The Colorado blue spruce grows at a slow to medium rate, from 12 to 24 inches a year. It will take 30 to 60 years to grow from seed to 60 feet tall. Blue spruce grows best with moist, well-drained, fertile soil and full sun. It is hardy in zones 3 through 7. To plant, dig a hole as deep as the root ball and 2-3 times as wide. Fertilize with phosphate and potassium for faster growth. A 2 foot tree can reach 5 feet in 5 years with good soil and moisture. It matures at 15-20’ tall and 6-10’ wide. Blue spruce is resilient with minimal care needs. Its conical shape and blue-green foliage make it very attractive.
How long does it take to grow a 6 foot blue spruce?
To plant, make a hole as deep as its root ball and 2-3 times wider. For faster maturity, fertilize with potassium and phosphate. Good soil and moisture can help a 2 foot tree reach 5 feet in just 5 years.
How tall is a 10 year old blue spruce?
It matures at 15-20 feet tall and 6-10 feet wide. This spruce needs minimal care. Its conical shape and blue-green needles are very decorative.