Yes, you still need it, provided you're sure there are no males or hermie plants to scatter pollen around. The branches still need exercise to support the new growth which will, with luck, be quite heavy.As long as there's a decent breeze you're good. They don't need to be swaying like in a hurricane, just a nice breeze to keep them moving a bit. Oscillating fans obviously are best as they easily change the direction of the air movement.