I have a dozen plants that I have just started from regular seeds and are about 9" tall (just getting started). They are outdoors in dirt. Is there a way when they get a little bigger to *** them. We have a limited plant count here (4-6) and I do not want to go thru all the work vegging them and wait until the 2nd week of August (when they show *** around here) to cull the males. Thanks