Yellow leaves are a warning sign and a cry for help from the cannabis plant. Unfortunately, many nutrient deficiencies, over-fertilisation, and heat stress can cause leaves to yellow and wither. It’s so important to closely monitor your cannabis crop, be it indoors or outdoors. If you have been paying attention, you can take corrective action with more confidence diagnosing.
Fan leaves have very low cannabinoid content and are best added to the compost heap for next season’s super soil mix. Sugar leaves, or the resinous trim leaf that a grower accumulates during the harvest process, is excellent raw material for homemade cannabis concentrates.
You don’t need to be a shaman or a tree-hugger to communicate with your cannabis plants. You just need to be informed. The leaves on your cannabis plants can send you an SOS, but you must have the knowledge to decode it and take appropriate measures to fix the problem.
Every cannabis cultivator needs to be able to interpret the signals weed leaves send. The grower that can read cannabis leaves correctly will crop healthy plants with fantastic buds. Here is your go-to overview of the weed leaf.
Ruderalis leaves are quite thin and only develop 3-5 slender fingers. Most growers describe them as comparable with the leaves of young sativa plants. Think of them as miniature sativa leaves with fewer fingers. These leaves are special as they have evolved to give autoflowering cannabis the ability to flower independent of the hours of light it receives.
Cannabis can display leaf mutations. Some of these mutations are initiated by breeders to better camouflage the plant and make it less identifiable as marijuana. Other times, mutations are a minor defect inherent to some strains. Apart from the common, gnarly-looking sets of leaves that appear on young plants, widespread leaf mutations with even numbers of fingers and ugly deformities are very rare. Excessive mutations are indicative of bunk genetics and poor breeding practices.
A visual inspection using a pocket microscope will reveal the presence of other microbial nasties. Be on the lookout for eggs, larvae, fungal spores, and mould. Leaf septoria is caused by the fungus Septoria lycopersici. This particular invader is often misdiagnosed as one of many possible nutrient deficiencies. Yellow spots suddenly presenting on leaves early in flowering, followed by a rapid yellowing and browning of foliage can destroy the whole crop rapidly. There is no time to waste with misdiagnosis.
Fluctuations in pH are responsible for the majority of yellow leaves. When the water pH is outside of the optimal ranges for your growing medium, the roots cannot access all the nutrients they need. Nutrient lockout is perhaps the most common cause of yellow leaves in cannabis plants.
Indica leaves are short and wide, typically with 7-9 fat fingers. The heaviest indicas of Afghan origin can have oversized, extra-wide fan leaves. Indica leaves are a darker, deeper shade of green. The higher chlorophyll content is believed to accelerate the bloom cycle of indica varieties.
Marijuana is coveted for her resinous flowers. It’s about time the humble weed leaf got some recognition. Let’s discuss the importance of cannabis leaves.
For breeders, Ruderalis is a valuable plant for two reasons. One is that they could use it to develop new hybrids that contain both the Sativa and Indica genetics. Another is that they could also produce auto-flowering seeds – its native trait.
Cannabis Indica – Image powered by Medicaljane.com
3. Hermaphrodite Plants
Often, regular seeds result in an even split between male and female plants. In the worst-case scenario, growers could purchase a pack and end up with all males. Nonetheless, it is the least expensive of all types of seeds.
Many people understand the importance of hemp for its many industrial uses. Only a few realize that it comes from cannabis. To keep it simple, it comes from Cannabis Sativa but has a very low THC in trace amounts.
There are three primary industrial uses of hemp.
2. Feminized Seeds
Besides the three principal families of cannabis, another term that people come across is hybrid. It turns out that the three are crossbred. In other words, hybrids are plants that possess the genetics of at least two of the families.
- Dietary fiber
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Unlike Sativa, the leaves of Indica plants are broader. One can say that it looks similar to a fan. It also does not grow as tall with most averaging between 3 to 9 feet. Due to its physically shorter structure, many people prefer to cultivate it indoors.
As a beginner in growing cannabis, all the things that need to be taken into consideration can be challenging. Here are some useful background information on the different types of cannabis.