Pedology is connected to growing
So you'll need someone who is all-knowing
About Oscar and Bert
Or just about dirt
When you cast your seeds for sowing.

Note: As Anu has reported in today's AWAD, "pedology" is "mostly used when referring to soils, and 'pediatrics' for children". But MSN Encarta provides only this definition:

peˇdolˇoˇgy [ pi dólləjee ] noun

scientific study of children: the scientific study of the physical and mental development of children

http://encarta.msn.com/encnet/features/dictionary/
DictionaryResults.aspx?refid=1861724558

Sesame Street Mural with Grover, Oscar, Twiddlebug, Bert, Dora and Boots...
http://www.allkidsmurals.com/sesamestreetpark.html