Where do I get good rambutan grafts and what spacing should I plant?

Always plant grafted or budded rambutan, not seedlings, because seedlings are slow, variable, and many turn out to be poor male or low quality types. Good named clones grown in the region perform far better, so buy from a reliable horticulture nursery, a state horticulture department nursery, or research stations that supply true to type grafts. Spacing is usually wide because the trees become large, commonly in the range of around 8 to 10 metres each way, which works out to a fairly low number of trees per acre, but exact spacing depends on your variety, soil and whether you plan to manage canopy size, so confirm locally. Buy a mix that includes a good pollinizer, since fruit set depends on having some hermaphrodite or male flowering trees nearby. Inspect the graft union, choose healthy hardened plants, and keep the bill. Get final spacing and variety advice from your KVK or the nursery agronomist for your conditions.