A very slow-growing, dwarf, nearly perfectly globose selection of Eastern White pine with fairly dense branches and species-typical silvery Blue-green needles. After 10 years of growth, a mature specimen will measure 18 to 24 inches (45 – 60 cm) tall and wide, an annual growth rate of 1.5 to 2 inches (3 – 5 cm). As is true with many densely branched, dwarf conifers, custodians of ‘Sea Urchin’ must be diligent about cleaning out dead needles from the plant’s interior on a yearly basis. Old, decaying needles, over time, will begin to decay, inviting fungal issues.