Thuja occidentalis 'Degroot's Spire' Degroot's Spire Cedar Description Dark green twisted soft foliage. Growth Habit: Narrow, compacted, columnar to pyramidal Mature Height: 8' to 12' (240 cm to 360 cm)Mature Spread: 3' to 4' (90 cm to 120 cm)Growth Rate: Slow More Details Sun Exposure: Full Sun to Partial ShadeCold Hardiness Zone: 3Juglan tolerantTolerate moist soilLandscape Uses: Hedge, privacy screen, foundation planting or garden accent