Question About Coco/ Watering

bseabuds

Member

A general question about coco and watering. I have searched the forums on this site and others, and there seems to be little agreement on a standard watering schedule. What I mean by this is, some people say they get by watering once every four days, and others say they get by watering once every other day, and still others say they water twice daily with excellent results.

I understand that environment, amendments to the medium, nutrients, and any other number of variables play a key role in determining how often to water.

I understand also that coco is a medium that is best kept moist at all times, that if it is allowed to dry out there is risk of raising the salt content to toxic levels.

What I want to know is: are there any visual cues on the plant that indicate the plant needs water?

To clarify:

In soil, the leaves on a healthy plant that has just been watered will reach for the light in a 'Y'. When the leaves begin to level again, that is an indicator that the plant will need water soon.

Can this same visual cue be used as a standard of when to water for coco as well? The reason I ask is that if coco is best kept moist, then the roots will always have access to water, and the leaves will (ideally) always reach for the light. Correct?

And if the leaves do begin to level, is this an indicator that the medium has become too dry to the point of danger (i.e. toxic salt build-up)?

This all may sound a bit obsessive, but if plants are anything like humans, then the problem (deficiency or pH imbalance in plants: virus/ infection in humans) will exist in the system well before the plant gives any visual signs of distress (hours or days in plants: days or weeks, sometimes months or years, in humans).

I'm new to using coco, and would like to know more about it. For any sound advice and knowledge, much thanks in advance; it's appreciated.


 
I water my coco every 4-5 days... and the reason for this is because in nature it doesn't rain everyday.. as long as you get water runoff when you water the salts wont build up

The biggest problem i get with coco is nutrient deficiency's like nitrogen magnesium calcium and potassium
 

MYOB

Well-Known Member
The best indicator for me has always been feeling the weight of the pot. Once you get an idea of what it feels like fully watered and almost bone dry, you can tell when it needs water by the lightness.
 

bseabuds

Member
And when you water, do you water to 20% runoff each time?

3 gallon pot: .75 gallon water?
5 gallon pot: 1 gallon water?
7 gallon pot: 1.5-2 gallon(s) water?
10 gallon pot: 2-2.5 gallon(s) water?

If coco stores water well, and maintains air-pockets for the roots, and if it flushes easily, then will the medium hold only the amount of water it needs (i.e. *hypothetical* pass five gallons of water through a 5 gallon bucket, and the coco will only hold the last gallon or so, and the rest will have been pushed out)?
 

propertyoftheUS

Well-Known Member
Yes, every medium is different when it comes to water retention, but every medium will only hold a said value of water giving validity to your hypothesis. I've never personally grown in coir but it's not as easy as 3 gallon pot: .75 gallon water=20% runoff, depends on how much room your roots are taking up in said medium, how much moisture was in the medium prior to watering,ect, ect. 20% sounds like a good number, just add the water at a slow but constant rate and measure your run off and subtract from your water can and then get your percentage. It's not an exact science but as MYOB pointed out a very easy way to tell when to water is by the weight of a fully moist medium<<< after the 20% runoff, and the weight of a dry medium<< get an extra container filled with medium, water it until saturated, let it dry out, should within a few days, and use that as your control,dry sample, container, try to account for the weight of the plant and root system. It's a lot easier done than what I just typed after you do it a few times you won need a control container. Hope this helped some. Good luck!
 

beuffer420

Well-Known Member
A general question about coco and watering. I have searched the forums on this site and others, and there seems to be little agreement on a standard watering schedule. What I mean by this is, some people say they get by watering once every four days, and others say they get by watering once every other day, and still others say they water twice daily with excellent results.

I understand that environment, amendments to the medium, nutrients, and any other number of variables play a key role in determining how often to water.

I understand also that coco is a medium that is best kept moist at all times, that if it is allowed to dry out there is risk of raising the salt content to toxic levels.

What I want to know is: are there any visual cues on the plant that indicate the plant needs water?

To clarify:

In soil, the leaves on a healthy plant that has just been watered will reach for the light in a 'Y'. When the leaves begin to level again, that is an indicator that the plant will need water soon.

Can this same visual cue be used as a standard of when to water for coco as well? The reason I ask is that if coco is best kept moist, then the roots will always have access to water, and the leaves will (ideally) always reach for the light. Correct?

And if the leaves do begin to level, is this an indicator that the medium has become too dry to the point of danger (i.e. toxic salt build-up)?

This all may sound a bit obsessive, but if plants are anything like humans, then the problem (deficiency or pH imbalance in plants: virus/ infection in humans) will exist in the system well before the plant gives any visual signs of distress (hours or days in plants: days or weeks, sometimes months or years, in humans).

I'm new to using coco, and would like to know more about it. For any sound advice and knowledge, much thanks in advance; it's appreciated.


i usually go by weight pick it up right after water then after a day see how she feels once I feel my pot is getting "light" I usually watered again. Some people add perlite to the coco depending on how much you add will affect the amount of watering needed. as well as health of plant ect ect. Once in full bloom, when I didn't use any perlite I could go two days in between waterings. Just have to play with it and find the comfortable spot for the time to water.
 
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