The Connected Discourses: SN 1.47 - Vanaropā Sutta (Those Who Plant Trees). 

NOTE: If you like to support Bhante, you may consider donating via:
gofund.me/9d16...
Bhikkhu Candana lives and continues his Dhamma work without the support of a Buddhist community or a monastery, but survives thanks to the occasional donations he receives to obtain his food, shelter, transportation, and medicine.