how long you leave them out. when you bring them in?
I dont know about your weather as to what part of n.z you are from ,but because i bring my plants up indoors i usually harvest early ,as i have put them through the veg period ,and let the m flower a couple of weeks so when they do go outside they think fuck it is time to keep flowering as the hours are still short ,as in spring time ,i find once they have started flowering for a few eeks they dont revert to veg as the hours are still short.
but natural grown plants i normally plant in august or september ,and they are ready in may ,but i grow mainly sativa strains ,so they take longer ,i have smoked some good kiwi buds ,so good luck , it is some of the best smoke i have tried, dont know what strain ,but fucking nice.