Amnesia Mac Ganja has a flowering time that is actually quite fast, compared to most Sativa hybrids. Still, some impatient growers feel that 9 to 11 weeks is too long. The buds are definitely worth the wait, though, and the more time they spend ripening on the plant, the more potent they will be.
The large, fluffy nugs start out dotted with pale yellow pistils, but it is better to wait until the hairs darken to a faded brown before harvesting. Another sign that it is the right time to collect the buds is when more than 50% of the sparkly, crystalline trichomes coating them become opaque and frosty white. The plant itself is also covered with that shimmering resin. As it enters the blooming stage, even the long, slender fan leaves will be sticky to the touch.
Aside from the narrow shape of the leaves and the loose texture of the buds, this plant exhibits the typical Sativa structure. It grows tall and thin, with the branches widely spaced. The foliage is too sparse to be called bushy, but the advantage of that is a strong resistance to mold and mildew. There is no dense leafage to accumulate excess moisture, so it does not need to be pruned often.
However, the height could be a bit problematic. When grown outdoors, this strain can stretch up to 200 cm tall (6.5 feet). It can be challenging to be discreet unless the garden has a high fence. Moreover, it is sensitive to cold temperatures, so it is best to place it in a warm, balmy area with plenty of sun exposure. An awning would be useful in case of sudden heavy rainfall. You should also be aware that the smell can attract pests and bugs, but a splash of neem oil or insecticidal soap should take care of that in a jiffy. If all goes well, each plant will generate up to 600 grams (21 ounces) of delectable nugs.
For indoor cultivation, expect AMGHaze to expand upward to a maximum of 120 cm (4feet). It is crucial that the grow lamp be kept a safe distance from the plant’s apex to prevent leaf burn. Some bulbs, like high-pressure sodium (HPS) and metal halide (MH), generate a lot of heat. They can easily scorch human skin, so delicate leaves and blossoms are surely vulnerable, too. Additionally, they can raise the ambient temperature within the grow room or tent. Make sure that that the temperature is maintained in the 21 to 28-degree Celsius range (70 to 82 degrees Fahrenheit) for optimum growth. Meanwhile, you should also keep an eye on the RH (relative humidity) level so that it does not exceed 40 to 50%.
But if your grow area has a low ceiling, there are ways to limit the plant’s height, and at the same time, boost the yield. The most straightforward is the Sea of Green (SoG) method, which even gardeners without any previous experience can do. All it entails is raising multiple plants simultaneously under strong light; no more than 9 per square meter is advisable. This strategy maximizes the use of the available space, reduces electricity and water costs, and cuts short the vegetative phase. The result is smaller plants that can be harvested sooner.
Another technique you can employ is the Screen of Green (ScroG) paired with low-stress training (LST). It requires a net or screen, preferably made of hemp string, to be placed over the plant. The branches are bent and secured through the screen’s holes to encourage horizontal growth, resulting in a flat, tabletop-like shape. Not only will that control the plant’s size, but it will also introduce all the bud sites to the grow light, ensuring their proper development.
Using either SoG or ScroG produces a generous yield of 450 to 500 grams (16 to 21 ounces) per square meter.