Plant is being tricky... Soil Moisture?

M

Mire

Member
So, this is beginning to get a bit frustrating. I was getting ready to go into flowering this week, but last week, my plant seemed to be over watered, so I held off. Anyhow, I let off on water for the usual 3ish days, but it never really responded, until it then seemed to be underwatered, so I watered it again, and it perked up for about half the day before drooping again.

I started feeding with general organics last week, since Fox Farm usually does so well on it's own through most of veg, but I started to get a bit of yellowing on the lower leaves, as seen in the picture, and the yellowing has since stopped in its progression.

So assuming over watering at this point, and the droop having persisted for about a week, I decided it was maybe a moisture probem, I have never used this pot before. So I pulled the plant, and remixed its soil with a couple handfuls of perlite, in order to increase aeration, whilst pruning the roots and inspecting for root rot- of which I found none- and re potted. This morning the plant looked perfect! But now the droop is peeking back in...so I come to you guys...

My temps are right around 22-23C, and I grow under a 400W HPS, well ventilated, and use FF. Having added perlite to an already perlite-y soil, and with the symptoms of overwatering coming back, I'm absolutely lost.

Any suggestions, thoughts? Is it just stress from the repotting/pruning? Is it still the soil? I thought about drilling holes in the pot about halfway up, in order to further increase aeration. All of which is ridiculous as I live in CO and humidity/soil moisture is NEVER a problem.
 

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M

Mire

Member
And I'll beat everyone in saying that yes, there are holes in the bottom of the pot, and no I am not going to go into flowering until the plant has recuperated and is up for it.
 
tropicalcannabispatient

tropicalcannabispatient

Well-Known Member
U
Mire said:
So, this is beginning to get a bit frustrating. I was getting ready to go into flowering this week, but last week, my plant seemed to be over watered, so I held off. Anyhow, I let off on water for the usual 3ish days, but it never really responded, until it then seemed to be underwatered, so I watered it again, and it perked up for about half the day before drooping again.

I started feeding with general organics last week, since Fox Farm usually does so well on it's own through most of veg, but I started to get a bit of yellowing on the lower leaves, as seen in the picture, and the yellowing has since stopped in its progression.

So assuming over watering at this point, and the droop having persisted for about a week, I decided it was maybe a moisture probem, I have never used this pot before. So I pulled the plant, and remixed its soil with a couple handfuls of perlite, in order to increase aeration, whilst pruning the roots and inspecting for root rot- of which I found none- and re potted. This morning the plant looked perfect! But now the droop is peeking back in...so I come to you guys...

My temps are right around 22-23C, and I grow under a 400W HPS, well ventilated, and use FF. Having added perlite to an already perlite-y soil, and with the symptoms of overwatering coming back, I'm absolutely lost.

Any suggestions, thoughts? Is it just stress from the repotting/pruning? Is it still the soil? I thought about drilling holes in the pot about halfway up, in order to further increase aeration. All of which is ridiculous as I live in CO and humidity/soil moisture is NEVER a problem.
Click to expand...
u need to take pics with the hps off, i cant see shit
 
M

Mire

Member
Light's been off almost an hour, so that might be exacerbating the problem (due to normal drooping that occurs in absence of photosynthesis). But it's only been off for like 30 minutes, so not by much.
 

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grandvapor

grandvapor

Active Member
Those are big for veg...

They are going to be monsters, which leads me to.. Oxygenation. But, with all that perlite, I'm honestly a little on the fence. Are they root bound?
 
bubblenut

bubblenut

Well-Known Member
I have same issue now!!! Did on last grow too but got a mad harvest of sweet quality medicine! It can be droopy before a feed and then stay the same for 24hrs untill due for another feed when the leaves will be reaching up towards the light.... its as though i cannot find their sweet spot on feed times
 
J

JungleTime

Well-Known Member
Honestly.. That looks exactly like my plant when its under watered... Throw a gallon of just ph'ed water and see what happens. Under watering and over watering usually look exactly the same.
 
2ANONYMOUS

2ANONYMOUS

Well-Known Member
Number of things soil is to compact, But you transplated good idea ,VPD is out of wack , and most common issue Soil is to hot
 
DesertGrow89

DesertGrow89

Well-Known Member
JungleTime said:
Honestly.. That looks exactly like my plant when its under watered... Throw a gallon of just ph'ed water and see what happens. Under watering and over watering usually look exactly the same.
Click to expand...
Huh? An under watered plant will have leaves cupping and pointing more upwards than down, more like the leaves in my photo..
 
J

JungleTime

Well-Known Member
DesertGrow89 said:
Huh? An under watered plant will have leaves cupping and pointing more upwards than down, more like the leaves in my photo..
Click to expand...
http://www.bluesky-organics.com/heat-stress-over-watering-under-watering/

From everything I have seen, experienced, and read, they display similar symptoms. Under watering and over watering produce drooping leaves. Not leaves that point upward in my experience. Generally if its under watered you can feel the leaves and it will feel lifeless, while an over watered plant will be firm but just drooping as in it cannot hold its own weight.

http://lmgtfy.com/?q=under+watered+cannabis+plant
 
Craig1969SS

Craig1969SS

Well-Known Member
The only variable I picked up on in the beginning of your explanation was you started feeding fox farms a week prior. You seem to have everything covered. I wouldn't drill any holes in the side, areation isn't the cause. I'd say it's the nutrient solution, even though you've had experience with it previously. All the symptoms are there doc
 
Craig1969SS

Craig1969SS

Well-Known Member
Sorry to misquote, you said you used General organics as if it were fox farms. I still would look there.
 
M

Mire

Member
Craig1969SS said:
Sorry to misquote, you said you used General organics as if it were fox farms. I still would look there.
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Yeah, it's pretty old, but its just raw nutrient, the soil bacteria aren't picky :D

Like I said though, the yellowing on the underside has halted completely, so any nitrogen deficiency, which is what that really looked like, is gone.
 
M

Mire

Member
2ANONYMOUS said:
Number of things soil is to compact, But you transplated good idea ,VPD is out of wack , and most common issue Soil is to hot
Click to expand...
Soil compaction was my original guess, and so I transplanted, with the addition of perlite. But I still got the droop! I simply do not understand it at this point. My house is pretty cold throughout the winter (I'm cheap and heating is not) so, the grow op is between 21-23 during the day but will drop to 16-19 at night. But I've never had issues with night temps like that. All that happens is I get a whole lot of purp expression!
 
M

Mire

Member
DesertGrow89 said:
What is your humidity? What are you doing for ventilation? Do you have a fan blowing on your plants?
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I do not have a fan blowing directly on it, but I have a gnarly computer fan pushing at least 100 CFM through a tube on my light. The ambient temp in the box is always within 1 degree of the ambient temp of my room, and the intake is on the bottom of the box. Humidity is currently 17% (that rocky mountain thin air), so my vaporization pressure should be fiiiine.

At this point the only thing not perfect is night time soil temps. But cannabis is resilient and I can't imagine that's too much of an issue. So I'm just lost as fuck at this point.
 
DesertGrow89

DesertGrow89

Well-Known Member
Mire said:
Gonna take a fan and have it blow directly through the canopy, will give updates.
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You want a stem blowing on your plants for various reasons, it strengthen the stems which will support flowers as they pack one weight. It also reduces the possibility of molds and rotting, but looks like you have that covered as your humidity is quite low. Try to get your humidity a bit higher if possible.

What is the NPK ratio of the food you are feeding with?
 
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