Are you Over Watering Your Marijuana? Simple Ways to Recover !

I know I’m guilty!

You may be too, of over watering your marijuana plants.

I’ve watered my plants to much on several occasions.

But don't worry, there are many ways to get out of this mess.

So let's save your plant's !

  • Fact: One of the most common problems when growing in soil is watering too frequently.

Over watering marijuana can happen to anyone especially if you are new to growing.

Even experienced growers have this happen to them from time to time, although some may not admit to it.

If you're not careful it’s not good for the plants and it also becomes an excellent habitat for root aphids.

Watering your plants too much can lead to mold buildup and also result in a perfect place for fungus gnats to thrive.

They love the damp top soil or medium and rock wool.

Try and use about an inch of sand on the bottom and top of your grow medium of soil or coco coir to prevent an infestation from a lot of root eaters.

Here's a quick look at to what happens when you water your plants to much.

But seriously though it's when you suffocate your plant's roots with water because plants love oxygen.

If growing in soil or coco coir you can disturb the little air pockets in the soil or coco with too much water according to Colorado State University.

This can be the case when you grow with hydroponics you can encounter root rot from not allowing ample oxygen to hit the roots.

Signs of Over Watering 

  • Leaves curl downwards
  • Leaf tips turn yellow
  • Leaves will fall off for no reason
  • Plant Leaves droop (hanging down)
  • Slow plant growth, stunted
  • Constant damp top soil or coco
  • May look like a magnesium deficiency
  • May seem like a nitrogen deficiency

Your leaves should have the texture of paper. Feel them are they firm? Not weak and limp.

How to Fix Over Watered Cannabis Plants

Stop watering and let the plant dry out. Not completely( this will damage your roots) but close to it.

Go longer in between watering

Stop watering so often (this is usually the cause).

Place a towel or newspapers or flyers under the pots drain holes to soak up excess water after all the runoff finishes.

May need to drill extra drainage holes in pots with soil if not getting proper runoff.

Make air holes in the top of soil or coco coir with chopsticks (beware you open the gates to gnats).

Increase the heat slightly in the grow area a degree or too.

Bring in an extra fan.

If growing in soil remove from current pot and place into a slightly bigger and or same size pot or fabric pot to aid in drying it out faster to save the plant.

When using Hydroponics have a better Air Pump or Air Stone.

Add one if you don’t have one yet. It's essential !

Warning : It may be too late already.

Even if you try some of the solutions, it's all up to the plant on if it wants to or can recover.

Some genetics are weak and are not strong enough to recover from watering too much. It's when the plant has reached extreme stress.

I have seen both over watered, and under-watered plants recover. Until 4-7 days later just slowly start to die.

It's mainly due to root rot.

Be positive! Usually, you will catch this before it’s a major problem.

That’s why you're here.

Ways to Prevent Over Watering Marijuana

Soil or Coco Coir:

  1. When growing in soil make sure you have a high drainage soil such as Promix or Happy Frog.
  2. Add perlite if your soil doesn’t have it already or coco coir 1-4 ratio both are great for drainage.
  3. Do not saturate the soil when transplanting or planting.
  4. Try Smart Fabric Pots.
  5. Drill extra drainage hole in the bottom of pots.
  6. Use a Water Meter or Moisture Meter in soil or coco if needed.
  7. Use the finger method by sticking your finger in the soil about an inch to see if dry.
  8. Avoid vermiculite it helps to retain water.
  9. One trick for soil so you do not over water is to take an empty pot and fill it with soil and use that one as a test. Check when to water by judging by the weight of your plant compare to the pot of soil.

Hydroponic growing, just keep a good air stone or air pump at all times !

Have proper ventilation to help the plants breath and release their moisture build up.

Use a calendar for your water and nutrient feeding days; you may have to adjust as you go.

A good rule of thumb is to always check if your plants need water and not just assume they do.

Check out the video on over watering,

Over watering your marijuana plants happens the most in soil.

When you grow in Coco Coir hydroponically or running a hydroponic system it's hard to water to much but is known to occur on occasion.

Remember there is nothing wrong growing in soil. Many growers prefer this method for the flavor and watering less often.

Where with hydroponics you run one to two times a day with a watering schedule.

Hopefully, this helps you get over this issue, and you save your plants.

Let me know in the comments what works for you or if you have any better solutions.

Grow on my friends.



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12 thoughts on “Are you Over Watering Your Marijuana? Simple Ways to Recover !

  1. I over watered my plants, they looked awful, curled yellowing leaves.I dried them out for a few days. Took them out and put into burlap bags where the soil was able to dry out. Now two weeks later back in 15 gallon pots, they look greener but leaves are still slightly curved and some are continuing to yellow. I only water at the tray, so the water is soaked up from the bottom through holes, twice a week, a mere half gallon into the tray at most. I check the soil from holes that are 4 inches from the bottom. Soil is moist but not compactable. Like a damp sponge feeling. Will the yellow leaves return to green and healthy or do I need to wait for new growth to see if new watering schedule is good?

    • Hi Charlie

      Glad your plants are starting to bounce back slowly.
      In regards to the color of your leaves going back to green and healthy, those leaves will probably not go back to being the vibrate green they should be . So yes it’s best to check for new growth leaves to gauge if your plants recovering.
      May I suggest to water from the top of the pot , this is great for the whole root structure of the plant and the tap root starts at the top of the soil it’s the main artery for the plant to get it’s nutrients to the rest of the stems. When watering if you do not get run off then your plants have enough water and do not water until they are dryer. Your plants may also not be up taking nitrogen due to being over watered. If your leaves are continuing to turn yellow.

  2. Yes i have 4 n. Lights growing, in 4 three gallon containers. 3 days after transplant.my soil. is happy frog. They will be 5 weeks old monday. Theywere very healthy, then even before transplant. Now all the leaves are drooping, hugging themselves? I took too out of the tent put them back under 100w cfls. My tent is a 400w metal halide for the veg stage. Could be transplant shock? They were drooping before the transplant. Thank you

    • Hi Tony,
      I could possibly some kind of shock , after transplant, if they were drooping before you transplanted they could have been over watered a little but prior. Best wait a day or two see how they are doing getting used to there new home. Then maybe try some kelp seaweed to see if they spring back. I have some info on transplant shock and a short video https://www.sensigarden.com/transplanting-cannabis/ check it out if you want it may help.
      Best of luck !

  3. over watered and PH slightly too high i suppose, lots of curled dying leaves
    gave her light feeding with proper ph after it seemed pretty dry , things are looking up!

  4. I’ve started growing in my garage. Plants have been behaving well feeding nutrients but I definitely overwatered them. When moving from clones to my garage to vegetate I was feeding a litre of water each. Now I’m going to water 500ml every 2-3 days. 2 x 400w Hps lights with 10 plants. The leaves started curling in and I know this is because the room they are in is around 35 degrees in the day and 28 degrees in the evening. I’m cycling 18/6 with lights. I have a inlet and outlet fan however I know that the oven my plants are in isn’t going to help. Please let me know what I need do to do better and save my plants.

    • Hi SAgreen,

      I would recommend a AC , if your talking in Celsius for temps 35-28 degrees. That’s pretty hot for your plants. Or maybe bring in an extra fan. As for watering it all depends, on how they feel when you pick them up, try and aim for some runoff. You seems to be in the happy zone for watering every 2-3 days.
      I hope this helps.

  5. I am on day 18 of flowering outdoors in 5 gallon pots. I made the mistake of using just soil from a garden store (no added nutrients). I think it made it easier for overwatering to occur so I water every 5 days or so but there is little to no drainage. Do you think its worth it to transplant into a pot with a proper mix of perlite/soil/smart fabric pot or would it be too dangerous at this point?

    • That’s a tough call. I would maybe try one plants to sacrifice, try it out for 2-3 days maybe 5 to see how well it took to the new potted environment. I would definitely user a bigger sized pot so not to disturb the root system to much.
      Good Luck.
      (warning> not responsible for any loss of plant life.

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