Oak, Scarlet OakScarlet Oak is a large native deciduous tree with a straight trunk and an open rounded crown. The deeply cut dark green foliage with bristle tipped lobes turns scarlet in fall. The acorns have a deep bowl shaped cups that cover half the acorn. Best grown in full sun and sandy, dry to medium well drained acidic soils. Quercus coccinea supports a wide variety of moths and butterflies, including: the Imperial Moth, Banded Hairstreak, Edward's Hairstreak,