at all.
2.) Talking too much about it:
People love to feel important and talk about their plants. This always leads to problems, even if there is an appropriate exemption for cultivation, it is better to keep the grow to yourself.
3.) Too little patience
You should already be patient when germinating. It can take up to 10 days for a seed to sprout properly. If possible, do not touch the germinating seed, as it is very sensitive to pathogens and fungal spores and can be killed by them.
4.) Poor genetics/seeds from street weed:
The yield and quality of the end product is largely determined by the genetics. It is therefore essential to use fresh and high quality seeds from reputable seed banks if you do not want to experience disappointment.
5.) Overfertilisation:
When growing on soil, fertilise only every 2nd time. Thoroughly rinse the pots every 2-3 weeks with plenty of clear water, so that it pours out of the planting holes again at the bottom and enriched (mineral) salts are flushed out of the soil. Drain the water well so that the plant is not standing in water under any circumstances!
6. ) Underfertilisation:
Occurs less often, but can happen, e.g. if organic fertiliser is used, but there are not enough microorganisms in the soil to convert the nutrients and make them available to the plants. Organic fertiliser only works and can only be utilised by the plant if there are enough microorganisms in the soil.
7.) Starting too early with the outdoor grow
Plants that are planted out early in the spring often grow very large, but they take significantly longer to start flowering. As the days get longer and longer until 21 June, the plant that was put out too early does not realise that it is now time to flower. It takes until mid-August and then finally realises that it should be flowering. It produces its buds only in August and September or even later. The result is huge trees with small buds. This is because the sunlight is not as strong in September. The climate is humid, it gets colder and cloudier just when the buds are supposed to ripen and need especially much light. If the plant is put out later, it finds that the days don't get longer at all. It starts to flower earlier, develops better and gets bigger flowers that have the opportunity to ripen than a plant that was brought out in April. It is best to bring the plants outside on 1 June.
Indoor, experienced growers send their plants into flower when they are about 30cm tall. At this size, the plants receive optimal light at all points, which has an effect on the yield.
8.) Starting too late with the Outdor-Grow:
The plants need some time for the growing phase before the days become shorter and flowering starts. Too late a start of outdoor growing in summer leads to small and weak plants with less yield.
9.) Poor environmental conditions:
Among other things, the plants need good air and air circulation, also at night, as well as sufficient light. In the indoor area, the entire air of the grow room should be completely replaced every 5-10 minutes.
10.) Mistakes during harvesting:
Harvesting too early is detrimental to quality and yield. Especially in the last period of the flowering phase, the plant really gets going, produces a lot of resin and the flowers pump out.
Harvesting too late increases the risk of mould in the buds. After a certain point of maturity, the canabinoids degrade again, i.e. the quality can only get worse. Close control and observation of the buds and trichomes with a microscope helps to catch the right harvest time.
