The two main places I've gotten both Moringa and Leuceana seeda from are ECHO Seedbank www.echonet.org
, and from the folks at World Hunger Relief www.worldhungerrelief.org
. I've noticed Moringa seeds are easier to find with several other online sources such as seedman.com, or even eBay.com. Shop around though, and of course bulk is always less expensive.
I start seeds in March or April inside. They get transplanted out when seedlings are between 6" and 12" tall - around May. I am going to try propagating from cuttings this year.
Note that both of these plants are going to do best in more southern locations - I've seen them doing well up near Dallas, TX, but I am not sure how much further north they will be useful, unless in a greenhouse situation of course. BTW, I believe that greenhouses are a critical element to almost every food production system regardless of where you are. Every bio-region has different reasons why to use greenhouses. While researching sustainable living in Central America I was stunned to see how much they used green houses - to keep the water off the gardens
. Greenshouses are not a sustainable forever technology, but there is a ton of old sliding glass doors (made of safety glass) available to use for a long time.
I am looking forward to living in a colder climate so I can explore plants, animals, and strategies specifically for growing in those conditions, but that is another project..
Always on the lookout for good home businesses, I think propagating both leuceana and mornnga is a niche where you could do well. Useful or food producing plants is a good business overall.