sorry havent been on in while. ya asked about c99 crosses outdoors. I have grown c99 and c99 x grapefruit outdoors in N Illinois both finishing in time around early october. Best topped w/many cola's or bend early creating tons of cola's or outdoor screen of green type method. Unless planting later in summer, sea of green w/many 1 cola plants(like all strains w/fat dense cola's) watch out for mold in fall bending helps reduce rain being trapped in leaves/buds. early planting almost 1 pound late planting(depending when of course) 2-3 oz. good luck when harvesting let me know k? you should smoke me up w/that dankass outdoor! the GF x c99 is excellent indica/sativa high. c99 alone is a very sativa up high (dont plan on sleeping but good 4 shows/bars)