Select leaves discoloring, drying, and dying

[Mugwort]

Appreciate any help...Random fan leaves are doing this on this one plant which is one of five that are grown in same soil (FFOF) in 7 gal fabric pots, are watered and fed at same time.

-Plants are fed FF Big Grow 2x/wk (2tsp/gal)
-1 tsp CalMag Plus once/week
-1 tsp Snow Storm Ultra once/week
-1/4 tsp/gal Element Nutrients “Myco+“ once/wk
Plants watered every other day with r/o water

I’ve looked under magnification and observed no bugs. This is on only one of my plants which are watered and fed from same source. Could this be some kind root issue? All the plants were kept too long in one quart plastic pots longer than they should have but transplanted at same time. This is only my fifth grow and I am stumped. I posted once before and received no response from you guys. Do you think I should just toss it out?

 

[Mugwort]

Appreciate any help...Random fan leaves are doing this on this one plant which is one of five that are grown in same soil (FFOF) in 7 gal fabric pots, are watered and fed at same time.

-Plants are fed FF Big Grow 2x/wk (2tsp/gal)
-1 tsp CalMag Plus once/week
-1 tsp Snow Storm Ultra once/week
-1/4 tsp/gal Element Nutrients “Myco+“ once/wk
Plants watered every other day with r/o water

I’ve looked under magnification and observed no bugs. This is on only one of my plants which are watered and fed from same source. Could this be some kind root issue? All the plants were kept too long in one quart plastic pots longer than they should have but transplanted at same time. This is only my fifth grow and I am stumped. I posted once before and received no response from you guys. Do you think I should just toss it out?

 

[ComfortablyNumb]

https://www.growweedeasy.com/wp-content/uploads/2010/04/manganese-info-marijuana.jpg

 

[Mugwort]

https://www.growweedeasy.com/wp-content/uploads/2010/04/manganese-info-marijuana.jpg

Thanks Numb...yes, the leaves do look like that but it is growing rigorously and is the only one of five clones that is exhibiting this. They all drink from the same bottle at the same time. Are you saying it’s a Manganese deficiency or toxicity?

 

[growsince79]

Is it the one closest to the light?

 

[ComfortablyNumb]

Thanks Numb...yes, the leaves do look like that but it is growing rigorously and is the only one of five clones that is exhibiting this. They all drink from the same bottle at the same time. Are you saying it’s a Manganese deficiency or toxicity?

It looks that way.

Is the problem is starting at the bottom of the plant and moving up?
If yes, then that tells you that it is something the plant ate or was not able to eat.

Diagnosis step-by-step:

Bottled Nutes:
When its bottom up;
1. Check pH.
2. What are your ppms in and out?
If your ppms are lower going in, then you may need a flush to clear any buildup.
3. When and how often and how much do you water?

Basic Watering

Marijuana Watering, how media, pot size/shape and environment affect it

Ok lots of posts on how to water plants. So I thought I would put together a thread on how different factors contribute to different results that ppl see. This will be a long read based on my personal knowledge, opinions, research and others work to consolidate information for our members. I'm...

www.thcfarmer.com

Watering SOIL

New Simplified Way to Water Marijuana Plants

The other day I had an idea and after testing, it works great. To know if you need to water, get yourself a soil meter. Poke or drill 4 holes in your pot 1/4 way up from the bottom spaced around the pot. Insert the meter probe into the hole and test for moisture. If its dry, then water SLOWLY...

www.thcfarmer.com

Watering COCO

HOW TO WATER COCO FOR BEST RESULTS.

Ok writing this cause i see this issue often and rather have a thread to link than explain this each time. This is not my work but a collection of info from many members here and I have put into practice myself. So first off COCO is NOT soil. For best results we want to keep it saturated...

www.thcfarmer.com

4. What have you been feeding and how much and how often?
Depending on what you feed, you may be overfeeding one thing that will block uptake of something else.
All bottled and store bought nutes need to be cut by 50% before you do anything. They are the extreme numbers for plants. Do your plants a favor and don't overfeed them.

5. What is the temp of your root zone? Take the temp of the pot, or use an old thermometer and insert it in a probe hole 1/4 way up from the bottom and see what the temp is if you can.
Root zone issues can look like anything, so you always want to prevent it by having well draining and airated pots.
So, get the temp and then we can add it all up and see what's what.

For Organics, do 3 and 5 because the others should not apply.

 

[growsince79]

7gal pots of soil watered every other day? Your lucky its only one plant so far. I water 2 gal pots every other day. Check the runoff ph. PPM will be high because you're in ffof. That doesn't matter. The problem is the over watering.

 

[Mugwort]

It looks that way.

Is the problem is starting at the bottom of the plant and moving up?
If yes, then that tells you that it is something the plant ate or was not able to eat.

Diagnosis step-by-step:

Bottled Nutes:
When its bottom up;
1. Check pH.
2. What are your ppms in and out?
If your ppms are lower going in, then you may need a flush to clear any buildup.
3. When and how often and how much do you water?

Basic Watering

Marijuana Watering, how media, pot size/shape and environment affect it

Ok lots of posts on how to water plants. So I thought I would put together a thread on how different factors contribute to different results that ppl see. This will be a long read based on my personal knowledge, opinions, research and others work to consolidate information for our members. I'm...

www.thcfarmer.com

Watering SOIL

New Simplified Way to Water Marijuana Plants

The other day I had an idea and after testing, it works great. To know if you need to water, get yourself a soil meter. Poke or drill 4 holes in your pot 1/4 way up from the bottom spaced around the pot. Insert the meter probe into the hole and test for moisture. If its dry, then water SLOWLY...

www.thcfarmer.com

Watering COCO

HOW TO WATER COCO FOR BEST RESULTS.

Ok writing this cause i see this issue often and rather have a thread to link than explain this each time. This is not my work but a collection of info from many members here and I have put into practice myself. So first off COCO is NOT soil. For best results we want to keep it saturated...

www.thcfarmer.com

4. What have you been feeding and how much and how often?
Depending on what you feed, you may be overfeeding one thing that will block uptake of something else.
All bottled and store bought nutes need to be cut by 50% before you do anything. They are the extreme numbers for plants. Do your plants a favor and don't overfeed them.

5. What is the temp of your root zone? Take the temp of the pot, or use an old thermometer and insert it in a probe hole 1/4 way up from the bottom and see what the temp is if you can.
Root zone issues can look like anything, so you always want to prevent it by having well draining and airated pots.
So, get the temp and then we can add it all up and see what's what.

For Organics, do 3 and 5 because the others should not apply.

Thx numb...will read all of these!

 

[Mugwort]

Thx numb...will read all of these!

 

[Mugwort]

7gal pots of soil watered every other day? Your lucky its only one plant so far. I water 2 gal pots every other day. Check the runoff ph. PPM will be high because you're in ffof. That doesn't matter. The problem is the over watering.

I thought it was difficult to overwater a fabric pot? When I do water I don’t water to the point where there is any runoff!

 

[Imzzaudae]

 

[hillbil]

That mix must be saturated past the point of what Cannabis can handle, might try watering in 4 or 5 days.

 

[ComfortablyNumb]

Lets have some pix that show the soil, side views of the plant, and closeups of bad leaves on the plant.

 

[Mugwort]

That mix must be saturated past the point of what Cannabis can handle, might try watering in 4 or 5 days.

What mix and what are you talking about? My plants don’t get overwatered. “That mix” is FFOF and is in 7 gal fabric pots. I don’t saturate the soil when I water

7gal pots of soil watered every other day? Your lucky its only one plant so far. I water 2 gal pots every other day. Check the runoff ph. PPM will be high because you're in ffof. That doesn't matter. The problem is the over watering.

Are you assuming that, when I do water, that I am watering with sufficient volume to cause the fabric pot to have runoff? Because I don’t!