Cannabis lovers, rejoice: It's legal to grow recreational or medicinal cannabis at home in at least 18 states right now. This is great news for those who would love to grow a cannabis plant in the comfort of their own four walls. Here is a up- to - date list on where it's legal to grow cannabis in the USA and in Europe.
However, growing cannabis isn't as easy as it might seem.
If you're tired of researching "cannabis plant light green," then we've got you covered. The answer is simple - your plant might need some love. Check out what to do if your cannabis leaves or cannabis plant is turning light green below!
Reason 1: Incorrect PH Balance
If your cannabis leaves are light green, chances are that they're starting to wilt, curl, or spot too. Sadly, this can happen for several reasons. However, we can help you pinpoint exactly what the true "root of the problem" is, such as the soil pH of your cannabis plant's roots.
Here's the thing. Whether you grow cannabis in hydroponics, coco coir, or hydroponics, you might see light green leaves if the pH near your plant's roots is either too low or too high. Sometimes, it's hard for a cannabis plant to absorb all the nutrients when its pH is off balance. As a result, you may see signs of nutrient deficiency even if these nutrients are present near its roots. Certain nutrients are more "available" at certain pH levels. As you can see below, most nutrients are highly available when the pH is neutral to slightly acidic.
Symptoms of an Incorrect PH
In case you didn't know, some of the biggest symptoms of an incorrect pH include light green leaves, as well as stripes, spots, or patches. Burning near the edge of your leaves is also a big red flag.
As a matter of fact, most nutrient deficiencies in cannabis plants can be caused by an imbalanced pH. That's where you - the grower - come in. It's your job to make sure that your pH is in the correct range.
For hydro optimum or coco coir, the goal is to have a pH between 5.5 pH and 6.5. For soil optimum, the range is between 6 pH and 7 pH. Luckily for you, it's a quick fix to get your soil back in order.
For starters, get a pH pen kit to test your water's pH before you offer it to your cannabis plants. Then, make the necessary adjustments by adding a base or an acid to your plant's water. Simple as that!
Don't want to worry about pH balancing? Get a Grobo! Grobo automatically tests and adjusts the pH of the water for your plants hourly. No need to worry about imbalances!
Reason 2: Bad Watering Habits
Get this: It is much more popular to over-water your cannabis plants than to under-water them. Regardless of which bad watering habit you're guilty of, the result is pretty similar. No matter what, learning how to water your plants the right way at the perfect time is easy.
The reason why overwatering and under-watering show the same symptoms is quite simple. When overwatered, your plant is likely to develop root root. If your plants roots have root rot, they cannot uptake water, which makes the leaves wilted and pale green. When you underwater, the roots are still unable to uptake water as there isn't enough water for the plant to absorb!
Signs of Poor Watering Practices
First things first, the symptoms that your cannabis plant needs more or less water include:
- Light green or yellow leaves
- Droopiness and wilted leaves
- Papery, thin leaves
- Rotten scent coming from soil
- Leaf drop
Unfortunately, overwatering can happen to growers who are caring for younger plants, especially since they have weaker, smaller root systems.
Plus, if your soil isn't draining properly, then your plant can show signs of overwatering no matter if you're watering your plants correctly or not. On top of that, large plants in tiny containers can be under-watered easily, while tiny plants in huge containers can be overwatered easily.
overwatering and under-watering isn't about the amount of water you give you plant, its about thee frequency of watering. The soil needs time to dry out so that the macropores in the soil can fill with oxygen. Without oxygen around the roots, bacteria and fungi that thrive in oxygen-less atmospheres develop. They release toxic compounds that eat the roots of your plant, causing root rot.
First of all, you've got to invest in a good growing medium. You want a soil with good drainage so that the plant doesnt develop root rot. Then, be sure that your plants are in the correct sized container for their overall size. Next, look out for signs of drooping and check on the roots if you feel they may be overwatered.
If they're drooping, light green cannabis leaves start to regain color and strength after dealing with the over or under-watering issue.
Reason 3: Nitrogen Deficiencies
Sick of dealing with light green cannabis leaves? Have no fear - this may be a sign of a serious but curable nitrogen deficiency in your plant.
Red Flags of Nitrogen Deficiencies
Besides pale green leaves, other symptoms may include:
- Sickly leaves near the bottom of your plant
- Soft, yellowish leaves that are easy to pull off
- Leaves that fall off on their own
Crazily enough, your cannabis plant may be using up the nutrients in their soil faster than you'd think. Naturally, this can happen after your cannabis plant has been stuck in the same small container for a handful of weeks or months.
The same problem can also occur in hydro or coco when you're not giving your plant any additional nutrients. This is especially important because plain water or coco can't contain nitrogen naturally.
To fix this issue, all you have to do is give your cannabis plant a regular dose of plant nutrients from any cannabis nutrient system. You could also consider repotting the plant if you feel it could use more space.
Pro tip: Cannabis plants that turn light green all over need more nitrogen. Healthier plants will appear as a more "medium green" when they've received enough nitrogen. However, too much nitrogen can lead to light green cannabis leaves too!
Here is a picture of a healthy cannabis plant:
Reason 4: Harsh Light Burns
If you've never thought about how harsh your grow lights are for your cannabis plants, then you're in for a rude awakening. Also called bleaching, this is when the plant receives too much light.
Causes of Light Burns
Symptoms that your cannabis plant is experiencing some serious light burns include light green cannabis leaves that won't pull out on their own (even if they're dead). Also, light burns can take several weeks to develop, which might explain why your cannabis leaves have turned light green toward the end of their flowering stage.
The craziest part about these types of burns is that they only impact the top cannabis leaves rather than the entire cannabis plant. So, how does this work, you ask?
Light burns can happen when your cannabis plants are too close to the light, hence why the ones closest to the light are the most affected. Even if your temperature is in the perfect range, your cannabis plant can still suffer from a light burn if your grow light is placed too close to it. This is also common for those who have powerful grow lights such as:
- HPS grow lights
- LED grow lights
- LEC grow lights
That being said, some cannabis plants are just more sensitive than other cannabis plants. While one of your plants may be dealing with a problematic light burn, others may be fine. This can make it difficult to find out what the problem is, especially if some of your cannabis plants appear to be thriving at the same time.
To solve this, the best thing you can do is to move your grow lights further away from your cannabis plant. Otherwise, bend the impacted plant so that it's more distanced from the grow light. Problem solved!
Bottom Line: Bring Your Plants Back to Life
From harsh grow lights to bad watering habits, there are tons of ways you could accidentally kill you cannabis plant.
To bring your cannabis plant to life, keep an eye out for light green cannabis leaves and drooping at the beginning of your plant's day. Sometimes, all that it takes is a few tweaks in the nutrient department to get your plant back on its feet. Once you begin monitoring your plant's soil pH levels, then you'll be sure to have a healthy plant on your hands in no time.
Our general rule of thumb?
If you're not sure what to do, take a look at what the manufacturer recommends in terms of how far you should keep your grow light from your cannabis plants. That should do the trick!
You could also check out some cannabis growing forums such as All Growers. This is where fellow growers share their tips and tricks, and even offer advice to novice growers!
Do you have any advice for beginner growers? Comment below!
Curious About Growing Cannabis?
Interested in growing cannabis and other plants at home?
If so, don't hesitate to contact our team of experts about our automated grow box today!
Grobo is an automated hydroponic grow box designed to make growing easy.