Answer: Unfortunately it is very difficult to evergreens year round outdoors in containers in your area. The reason is that the roots are not as well insulated as they would be if planted in the ground. Often, the evergreens we see around the city are replaced annually, usually in about March. But, you could try dwarf Alberta spruce if you are willing to experiment. Use a large sized container with drain holes in the bottom and plant into a good quality soil mix formulated for container plants. Water as needed to keep the soil evenly moist like a wrung out sponge whenever it is not frozen. Use your finger to dig into the soil and check if you need to water -- the frequency will depend on the weather. Good luck!
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