Nitrogen Deficiency In Marijuana Plants

A limited amount of nitrogen is a one of the more prevalent nutrient deficiencies amongst marijuana plants. Nitrogen is definitely a very essential nutrient for marijuana.

About nitrogen deficiency

This is element is specifically in charge of creating chlorophyll and amino acids, which is necessary for the photosynthesis process.

Your plants tissue is comprised mostly of nitrogen, so with that being known the growth of your plant will cease quickly if there is ever a deficiency.

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    The deficiency begins in the lower leaves when they start turning pale green. Then the leaves will become yellow and begin dying off as the leftover nitrogen moves to help the newer growth. Nitrogen is able to travel throughout the plant as necessary.

    The deficiency will move upward and the only part of that plant that will look green is the newer growth on the top half. The lower leaves will become yellow and wither. When a leaf is dying, it begins at the tips and moves towards the inside.

    Sings of nitrogen deficiency weed
    Signs of nitrogen deficiency

    The amount of nitrogen in comparison to other nutrients plays a big role in the growth and producing buds. The plant may display signs by the leaves getting little, less growth, and the plants appear to not be thriving. The petioles and stems will be a somewhat red or purple shade.

    Too much nitrogen gives you plant a thick, dark green look, but this leaves it more defenseless to diseases and bugs. Another thing is the stalks begin to be deprived of elasticity and fragile.

    It is good to know that it is common for the leaves of marijuana plants to turn yellow around the end of the flowering stage when the plant is lacking nitrogen because it is producing buds.

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      Now, if you notice your plant is losing lower leave quickly because of the yellowing, particularly during the vegetation stage, you have an issue on your hands that requires and immediate solution.

      For the vegetative state, your plant requires a more nitrogen and just about any plant food will do the trick. The majority of the total plant foods offered at your local garden center has a large amount of nitrogen, which is great for the vegetative phase.

      Nitrogen deficiency vegetative state
      Nitrogen deficiency vegetative state

      The flowering phase requires lower levels of nitrogen. It is very necessary to get a nutrient system that has lower levels of nitrogen for the duration of the plants life cycle.

      It’s common for marijuana plants to display signs of nitrogen deficiency when the plant is approaching harvest time. This is a positive sign for your plant. An excess of nitrogen stops budding and lessens the entire taste and scent of your plant. This is the reason every “bloom” and flowering nutrient systems mostly have a low amount of nitrogen.

      Nitrogen deficiency right before harvest time
      Nitrogen deficiency right before harvest time

      Don’t worry if you notice your plant is displaying signs of nitrogen deficiency later in the flowering phase. Low amounts of nitrogen is actually a good thing during the later phase of the flowering stage to encourage good bud production and will enhance your yields.

      Not sure if your plants have a nitrogen deficiency? Read the article Nutrient deficiencies in marijuana plants for a list with pictures of all deficiencies.

      Here are some more things you can try:

      Calcium nitrate (CaNO3) as a foliar fertilizer
      Fish meal
      Fish emulsion
      Cottonseed meals
      Feather meal

      There are several pre-mixed nutrients you can find in the store that have nitrogen or even try using a nitrate of soda or organic fertilizer which are great ways to give your plant nitrogen. I always buy grow supplies at this online grow shop

      YouTube video

      List of marijuana plant sypmtoms

      Leaf Color: Leaf Symptoms: Plant Symptoms: 
      Pale Color LeavesLower Leaves and Older Growth Are DamagedOld Leaves Falling Off
      Yellow LeavesYellowing Between Veins
      Yellowing Between VeinsOld Leaves Falling Off
      Withering / Sagging

      So, keep in mind that if you have already given your plants nutrients, then most likely there is not nitrogen deficiency. If there is evidence of the deficiency spreading after one or two weeks of giving it nitrogen, then you need to determine what is creating the yellowing. If it is close to harvest time, then don’t worry about yellowing because this is normal.

      Nitrogen Deficiency leafs explanation
      Nitrogen Deficiency leafs explanation

      Closely monitor your plants and check for any issues so you are never caught off guard by a bad nitrogen deficiency. If you discover a problem and after proper treatment, your plants will heal in about 7 days are so, with an exception of the leaves that were harmed the most.

      Remember that plants with strong genetics have less chances of getting sick. Make sure you buy marijuana seeds from a trusted seedbank.

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      FAQ about Nutrient Deficiencies in marijuana

      What causes nutrient deficiencies in marijuana plants?

      Improper pH levels can cause nutrient deficiencies in your marijuana plants. You need to make sure that the soil soil should not be too acidic nor too alkaline.

      What are the common signs of nutrient deficiencies in marijuana?

      Here are three common signs that should clearly tell you about the health of your marijuana plants: Discoloration, Drooping and Low Yields

      What are the common signs of healthy marijuana plants?

      Here are some common signs of healthy marijuana plants: Spotless green leaves, Plant stature is sturdy, High yields, Plant shows its preflower on time, Enough number of leaf fingers.

      Thanks for reading. Please leave comments or questions below and don’t forget to download my free grow bible


      Robert Bergman

      Robert Bergman is an Amsterdam-based marijuana grow expert who has years of experience from small grows to massive operations. His passion for growing lead him to develop his own Gold Leaf strain. Now, Robert is dedicated to sharing his knowledge with the world.... [Read full bio]


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