Leaf area index and vegetation indexes are used in production ecology since the 1960s. The relative foliar areas on wild seedlings of six tree species were estimated by four vegetation indexes at the Honiara Botanical Garden, and their accuracy determined by their closeness to maximum likelihood classification outcomes of the original images. Vertical natural colour photos of the wildlings at one meter above the ground were taken with a 20.1 mega-pixels Nikon camera. The RGB channels were reformatted, called into R and exported to Ilwis 3.8. The results show differences between the means of vegetation indices for the six species and between the species response to them
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