Planting & Soil第 32 / 100 题
When planting a container-grown shrub, the top of the root ball should be placed at what level relative to the surrounding soil?
a.6 inches below grade
b.12 inches below grade
c.Buried under 4 inches of soil over the crown
d.At or slightly above the surrounding grade
解析
The top of the root ball should sit at or slightly above finished grade so the crown does not sit in water and settle too deeply. Planting too deep suffocates roots and can rot the crown or trunk. Slightly high planting allows for minor settling while keeping the crown dry.
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