potassium deficiency cannabis

How to Deal With Potassium Deficiency in Cannabis

Although growing cannabis is an exciting venture, you cannot deny the fact that there could be certain issues that could come along while on your traverse. But despite these problems and hardships, you should not lose your positive disposition since each problem is almost something you can effectively deal with.

One of the common issues that are encountered by cannabis growers is potassium deficiency. The critical part is implementing the right analysis since the manifestations of potassium deficiency cannabis is quite the same with light burn and nutrient burn. If you want to enjoy the product of your cannabis plants, you should learn to deal with this problem well.

Understanding the Role of Potassium

Potassium has essential tasks in the development of cannabis plants. It reinforces the method of photosynthesis which provides the plant a vibrant green shade and is essential to its hardiness. It also supports the plant to establish a powerful root zone that is unyielding to root decay and does not deteriorate during the cold season. This turns potassium a vital nutrient to supervise in outdoor-grown plants, particularly where the climate can be uncertain.

Moreover, potassium helps control water consumption in the plant. With the appropriate quantity of potassium, cannabis plants can be defiant to times of scarcity by conserving and concentrating water on the most delicate parts.

Common Indications of Potassium Deficiency

Knowing that cannabis is an essential nutrient in the development of the cannabis plant, the cultivators must be knowledgeable about the common indications of potassium deficiency. These are the signs of potassium deficiency:

Besmirched Leaf Tips

One of the first indications of potassium deficiency is the yellowing of the edges of the leaves. The besmirching commonly begins on old-grown and impacts the newly-grown while the condition gets worsens. Sooner or later, the yellow edges become crispy and brown.

Markings on the Leaves

Another indication is the noxious markings on the leaves of the plant. These spots are crispy and brown like the tips of the leaves, commonly turning white or pale yellow spots, too. These markings tell that the cannabis plant is developing an inadequate quantity of chlorophyll; however, the veins in the keep remain green.

Blotted Stems

While the potassium deficiency gets worst, other parts of the plan start to demonstrate indications of getting blots.

Snuffed Out Plants

Cannabis plants that are experiencing potassium deficiency will snuff out and you will also notice the stems to get weak. Cultivators commonly mistake this sign for excessive growth, but in reality, the plants are not growing bigger. Rather, they are snuffing thin while growth is suspended. Leaves are smaller, manifesting a riskier level of potassium deficiency.

Dealing with Potassium Deficiency Cannabis

Potassium deficiency cannabis is an issue where your cannabis plant can recuperate from. There is no need to get panic when you find this condition affecting your plant you can surely deal with this condition if you get the patience and willingness to learn. By learning effective ways of handling this concern, you can help your plants recover from this condition.

Adding Nutrients

Giving your cannabis plants proportioned cannabis-inclined nutrients can render your plant a boost on potassium. You can choose from synthetic or organic nutrients according to your choice. You may also want to use phosphorous and potassium booster on top of the nutrients.

In case you do not have base nutrients or potassium booster, other alternatives are potassium silicate, liquefied kelp, or potassium bicarbonate. Another option for an organic solution is wood ash since it has plenty of potassium. Moreover, see to it that you are employing quality soil to cultivate your cannabis plants since it is an essential element for a vigorous and hearty plant.

Ensuring it is not Light Burn

Keeping the plants extremely near to the grow lights can cause light burn which may appear precisely the same with potassium deficiency. If you are employing MH/MPS or LED, consider putting the lights several inches from the plant to see if the problem persists.

Watering Plants Properly

Overwatering could result in a potassium deficiency. along with other kinds of nutrients. Excessive watering could rotten the roots of the plant which inhibits it from consuming any nutrients. If you detect any indications of overwatering, you must address the concern before the occurrence of potassium deficiency.

Achieving the Right pH Levels

There are times that potassium is not properly consumed by the cannabis plant due to inappropriate pH levels.  You must know that potassium is consumed from the soil at the best level between the ranges of 6.0 to 7.0. Confirm the pH level of the soil and if you find out that it is beyond the ideal range, drench the medium using pH-balanced water.

After performing these corrective measures, continue to monitor the progress of your cannabis plants. The old-grown plants will not display indications of recuperation, but newly grown ones will surely demonstrate improvements.  Bear in mind that it is vital to deal with potassium deficiency immediately as it can slay your plants if it continues.

This condition can also cause an impact on the yield since potassium is required for the releasing of terpenes which is responsible for adding fragrance to the buds.


Luckily, potassium deficiency cannabis is something you can deal with easily. You can expect to notice developments in your plants from a potassium deficiency in just a matter of one week. If the concern is dealt with immediately, there shall be nominal long-term ramifications, thus you must act early. Nevertheless, injured leaves can never recuperate and must be taken out.

Potassium deficiencies can potentially destroy the spunk and health of your cannabis plants. You must get a good grasp on what triggers a potassium deficiency. It is also important that you are aware of the manifestations and do abrupt corrective measures to rectify the issue. With proper care, cannabis growers can have quality products by the time of harvest.

For more expert tips on how to grow your weed, click here!

Leave a Comment

Your email address will not be published. Required fields are marked *