As an autoflowering strain, Amnesia Express grows into a diminutive marijuana plant that measures only 100 to 120 cm (39 to 47 inches). Because of that small size, it can fit into any available space like a closet or balcony without any problem. The plant’s lifespan is merely 10 weeks from seed germination to maturity; therefore, it does not have as much time as its photoperiod Sativa cousins to grow to a towering height.
Another consequence of that brief life cycle is that it does not adapt well to extensive training techniques. They could stunt its growth and result in a negative impact on the final yield. The best thing to do would be to let it develop on its own – good news for novice gardeners since they do not have to think about complicated maintenance procedures.
If you have a dedicated space where you can grow this strain indoors, it is highly recommended that you rear several plants simultaneously to boost productivity. About 7 to 9 plants can be crammed into a one square meter area, but take care not to overcrowd them. Each one needs sufficient room to spread out, and besides, dense foliage could trap moisture and invite mold or mildew. Keep a close eye on the temperature and the relative humidity (RH) level; 21 to 28 degrees Celsius (70 to 82 degrees Fahrenheit) and an RH of 40 to 50% are ideal.
With proper feeding, one square meter can yield 450 to 550 grams (16 to 19 ounces) of delicious, sticky nugs. Since the plants have an internal clock that tells them when it is time to start budding (usually after 3 weeks of vegetation), you do not have to change the grow lights’ schedule. Simply keep the lamps on for 18 to 20 consecutive hours a day from the seedling stage until harvest time.
You may also raise this strain outdoors since it loves basking in natural sunlight. One plant can yield up to 200 grams (7 ounces) of usable bud, which may not sound like much but is actually quite generous compared to other autoflowers. Anyway, it is easy to increase the output by having a “perpetual harvest” type of operation. Simply germinate new seeds so that you can sow them as soon as you finish harvesting the old plants. That way, you will never run out of weed.