An example of dia used as a prefix is in the word diagnosis, which means a thorough analysis of a disease. dia- through, throughout, across: diachronic, diagram
Blue spruce evergreen trees (Picea pungens) grow wild in Western North America in U.S. Department of Agriculture plant hardiness zones 3 through 8. This erect tree produces blue-green evergreen needles that are sharp to the touch. Blue spruces reach 30 to 65 feet tall, spreading 10 to 20 feet wide. With good care this slow-growing tree can grow up to 12 inches per year. Blue spruce trees grow well as showcase trees or as part of a windbreak. Examine the location of the blue spruce tree while it is still young enough to transplant.
Fill 4-inch square pots with the peat mixture. Leave the top 1/4 inch of each pot empty to make watering easier. Prepare a pot for each blue spruce cutting you wish to root. Gather 4- to 5-inch-long tip cuttings from the side branches of a young, healthy blue spruce tree. Snip the cuttings between two sets of needles using sharp pruning shears.