Moringas grow fast when given the chance and put up with a lot in the meantime. Here is one story about Moringa drouhardii. I collected seed in southeastern Madagascar in 1997. I planted the seeds in 1998 in a greenhouse in California, while studying the way that moringa stem anatomy changes in development (see Olson and Rosell 2006 and Olson 2007). The plants would grow up to the ceiling so we would whack them back nearly to ground level every year (see the two photos below).
After years and years of this treatment, the poor plants keep gamely growing back, but got a series of collars on the stem from the pruning scars. I took one such Moringa drouhardii to Mexico in 2006, after about 5 years of brutal pruning, and I kept it in my yard in Mexico City. Mexico City is at over 2000 meters above sea level. Moringa drouhardii survives there, but they are not happy. The plant leafed out every year and would grow about 5 cm. Finally, in 2010 I planted it in the ground here at sea level in Jalisco in September 2011. It was already a big fat tree 6 months later.
These plants are now flowering and we hope for seed soon. We'll keep you posted.
Dr. Mark E. Olson is a researcher at Mexico's national university and an expert on the biology of the genus Moringa