Q.What type of ground cover seed will grow best for laterite slope?
What type of ground cover seed will grow best for laterite slope?

I don't have direct experience with this, but from my reading, laterite slopes can be stabilized or rehabilitated using some ground covers and some small shrubs. Look into Stylosanthes hamata and the other plants mentioned in the attached file. There may also be tropical grasses that will grow on this type of soil. Consulting a local expert (for example at an agricultural university) might be the best option
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Will you repost and include where you live, how large is the area, how steep is the slope, how many hours daily of direct sunlight does it get and how you plan to keep seed from washing out in heavy rain. Plants in the USA are on sale now and you may be able to put in some plants.