Apr 172014
 April 17, 2014

yellow leaves marijuana plants

Deficiencies in potassium occur now and again in planting mediums and outdoor soil. They almost never occur in hydroponic systems. The problem with potassium deficiencies is that they can occur even when the soil is well-fertilized and rich. This is often the result of flawed fertilization.

Plants that have basic deficiencies will appear vigorous and potentially taller than other plants. Still, the tips and edges of the bottom leaves will shift to a tan or brown color, develop necrotic spots, or simply die.

As it worsens, chlorotic spots appear on the leaves. The leaves produce patches of red and yellow in between the still-green veins, and the petioles and stems turn red. Growth will slow and leaves will grow smaller in more severe cases. The largest fan leaves will exhibit necrosis on the margins, and they will eventually die. Potassium deficiencies are, thus, very mobile.

Too much potassium will make the fan leaves produce a yellowish or white color in between the veins. Download my free marijuana grow bible for more tips about marijuana nutrient deficiencies.

Potassium’s role in the plant is vital. It is located in every part of the plant as it’s a major factor in transporting water. It’s also important for every stage and item of growth, including the most important piece of anatomy: the buds. Other things that potassium is responsible for include, water respiration, photosynthesis, the production of thick and strong stems, and resistance to disease.

Many of the problems associated with a minor deficiency in potassium merely affect the way the plant looks and not its growth or eventual yields. One easy way to avoid any trouble with a potassium deficiency is to employ the use of Marijuana Booster. It’s a fertilizer and feeding schedule combined so that you never lose track of how many nutrients you have in your plants.

If that doesn’t work, then there are a few quick fixes for dealing with a potassium deficiency. Using water-soluble bloom fertilizers that are high in potassium is a good start. Wood ashes are also a good delivery system for potassium.

Other quick fixes include:

  • Liquefied kelp
  • Potassium sulfate
  • Potassium bicarbonate
  • Potassium dihydrogen phosphate
  • Potassium silicate

Greensand and granite dust can both be used as gradual deficiency healers.

Want to grow start growing your own? Check out my marijuana seedshop for a wide selection of top quality marijuana seeds. We ship to the United States, Canada, and number of other countries. If the order doesn’t get to you or the seeds don’t germinate, then you can get new seeds free of charge.

Source: ILoveGrowingMarijuana.Com

 

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About Robert Bergman

Robert Bergman is a master marijuana grower. Robert Bergman is the author of 'Marijuana Plant Care' and 'The Marijuana Grow Bible'.
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  2 Responses to “Potassium Deficiency In Marijuana Plants”

  1.  

    wood ashes are good and they double as a pH raiser, which is good for soils that are too acidic.

  2.  

    I’ve had no trouble ever, it can be fixed with proper testing of the soil, before you plant test all mixes by adding a soil sample to water and test with color indicator, it gets darker for higher concentration. So proper soil is the key to a good crop, mix your organic fertilizer into your soil/soil-less mix to 1/3 the directions. Mix and let some days go by then test N P Ph. I use blood meal/kelp/ bat guano in smaller than recommended amounts. Micro nutrients are in supplemental M Grow. Coco fiber is a key to good aeriration of the soil, moisture control for days.

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