First of all, we must start with the basics and point out what the acronym LED means since they are used a lot but few know its real meaning. Led stands for Light Emitting Diode, a diode being a semiconductor that emits light and does not lose energy when producing said light, thus making the most of its power. Some important characteristics of LEDs are their advantages, such as the fact that they light up very quickly in relation to other high-power lamps such as sodium vapor, metal halide, LEC and other systems with incandescent technology.
We continue saying that another advantage of LED lamps for growing marijuana over others is that you can choose the range of spectra. In this way, there are LEDs with a fixed spectrum, which are only used for one stage of the life cycle of marijuana. But there are also LEDs that cover the wide spectrum of lights that cannabis needs. Being able to create the ideal light spectrum, where lights can be selected both for the vegetative stage and for flowering, is one of the premises of many expert and consistent growers, which has encouraged many professional growers to switch to LEDs to make a responsible use of the electricity they consume and grow big.
Distance from light and cannabis plants
At this point, we must point out that the distance will depend on the power of each LED and also on the phase in which the weed plant is in the crop. However, in a generic way, we can say that some of the most relevant data are the following.
Growing: In this period of cultivation, the plants should be at a distance of 45-60 cm from the tip of the plant. This distance is essential, since the plant, despite needing light to grow, requires a space to prevent it from being burned or stressed, both symptoms would affect the growth of the weed plant.
Pre-flowering: At this time of cultivation, the plant requires extra energy as it begins to flower, that is, to produce the long-awaited buds. So, we are going to lower the light to a distance of 45cm, the objective is that the light spectrum penetrates better so that the plant can produce pistils explosively, and thus the flowering starts in its entirety in a perfect way.
Flowering: It is already flowering, so here we lower the light again and bring it a little closer to the plant, at a distance of 30-40 cm. This is because, at this point more than ever, the cannabis plant needs light to penetrate the buds, which are taking shape, so the light spectrum cannot be wasted in the growing area.
Use Led Full Spectrum
They are white LEDs, they are the ones that allow us to better visualize the plants. This type of LED is developed to obtain the greatest light potential. They are called Full Spectrum lights because they cover the full spectrum of light. They usually have a much higher CRI.
This type of LED differs from fixed spectrum LEDs because these are LED equipment intended for one of the phases, whether it is growth or flowering. There are also teams where you can change the spectrum depending on the stage you are in. Blue LEDs are suitable for the vegetative development of plants. Although there are teams that perform a combination of red and blue for the entire cycle. Those yellow and red colors stimulate the phases of pre-flowering and flowering. They help the development and fattening of marijuana flowers.
Basic configuration of a good LED
Before buying any LED panel, it is very necessary to be informed, so as not to waste money. Attention in the temperature of the colors that are understood between 3500k and 6500k. Another very important factor is the light efficiency (lm/w) as well as the color rendering index (ICR/CRI).
Use cultivation techniques to HIGH yield
Due to the fact that one of the main weaknesses of the LEDs is the light depth (penetration capacity of the light in the plants), the cultivation techniques of vertical development such as supercropping or SCROG, favor a better development of the plants. tips of the plants, if we carry out these techniques, for an increase in the harvest it is necessary to prune low to favor the maturation of the tips of the plants.
Another very suitable practice for LED cultivation is SOG, by placing many plants in a small space and of a reduced size, if necessary, a lower pruning would also be carried out, the LED light is capable of deepening to the lower area of the plant and being able to harvest large, hard and compact buds.
Reduces watering of plants
There is a relationship between temperature and plant development, the hotter it is, the faster they grow. So we can say that temperature acts as a metabolic regulator. As the temperature increases, the metabolic processes in plants also increase, this means that the plant will have greater water, food, carbon dioxide (CO2) and oxygen needs. For this reason, in crops with LEDs, as they have lower temperatures, the frequencies of irrigation and fertilization decrease considerably. If we grow in winter with LEDs, the use of a thermal blanket would not help to give the roots an adequate temperature.
Calcium and Magnesium
Depending on the type of LED we use, it is likely that we need to add extra Calcium and Magnesium to the plants in the nutrient solutions or directly to the substrate in solid format. The above, since due to previous crops a lack of these elements was analyzed, when it is grown with certain LED lighting systems, then to avoid having sick plants it is better to prevent, adding that dose of extra nutrition.
There must be a balance between the ambient temperature in the grow room and also in the area of the plant’s leaves, since, as we have said, if there is a very high temperature, the plants become stressed and the crop is completely damaged. However, with LEDs there is no such risk, on the contrary, the temperatures in the environment of the crop are usually lower, and even in the area of the leaves of the plant, because the lighting systems do not produce as much heat as It happens with other types of lighting. But, if the temperature at the level of the leaves of the plant drops too much, it can cause condensation, an issue that can cause the appearance of pathogenic fungi that damage the crop.
For professional growers, the following advice goes, since many times you try to maintain control over the crop, lowering the costs of inputs such as humidity and temperature meters or tools for CO2 production. Despite that, experts recommend that the best thing for professional or commercial growers, and especially when growing with LED lighting, is to use an integrated system that controls everything in one.
You also have to take into account that by not generating so much heat, so much extraction is not necessary and we can reduce it (we only need to renew the air), a good option is to install a CO2 supply system (with the advantages provided by the extra CO2) to reduce the extraction to the maximum (you only need a minimal renewal every so often) and thus keep the room a little warmer.
It is always good to take into account the relationship of the power of the lights with respect to the number of plants that you want to grow because this way you can maximize the yields and optimize the performance of the LED lights that are counted. For this reason, here we are going to leave you a reference of the ideal power that your LED lighting system should have for the number of plants you want to grow, with which you will obtain the maximum performance of the plants in the garden.
For example, for a crop of 10 plants, the ideal is to use LED lighting with a power of 461w, which is equivalent to a power of 1000w in the case of HPS bulbs. Now, if you want to grow a smaller crop of 6 plants, you are going to require LED lighting of about 276w, that is, about 600w of HPS bulbs. Otherwise, if you only have a micro crop with 2 weed plants, you will need about 92w from your LED lighting system, that is, which is equivalent to about 200w of power from the HPS bulbs.
We want to advise you accordingly for the same reason, here we are going to share with you a selection of the best varieties to grow with LED lights, which we have put together according to the references of gardeners and experts who are part of our team. Remember, that if you apply the cultivation techniques that we recommend, and follow our advice, you will have more possibilities of achieving success in your cultivation. Let’s go.
This cross is a jewel for the world of cannabis because Girl Scout Cookies x Jack Herer comes from a cross between two legendary varieties which generate powerful buds, with energizing effects that activate your creativity and promote happiness, to end with a good relaxation, super social. The buds have THC levels ranging from 22%-26% that are ready to be harvested after 8-10 weeks of flowering.
If you grow Girl Scout Cookies x Jack Herer outdoor or in a greenhouse, you will get great yields of 600-700 gr/plant, while indoor you will get 400-500 gr/m2 of buds with citrus flavors, earthy and also herbal notes. . It is recommended to grow this variety with LST-type techniques, and indoors in SOG format, since it helps the light from the LED lighting to penetrate the plants better and thus the buds develop better.
This sativa variety, which is a cross between Lyly Sour x Blue OG, responds very well in crops with LED lighting, because it has Blue OG as its parent, a highly recommended genetic for indoor cultivation with LED lighting system. Now, if we talk about Lyly Sour x Blue OG we can say that it produces buds with a power of 15%-17% THC, with delicious flavors that mix fruity and sweet flavors with notes of diesel, gas and soft earthy touches.
When we refer to flowering we must say that it is large because you can collect between 400-500 gr/m2 of buds if you grow indoors, the same amount for outdoor or greenhouse gardeners. The flowering is ready after 8-10 weeks where you can taste those incredible buds that cause euphoric effects at the beginning of the head, and then finish with a bearable relaxation, full of an incredible lazy laugh.
New York Diesel Auto is perfect to be cultivated with LED lights, since it is a mostly sativa hybrid genetics, which has a cultivation cycle of 8-9 weeks, that is, 60 to 70 days. During these cultivation periods, the plant can be applied with cultivation techniques such as LST and can be grown in SOG in 6-7 liter pots, producing compact and fast plants.
So, indoor growers can harvest between 450-500 gr/m2 if they grow with LED lighting you will be able to get those grams of weed when you do it at its maximum capacity. From the other side, outdoor growers can harvest 55-160 gr/plant with buds which exude fruity and citrus flavors, which concentrate a potency of 12%-14% THC.
Watermelon zkittlez Fast Version
Watermelon Zkittlez Fast Version, This exquisite sativa variety that has THC levels that are between 21%-26%, without a doubt, should not be missing from the recommendations since its buds are delicious, with sweet melon flavors and fruity notes. In addition, it is easy to grow maintaining a large size outdoors, for the same reason for indoor cultivation with LED lighting, we recommend using SCROG with which you can obtain uniform colas which will explode full of buds if you make the light penetrate each one of their places.
Also, it can use cultivation techniques such as SOG indoor with which you will harvest about 500 gr/m2 of buds, and outdoor you can harvest 600-700 gr/plant after about 60 days of flowering, although it is always good to give it 1 o 2 extra weeks of flowering to ensure we have mature and resin-rich buds. The high is powerful and euphoric, before becoming social, fun, and with a smooth relaxing descent.
Remember that Blimburnseeds.com has an extensive catalog with high THC strains that exceed 30% and seeds perfect for indoor and outdoor growing. Many of our genetics have been grown in large greenhouses under artificial light to obtain the best selection of feminized, regular, fast version, autoflowering, cbd and cbg seeds of high quality. In addition, our germination rate exceeds 90% germination. When our customers, breeders and growers have any doubts with their crop, we help them at all times with our ticker system so that beautiful marijuana plants provide them with resinous buds full of happiness.