ring-porous wood

Ring-porous wood is a classification for hardwoods based on the size and distribution of pores within their growth rings. In ring-porous woods, such as oak and chestnut, the pores formed in the early spring (earlywood) are significantly larger than those formed later in the growing season (latewood). This contrasts with diffuse-porous woods, where pores are roughly uniform in size and evenly distributed throughout the growth ring. The larger earlywood vessels in ring-porous trees allow for more rapid water conduction. This characteristic is important in determining a wood's suitability for certain applications, like white oak for whiskey barrels due to its lack of tyloses, which are cellular ingrowths that can block vessels.12