I built my own Torterra deck, and I've found that it works perfectly fine without Vespiquen. Meganium's Power already removes a counter, and I run an all-out Castaway line to supply me with plenty of Sitrus berries to suppliment the healing. Being that Vespiquen's healing ability is an attack, and not a power, I find it to be too slow, especially adding on Vespiquen's very high retreat cost (you may not always have that Fluffy Berry, or Switch handy...). By the way, Roserade looks nice, but it is more trouble than it is worth. It eats up some of your energy, and does not have nearly as much HP as the other Pokemon you play (being Meganium ex and Torterra).
Oh, also Farmer, I still have not received your cards from our trade....
Oh, also Farmer, I still have not received your cards from our trade....