In another thread I was reading a month or two ago, someone mentioned when their RH was too high they were seeing drooping. Not sure if thats an issue, just trying to throw ideas out.
Why leaves are dropping like that (pictures)
- Thread starter Just done
- Start date
- Joined
- Sep 15, 2016
- Messages
- 27,301
- Reputation
- 20,316
- Reaction score
- 110,689
- Points
- 0
- Currently Smoking
- Dabs of Rosin.
There are several things that can contribute to droopy leaves. First of all it is water weight and gravity that is causing the droop. The leaves have more water weight than they can hold up. Several things can cause this to happen. You just watered/fertigated and the plant was thirsty taking water in faster than it can transpire it. Water leaves the plant through a process called transpiration. Little "holes" in the leaves called stomata "exhale" the water moisture out of the plant through the stomata. If the RH is too high or too low in relation to the ambient temperature the stomata will close to protect the plant from over transpiration or too high of heat. This backs the water up in the leaf and drooping is a result. It can also happen if a plant is in need of some nutrient that is not present in the root zone in a high enough PPM. The plant absorbs more water in an effort to get the nutrient and again a droop will result.
Out of balance nutrients not providing the building blocks for strong branches. A little added silica might help.
Then there may be a genetic propensity for drooping or the lights are not strong enough to encourage the leaves to stand up.
So as you can see it is not just one thing that can cause droopy leaves. I have never seen it stop a plant from making it to harvest.
Out of balance nutrients not providing the building blocks for strong branches. A little added silica might help.
Then there may be a genetic propensity for drooping or the lights are not strong enough to encourage the leaves to stand up.
So as you can see it is not just one thing that can cause droopy leaves. I have never seen it stop a plant from making it to harvest.
The light is strong. But it’s kinda high. Like 80cm from tops, (530samsung led watts) I will try to water not 800ml every second day. But like 400 ml every day.There are several things that can contribute to droopy leaves. First of all it is water weight and gravity that is causing the droop. The leaves have more water weight than they can hold up. Several things can cause this to happen. You just watered/fertigated and the plant was thirsty taking water in faster than it can transpire it. Water leaves the plant through a process called transpiration. Little "holes" in the leaves called stomata "exhale" the water moisture out of the plant through the stomata. If the RH is too high or too low in relation to the ambient temperature the stomata will close to protect the plant from over transpiration or too high of heat. This backs the water up in the leaf and drooping is a result. It can also happen if a plant is in need of some nutrient that is not present in the root zone in a high enough PPM. The plant absorbs more water in an effort to get the nutrient and again a droop will result.
Out of balance nutrients not providing the building blocks for strong branches. A little added silica might help.
Then there may be a genetic propensity for drooping or the lights are not strong enough to encourage the leaves to stand up.
So as you can see it is not just one thing that can cause droopy leaves. I have never seen it stop a plant from making it to harvest.
- Joined
- Sep 15, 2016
- Messages
- 27,301
- Reputation
- 20,316
- Reaction score
- 110,689
- Points
- 0
- Currently Smoking
- Dabs of Rosin.
It is not how much you are watering but more like when.
What you need to learn about watering will come with practice. Here are the basic rules: Never let the soil dry out. Soil and or coco can become hydrophobic if allowed to dry. This means it repels water. This in turn will create dry pockets in the soil and roots there will die. If your soil - coco have accidentally dried out use a surfactant to help re-wet it. I like yucca powder. Don't let soil remain soggy by watering too much too often. Root rot, damping off, molds, fungus gnats and other problems start in soggy soil. When you do water water the entire pot. How to learn when to water starts before you plant the seed. Fill your container with fresh soil/coco and weigh it (heft it) this is the lightest weight and consider it a dry pot. Now slowly water until the soil/coco will no longer absorb the water and run-off begins; weigh the pot (heft it) this is the maximum water, the wettest the pot can get. The difference between wettest and driest is the maximum water weight, for ease of explanation lets just say the water weighs 20 pounds. When the pot loses 10 pounds (half of the water weight) it is time to water again. There is an art to watering. Coco can be fertigate many times a day if you want to continually present fresh balanced nutrients to the roots. Begin fertigation 2 hours after lights on and end it 2 hours before lights out.
What you need to learn about watering will come with practice. Here are the basic rules: Never let the soil dry out. Soil and or coco can become hydrophobic if allowed to dry. This means it repels water. This in turn will create dry pockets in the soil and roots there will die. If your soil - coco have accidentally dried out use a surfactant to help re-wet it. I like yucca powder. Don't let soil remain soggy by watering too much too often. Root rot, damping off, molds, fungus gnats and other problems start in soggy soil. When you do water water the entire pot. How to learn when to water starts before you plant the seed. Fill your container with fresh soil/coco and weigh it (heft it) this is the lightest weight and consider it a dry pot. Now slowly water until the soil/coco will no longer absorb the water and run-off begins; weigh the pot (heft it) this is the maximum water, the wettest the pot can get. The difference between wettest and driest is the maximum water weight, for ease of explanation lets just say the water weighs 20 pounds. When the pot loses 10 pounds (half of the water weight) it is time to water again. There is an art to watering. Coco can be fertigate many times a day if you want to continually present fresh balanced nutrients to the roots. Begin fertigation 2 hours after lights on and end it 2 hours before lights out.
Can it be as of to much air in the tent ? As the thing I use to blow fresh air in the tent is more powerful then the sucking out . And my tent is like a ballon all the time.
I may be overwatering after all. Sometimes when I water I get full plate till the top of run off. And it can’t run off more. So stays in the pot with the root which makes it overwater ? And I have some perlites turned green from white on top of the soil.
- Joined
- Sep 15, 2016
- Messages
- 27,301
- Reputation
- 20,316
- Reaction score
- 110,689
- Points
- 0
- Currently Smoking
- Dabs of Rosin.
No, That will not cause drooping unless it is causing RH to be too low or too high.
If you need to be stealthy you will need negative pressure in the tent so all air is leaving through the charcoal filter during flower.
Do not allow the bottom of the pot to sit in run-off. Put the plant up on a stand over the drip tray and remove any run-off to waste (outdoor garden). If you do not you risk lock-out from salt build-up in the pot and/or root rot from anaerobic conditions at the bottom of the pot.
If you are getting an algae growth on the perlite cover it from light. Glue some foil on a thin sheet of Styrofoam and place it foil side down white side up over the top of the pot. Make sure it is not incontact with the media in the pot. You should only need this until the plant shades the top of the pot.
You're in coco? Can't overwater.Excess water will simply run off.Do you gives nutes every watering ? you should.
I'm in 3 gals fabric pot and i give about 1.5 liter twice a day.
I'm in 3 gals fabric pot and i give about 1.5 liter twice a day.
No my humidity is like 60%. But I kept all the run off all the time in plates for like till another day until it dry or pot sucks it . Maybe that’s the problem. And plants already give shade to the medium.
Yes coco. And yes nutes every time. Never gave just water. So might be that I leave the run off to sit in the plate while the bottom of them pot is wet to
