posted 4 years ago
Vetiver grass is the premier plant for what you are describing. It has incredibly deep fibrous roots, grows into a very very dense hedge at ground level, and does a superb job of trapping surface sediment to build up terraces. It is even "well behaved" - it won't escape or run from where you plant it, and does not produce fertile seeds. One clump once established can be divided to make many hundreds of new slips for planting. The grass can be chop and drop cut once or twice a year, and is an excellent mulch around crops.
It is vulnerable to cold, however, so you will need to check if it is viable in your region.
Moderator, Treatment Free Beekeepers group on Facebook.
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