properly establishing dwarf globe blue spruce

Asked April 10, 2016, 10:11 PM EDT

Hi there,
We just planted two large-sized dwarf globe blue spruce shrubs in our front yard (3ft diameter). West facing, in urban Denver, flanking our porch, partial shade in summer (cottonwood tree in yard as well). We spent 200 bucks a pop on these guys, so we really want to make sure we don't kill them. We could use some advice on how often to water them during this first month, then for the next year as they get established. We followed CSU guidelines for planting (hole size, amending soil, etc.) but we've gotten conflicting info from garden center employees regarding water needs (some say they need little water, some say they need more...) Any advice would be welcome. Thanks!

Denver County Colorado

1 Response

Use light, frequent irrigation while your plants establish; how much depends on the soil (drainage), your west-facing site, and, of course, the weather.

Check moisture levels by feeling the rootball with one finger to about 1-2 inches deep. If the ball feels wet, don't water. If it feels dry, add enough water to soak in 6-8 inches. You can use a screwdriver to see how deep you have watered. When the soil is dry, the screwdriver should be hard to push in; when it's wet it will be easy. If you hit a hard area about 4 inches down, it means you haven't watered deeply enough.

Here's a link that will give you some numbers to get started: http://www.ext.colostate.edu/mg/Gardennotes/635.html