polycultures in Durban climate - Everton - KZN South Africa

Is there any data out there / experience - re plant species and guild design for this sub-tropical region of South Africa? Obvioulsy there is a ton of generic knowledge - but my experience is the micro-climate factor easily renders most info to the hit-and-miss category. I have been experimenting and generally bumbling along - are there any voices out there to trade info with?