To care for a dwarf Alberta spruce, choose a planting site with full sun and well-drained soil, add compost to the whole, and keep the plant mulched. Water young trees regularly, and snip off any leggy limbs.
Place a dwarf Alberta spruce in an area with at least 4 feet of clearance on all sides and nothing overhead to give the plant room to grow. Choose a location with full sun. To improve soil drainage, mix a 5-inch layer of compost or organic material into the top foot of the soil.
Water the newly planted tree well, and add a 4-inch layer of shredded bark not only to keep the soil moist, critical for the tree's young roots, but also to inhibit weed growth. Make sure to leave several inches of room between the tree's trunk and the mulch to prevent rot.
Continue watering the tree regularly for the first couple of years during the growing season using a soaker hose or a drip system. After it becomes established, discontinue watering except in drought conditions.
For a potted Alberta spruce, trim the branches regularly for shape, and make sure the soil never completely dries out. Potted plants need more water, and the spruce requires daily watering during hot weather.