RedCrocus Green Pillar Columnar Pin Oak Quercus palustris 'Green Pillar', Narrow Tree for Gardens & Landscapes, Perfect for Small Spaces, Zone 4-8 2.5-3" cal B&BGreen Pillar' Columnar Pin Oak Quercus palustris 'Green Pillar' Description A tall, narrow deciduous tree featuring a distinctive upright growth habit, with densely packed, lobed green leaves that turn vibrant in autumn. Known for its columnar form, it makes a striking focal point in gardens and landscapes. Suggested Uses Ideal for narrow spaces, creating privacy screens, vertical accents, or specimen plantings in residential and commercial