you water.... WHEN THE TREE NEEDS WATER ....
too much.. is just as bad as too little ....
THE ONLY WAY TO KNOW ... in your soil.. in your garden.. is for you to INSERT YOUR FINGER.. and find out if the soil.. UNDER PROPER MULCH is hot or dry ....
if it is dry.. water it .. deeply.. so it gets thru the whole root system .... dig a small hole.. to find out if you are actually getting water down where you planted the roots ....
if it is hot .. it will be dry tomorrow ... as one of the purposes of the mulch.. is to keep the soil cooler ....
over-watering.. in soil that does not drain properly ... will kill a tree faster than under-watering.. IMHO ....
in my mineral sand.. i could dig a hole the size of a 5 gal bucket.. and barely get it filled as the water would drain away.. and when the soil was finally saturated enough to fill the hole.. once i turn off the water.. it will be gone within minutes.. that is the type of drainage most trees like... and i still ONLY water newly planted trees... deeply.. once every two weeks ...
the thought that any tree needs PROPER watering more than once a week.. is questionable .. unless you are not doing it properly ....
good luck
ken
ps: forget about the first one.. it was a tree 'tard.. it has no relevance to this one.. except in how you might be watering it .... or how you planted it.... etc ...
Q
