Define dia-. dia- synonyms, dia- pronunciation, dia- translation, English dictionary definition of dia-. or di- pref. 1. Through: diachronic. 2. Across: diatropism. or prefix 1. through, throughout, or during: diachronic. 2. across: diactinic. 3.
Print This Page. Baby Blue Eyes Spruce is a conical-shaped, fully branched selection of Colorado Spruce with a uniform growth habit and intense blue needles. On the average it will grow upward about 8 inches per year compared to some Colorado Spruce that can grow as much as 12 to 18 inches upward per year. Since it is a grafted plant , the growth rate can vary depending on the rootstock (understock) that it is grafted on to.
Top Growth Rates. The Sitka spruce dwarfs its cousins in maximum attainable height and rate of growth. During its 500-year life, a Sitka spruce will reach between 160 and 220 feet, with 60-inches-per-year growth rate until it reaches maturity. Coming in second with an average growth rate of 30 inches annually, the Norway spruce has an impressive yet manageable height between 40 and 60 feet. With a branch spread of 25 feet across, landscape designers will often arrange Norway spruces to provide privacy and wind blockage for houses on larger lots.