So grab that water! Buy a garden hose fitting like the one in the photo at a hardware store. Attach a garden hose, and put the other end on a thirsty plant.
Being the geek that I am, I got to wondering how much water this system produces. A few days ago when the temperature was 95 and the humidity was only 26%, I collected the water from the condensation line in a measuring cup. I was impressed to find I collected 0.7 gallons per hour!
Someone pointed out that this water doesn't have a lot of minerals in it, which is true, but it also doesn't have the nasty chlorine that comes out of the hose that's attached to the hose bib. It doesn't seem to hurt the plants. Here's my new Mexican Honeysuckle, about to get a nice drink.