Pot Size: 1 gal
Accepted Scientific Name:
Abies concolor 'Compacta'
Origin and Habitat
Abies concolor, commonly known as the white fir, is native to the mountainous regions of the western United States, including the Sierra Nevada, Rocky Mountains, and parts of the Southwest. These trees are found at elevations between 3,000 and 10,000 feet, thriving in well-drained, rocky soils with cold winters and moderate summers. The 'Compacta' cultivar was selected for its dense, slow-growing, and compact form, making it suitable for small gardens, rockeries, and containers. While it shares the adaptability of the species, 'Compacta' is a cultivated variety developed for ornamental use.
Description
Abies concolor 'Compacta' is a dwarf evergreen conifer that typically grows 24 to 36 inches tall and wide. It forms a tight, rounded mound with soft, silvery-blue to blue-green needles that curve slightly upward. The needles are fragrant when crushed and arranged in a horizontal manner along the stems. While flowering is minimal and rarely seen in this cultivar, mature plants may occasionally produce upright, barrel-shaped cones in shades of green to purple. Its compact size, soft texture, and attractive color make it an excellent focal point in smaller landscapes.
Cultivation
Zone USDA Zones 4–7
Temperature Tolerates -30°C to 25°C; prefers cool to moderate climates.
Growth Rate Slow-growing; approximately 2–3 inches per year.
Soil Requires well-drained, slightly acidic soil enriched with pumice to promote aeration and prevent root rot.
Watering Water regularly during the first few years to establish roots. Once established, moderately drought-tolerant. Allow the top layer of soil to dry between waterings.
Fertilizing Use a balanced, acid-loving plant fertilizer every 2–3 weeks during spring and summer. Avoid feeding in winter.
Light Prefers full sun but tolerates partial shade. Best needle color develops in full sunlight.
Pests and Diseases Generally pest-resistant; occasional issues may include aphids or needle cast in poorly ventilated or overly damp conditions.
Propagation
Propagated primarily by grafting onto standard Abies concolor rootstock to preserve dwarf form. Cuttings are rarely successful due to slow rooting.
