Water on leaves

[superultramega]

I've seen this for years and I have no idea what causes it.

I run a couple E&F tables humidity around 55%. It isn't condensation as the room is climate controlled so as not to significantly drop in temperature overnight. I've also noticed it under 24/0 lighting so that's out.

It seems like the leaves themselves just let out water.

Anywho, it hasn't caused any problems I'm just curious as to the cause.

 

[Outportgrower]

Condensation, respiration. When the leaves come into contact with another they are not able to transpire properly due to the contact. Not a big deal, but something to watch out for and make sure you move things around if you do not have enough air flow to have it happen on it's own. This is something that you really need to keep on-top of during flowering to prevent the potential of mold or bud rot.

 

[superultramega]

That's what I was thinking. I checked in this morning and saw a little droplet on the end of a leaf which was partially covered by another. When I separated them the water was all along the lower leaf where it was covered. This actually prompted the question.
I have plenty of airflow and have never once had any mold issues. IIRC this goes away somewhere before the second half of flowering in my setup.

I like the idea that my girls are moving so much water through them that it literally comes out in droplets on the leaves

 

[Avon Barksdale]

mine do this also and my room RH has never gone to 50 ususally stays around 38-44

 

[FreezerBoy]

I like the idea that my girls are moving so much water through them that it literally comes out in droplets on the leaves

It's just condensation. The moisture is from the air, not the leaves. Give the stems/leaves a good shake and consider trimming a fan leaf or three.

 

[buzzmobile]

Word of the Day

Word of the Day

Guttation:

the exudation of liquid water from the uninjured surface of a plant leaf

Guttation explained

 

[FaderVader]

nice good info

 

[superultramega]

It's just condensation. The moisture is from the air, not the leaves. Give the stems/leaves a good shake and consider trimming a fan leaf or three.

As I explained the conditions are not right for it to be condensation. I should also note that this isn't all over the plants. In a 4x8 area I'll see maybe five spots that have water droplets on them. And they are always high on the canopy under the more intense light.

Guttation:



Guttation explained

Awesome. That is exactly what is happening. One more bit of knowledge.
Thanks

 

[Mist]

The only thing to watch out for when they do that is leaf burning. The water droplets can act like little magnifying glasses and cause spot burning.
I get this in my garden too and it has never been an issue. I just give them a little shake and the water is gone.

 

[superultramega]

I've heard that but I've never seen a problem with any lensing and burning from the droplets. I find this a little unusual as I run 1kw lights exclusively at around 6-8 inches from the top of the canopy.
When I see them I simply touch them and they are gone in minutes. But I don't actively look for them to clear them out.

 

[Mist]

I usually don't have any problem with them either, but I did find one burned spot just yesterday. That is why I mentioned it on this thread.

 

[buzzmobile]

The only thing to watch out for when they do that is leaf burning. The water droplets can act like little magnifying glasses and cause spot burning.

I have to disagree with water droplets acting as magnifying glasses. If that was the case every leaf on every tree would burn after every rain shower. The focal length of a water droplet on a leaf makes it impossible for the droplet to burn as a magnifying lens. Now if there are dissolved salts in that droplet it may burn the leaf as it evaporates.