Quercus, palustris, Green Pillar - #30

Size: Medium to large deciduous tree, typically 50-60 feet tall and 12-15 feet wide at maturity (tightly columnar, narrow form).

Branches: Stiffly upright and ascending, creating a fastigiate, densely columnar structure with strong vertical branching.

Leaves: Lustrous dark green, deeply lobed (typical pin oak shape), holding dense, clean foliage through the season.

Flowers: Produces insignificant green catkins in spring.

Bark: Grayish, smooth when young, developing furrowed texture with age.

Habitat:

Highly sought after for its ultra-narrow, columnar habit and urban adaptability, commonly used as a street tree, in tight spaces, parks, formal screens, alleys, or as a vertical accent in landscapes, where it provides a striking, space-saving silhouette, wildlife value via acorns, and reliable performance in challenging sites like wet, compacted, or urban soils.

**Tree arrives dormant in 30-gallon pot**

Tree Care:

Planting: Well-draining to moist soil preferred, but highly adaptable (tolerates wet sites, poor drainage, and occasional flooding); full sun, proper spacing (at least 12-15 feet for mature width).

Soil: Prefers slightly acidic to neutral pH (avoid alkaline to prevent chlorosis); adaptable to clay, loam, or urban soils, amend with organic matter if needed for best results.

Watering: Keep soil consistently moist during establishment; tolerant of wet conditions and moderate drought once established—avoid prolonged dry spells when young.

Fertilizing: Apply balanced, slow-release fertilizer in early spring.

Pruning: Prune minimally in late winter to remove dead wood or maintain form; its natural tight columnar habit requires little shaping.

Pest and Disease Control: Monitor for issues like oak wilt, borers, scale, or chlorosis (in high pH soils) and apply controls if necessary; generally tough and low-maintenance.

Mulching: Use mulch to retain soil moisture and suppress weeds, keeping it away from the trunk.

Foliage: Known for its rigidly columnar, space-efficient form with lustrous dark green summer leaves that turn outstanding deep red to scarlet or maroon-red in fall, providing clean, vertical drama and reliable seasonal color in modern or urban landscapes.