- When mature, the seed pod may reach to 20 inches in length and contains 15 to 20 large, winged seeds. M. pterygosperma seed pods have a number of uses, depending on their development stage. When young, they are cooked and eaten, much like green beans. They are sometimes pickled and are also a common ingredient in Madras curries. As the pod ages, it turns hard and woody. At this stage the seeds are pressed for oil that is used primarily to lubricate machine parts, but also to make soap and salad oil. The resulting seed cake is processed into fertilizer.
- M. pterygosperma thrives in subtropical to tropical regions. Ideal seed germination conditions include temperatures between 77 and 86 degrees Fahrenheit and 40 to 80 inches of rain per year. The tree grows in a wide range of soils, including clay as long as it isn't kept continuously wet. To flower and set pods, it needs full sunshine, all day.
- Seeds from white seed pods are generally not viable, so use seeds from black or brown pods. Because the M. pterygosperma produces a long taproot, scientists at the University of Hawaii suggest that you sow the seed directly. Prepare the seedbed to a depth of 10 inches by digging up the soil and adding 3 inches of compost or rotted manure. Plant the seeds the same depth as the seed's width and keep the soil moist during germination. Under ideal conditions the M. pterygosperma seeds germinate within 2 weeks. The resulting tree generally sets seed pods the first year.
- Pinch 1 inch from the tip of the M. pterygosperma seedling when it reaches 3 feet tall. This encourages the tree to produce lateral branches. Begin applying fertilizer at this time. A 1- to 2-inch layer of well-rotted manure around the base of the tree will suffice at this early stage. Keep the soil moist as the roots grow. The seedling may appear to stop growing at some point as it puts its energy into producing the tap root.
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