Weird or What?
Normal cannabis seedling (2 leaves per set)
Every once in a while, growers will run into a “trileaf” seedling. This is a relatively common mutation, and you're likely to run into it if you germinate a lot of cannabis seeds. 3-leaf cannabis seedlings should generally be treated like any other seedling.
They will grow about 1/3 more side branches than regular seedlings, so a 3-leaf seedling might be a good candidate for cannabis plant training or a ScrOG setup.
Tri-leaf cannabis seedlings (3 leaves per set)
2.) Two-Toned Leaves
Two-toned leaves usually have split coloring in a relatively straight line. This mutation often affects just one or two leaves on the whole plant, though sometimes you'll get a whole stem or part of the plant that displays this characteristic.
The two-toned leaves don't seem to have much effect on anything, but it's kinda cool looking!
I believe this happens due to a type of “variegation” (wikipedia link) and may be due to “sectorial chimera”. Other plants besides cannabis plants can have this happen, too!
Not to be confused with a nutrient deficiency, this mutation usually affects just one or two leaves on the plant. Nothing to worry about! Sometimes half of the leaf will turn purple....
More commonly, half of the leaf will turn light yellow or even white.
3.) Buds Growing From Center of Leaf
Here's a normal cannabis leaf. Unfortunately, as beautiful as these leaves are, they normally contain no THC.
Normal Cannabis Leaf
Cannabis leaves that are growing buds
This is a mutation I’d love to see on my plants one day :) Though strangely placed, these buds are like any other buds found on the plant. You just get a couple extra buds encrusted with THC & trichomes!
The following leaf-bud has grown a single calyx with a few pistils
Here's another amazing plant - imagine what you could do with all the trim!
The following nug is almost 1/2 gram - Talk about a bonus!
4.) Uncommon mutation - Plant naturally topped itself
What's interesting about this case is that the plant naturally did something that the grower would normally have to do themselves. Cannabis plants normally grow in a triangle tree shape, and growers often must cut or train the plant in order to grow more low and bushy.
Growers sometimes accomplish a low and bushy growth pattern with a plant training technique known as "topping." Learn more about topping
Here’s two normal young cannabis plants, each with a regular growth tip (set of leaves) at the top:
Normal cannabis plants
So to get rid of this top growth node, a grower would normally cut it off, like this
Now the following plant had a strange mutation...
This plant randomly grew a leaf instead of a growth node, so it naturally topped itself, take a look!
View more pictures of this unique plant: http://imgur.com/a/PqpTu
5.) Some Buds Make “Fox Tails”
Bud with little foxtailing - common with Indica-based strains
Massive foxtailing can be a genetic trait, and certain strains will tend to produce foxtails all over their buds no matter what. This seems to happen most commonly with Haze and Sativa-based strains.
This way that buds can grow is named after "fox tails" because the buds tend to grow in a rounded shape with the fluffy hair-like pistils coming from the end.
Example of healthy foxtailing based on genetics
However, massive foxtailing is often the result of heat or stress. You know that's likely the case when the foxtailing seems to be happening most in the parts of the plant that are close to a heat or light source.
When a single foxtail keeps growing longer and longer, it is almost always a sign of some sort of major stress to the buds, most often heat.
This massively long foxtail was caused by heat
Here's another foxtail that was triggered by too much heat
The following bud erupted with foxtails after a heatwave
6.) This Is What Cannabis Roots Look Like
This incredible roots picture was taken by grower Ramon. The plant was first grown in hydro (with the roots grown directly in water), then transferred to soil.
7.) Cannabis Seeds Can Carry “Twins”
Twin tap roots can sometimes emerge from one cannabis seed. This is sort of like your seed having twins, because each new root has the potential to form into a separate plant.
From the grower, “When I got the seed it looked really deformed.”
8.) Leaves with Strange Number of "Fingers"
It's normal for cannabis leaves to have a different number of fingers.
First let's go over what's normal
For an adult cannabis plant, the most common number of fingers is 7. Here's a few examples of 7-fingered leaves.
7 Finger Leaves
Cannabis leaves start smaller though, with fewer fingers. Here's what leaves generally look like from seedling to adult.
Next, the single-finger leaves expand, and the next set is usually 3-finger leaves
Next, the cannabis plant will start making 5-finger leaves
Finally, most cannabis plants stop at 7-finger leaves
If you look closely at the above plant, you can see that some of the newer leaves on this plant actually have 9 fingers. Here's an example of a leaf that has grown 9 fingers:
It's completely normal for cannabis plants to have 9, 11, or even 13 points on their fingers. This is just a natural way that some leaves grow. It's also common to get single-blade leaves growing directly off your colas.
Sugar Leaves Are Normal on Colas
Now That You Know What's Normal...
These Sugar Leaves Have a Long Base Like Regular Adult Leaves
In This Case, The Entire Plant Grew with Single-Finger Leaves
And Yet Another Strange Plant with Single-Finger Leaves
Want even more strange leaves?
Look What Happens When You Re-Veg a Plant...
This is a Re-Vegged Plant
A re-vegged plant will grow round single, triple, or quintuple pointed leaves at first, before it starts growing regular serrated leaves.
Re-vegetating a plant means you take a flowering/budding plant and put it back in the vegetative stage. It is also sometimes referred to as "Monstercropping" or "Monster Cropping." This refers to the fact that a revegged plant will tend to grow much bushy than a plant grown from seed.
Some growers like to reveg a plant on purpose after harvest, instead of throwing it away.
Benefits to re-vegging (monster cropping)
Downsides to re-vegging (monster cropping)
Sometimes re-vegging happens by accident - a grower puts their flowering plants outdoors too early in the year, and the plant reverts back to vegetative growth. Sometimes a grower will start flowering a plant, and have to return it to the vegetative stage for some other reason. In all these cases, the plant will display these strange rounded leaves for a while until it gets back in the swing of things.
These cannabis plants were re-vegged by accident
Close to Harvest
Right After Being Brought Outside Too Early in the Year, Causing Re-Veg
Plants Can Also Re-Veg If You Clone a Plant That's Already Budding
Here's two clones from a flowering plant
9.) It’s Possible to Bleach Plants With Too-Bright Light
Light Bleaching - most common with high-power LEDs, but can also happen poorly ventilated HPS lights that are kept too close to the tops of the plants. Basically, this is what happens when plants get too much light, kinda like how hair on top of your head can turn lighter if you spend a lot of time in the sun.
Buds which have been bleached tend to be low potency or even have no potency (no available THC or other cannabinoids). Therefore you should avoid light-bleaching your plants at all costs!
Sometimes light-bleached cannabis will get mis-labeled as “albino cannabis” or “white cannabis” but the truth is that the white color is not healthy, so this is not a desirable trait (even if it looks pretty cool).
10.) Flowering Cannabis Plants Can Make “Sap”
Sap - there’s lots of speculation about what it is. No one knows for sure. Many growers who have run into this agree that the type of sap produced is sweet and doesn’t contain much (if any) THC. It is mostly made of sugar and water and so is not smokable. Seems to be related to the plant over-producing sugars, and sap productions is more common when
Stem Sap (more common) - often appears to seep out of injured parts of the stem, but not always! Sometimes sap seems to ooze out of uninjured parts of the stem.
In this last case, there's nothing that seems to be causing the sap except possibly genetics. Here's what HNIC_204, the grower, had to say...
Check It Out!
Fact: Certain Strains Are Easier to Grow Than Others
3 Recommended strains for beginners
Beginners - Avoid these strains!
The following strains are considered “advanced” and while they produce amazing buds, they tend to be difficult to grow and/or finicky
Ready to Start Growing for the New Year?
Get Your Stuff!
First, choose your grow type...
Did You Know? - 5 More Fun Facts For Cannabis Growers
Cannabis plants are always moving
This constant movement is something that all plants do, and is known as "Circumnutational Movement" (wikipedia link).
Nothing can really show you as well as watching a time-lapse video:
This video shows several incredible time-lapse videos of growing cannabis plants, set to music
View 10 more time-lapse videos of growing cannabis plants
Cannabis plants can “see”
This is an except from What a Plant Knows: A Field Guide to the Senses by Daniel Chamovitz. I highly recommend this book if you want to learn more about plants and exactly how they perceive the world!
Read reviews about some of the better cannabis growing books available today
No one knows exactly how cannabis plants determine gender
Learn more about cannabis sex determination on wikipedia.
Learn how to use these unique properties to make your own feminized cannabis seeds at home
A cannabis plant can grow taller than a tree in just one summer
Here’s an cannabis plant that produced 11 pounds 3 ounces worth of bud - grown in a 400 pound smart pot and filled with Vermisoil.
Look at the base of a cannabis plant this size, it looks just like a tree trunk with bark!
Cannabis seeds can germinate almost anywhere warm and wet
Life Finds A Way
“My friend accidentally grew this in her sink. How is this even possible?”
Seedlings have enough energy (“food”) stored in the seed to make their first set of leaves. After that, they need light and nutrients to grow further. Unfortunately, this seedling won’t make it unless transplanted to a more suitable growing environment.
Learn how to germinate cannabis seeds right here
THC-Filled Trichomes Can Grow Just About Anywhere on a Budding Cannabis Plant
Growers are breeding strains that produce more and more trichomes all over the plant.
Trichomes are small, glandular stalked resin glands that carry the majority of cannabinoids and THC produced by the cannabis plant.
A bud covered in trichomes will have an almost “sparkly” or “glittery” appearance. Cannabis breeders are selecting cannabis plants which produce more of these sparkly trichomes not just on buds, but on leaves and stems close to buds This is done with the purpose of getting more potency with the same amount of time, effort and space.
Crazy trichome closeup, thanks to Koma Trichome (find Koma on Facebook)
Vegetating Cannabis Plants Have an Amazing Ability to Heal