Re: Could You Please Help Me?

Any living been (plant ou animal) requires many different substances to 
live: vitamins, sugars, proteins, etc. In the case of plants, carbohydrates 
or oils are not strictly necessary since they can get their carbon by 
photosynthesis. But many other compounds are necessary.
Ions are very important. To grow, a plant needs Nitrogen, Potassium, 
Phosphorous, Magnesium... 
The point here is: these compounds (among many others) are present in 
different proportions in each of these liquids. Tea, is one of the bests, 
because of its an extract of leaves and, being so, contains many substances 
that are common in a plant. On the other extreme, water constains the 
smallest ammount of ions and other compounds (it would not taste like water 
if it had a lot of solutes). The other solutions are 
somewere between.
It is important to note that not only the ammount, but also the kind of 
solutes, are important to determine the growth of the plant. Each of these 
solutions (coffee, water, tea,...) has a different taste. This is because 
they have different types of solutes in the water. It is not a surprise 
that the plant grow at different rates in each condition.
Hugs,
Marco.