Mildew And The Dew Point

I just saw a really interesting website on the Dew Point. This is the temperature at which the air's RH condenses into dew.

What struck me is that the dew point temperature is dependent on the temperature and relative humidity.

The Dew Point Calculator
http://www.dpcalc.org/

Here is another:

http://www.csgnetwork.com/moldrotcalc.html

This calculator is designed to give the approximate values and identify the conditions that would allow condensation to form, leaving vulnerability for mold, mildew or rot.

Click to expand...

Which brings me to why mildew is so unpredictable and why it can spring up in warm and cold weather.

Check it out.

The dew point can often be reached in the root zone because of cooler temperatures at the ground, and is a viable way of watering plants through natural condensation, if the soil/mulch is deep enough.

Dear TanzanianMagic,
I have been a lot about dew point. I can not wrap my head around it! What is it? technically?

RHingly yours,
M

MazeWL said:

Dear TanzanianMagic,
I have been a lot about dew point. I can not wrap my head around it! What is it? technically?

RHingly yours,
M

Click to expand...

Hi, sorry for the delay. The dew point is the point where the relative humidity in the air turns into dew/rain, basically. It changes with both the temperature and the relative humidity.

This is very relevant for weed, because when flowers are mature, they become very susceptible to humidity. It should be taken into account when it comes to frequency of watering.