To grow a large amount of Moringa green matter (leaves and green stems), techniques have been developed for growing Moringa intensively. The seeds are planted relatively close together so that a large number of trees can grow on a small amount of land.
With Irrigation and Fertilization
A spacing of 10 X 10 centimeters (4" X 4") has been recommended when growing Moringa intensively as a crop. Moringa green tops can be harvested every 35 days. Dividing the field into 35 parts, and planting one part a day for 35 consecutive days, would allow daily harvesting on a 35 day cycle.
Irrigate and fertilize according to your needs.
With No Irrigation or Fertilization
If not irrigating or using fertilizer, a spacing of 40 centemeters (16") between rows and 5 centimeters (2")between plants has been recommended. Cut every 60 days at about 25 centimeters (10") above the soil.
For more information:
Amaglo NK, GM Timpo, WO Ellis, RN Bennett. Effect of Spacing and Harvest Frequency on the Growth and Leaf Yield of Moringa (Moringa oleifera Lam), a Leafy Vegetable Crop. Proceedings of "Moringa and other highly nutritious plant resources: Strategies, standards and markets for a better impact on nutrition in Africa." Accra, Ghana, November 16-18, 2006
http://www.moringanews.org/doc/GB/Papers/Amaglo_Newton_text_GB.pdf