Hi, Kassy! Welcome!
I googled your plant
's name, and conveniently somebody on Gardenforum asked a question about its care in 2004, and somebody else gave a great link that was a little more informative about watering than that label.
for the Gardenhelper forum thread, and here
for the plant
Is this a science fair project?
I think by reading the plant
information, the measure of water you use will depend on the size pot your plants
are in, and you'll have to determine that one by recording how much water you add until it looks right according to the plant
information at the above link, and then make sure all the plants
get the same amount of water...
Hope this helps - best wishes!