I am in Bob Logan's session. Sorting the Soils is what he is talking about right now, and being "cultivatable". Years ago when I was reading his stuff, Bob was using human reproduction terminology to describe the church planting process. Seems like he has switched to organic farming metaphors now to say the same thing - which is also a good way of seeing it. Some soils are hostile, resistant, passive, cultivatable, receptive and ready. Most pastors and ministry people spend time with the passive and not with the receptive.
Well done, Bob. METAPHORS be with you! Bob's group is called CoachNet.