What Soil Is Best for My Korean Spice Viburnum?

Outdoor Site Selection and Soil Preparation

• Korean spice viburnum performs best in sites with rich, woodsy soil and partial- to full-sun exposure. Though Korean spice viburnum grows in locations that get as little as three to four hours of direct daily sun, they produce the most spring blossoms when they receive direct sunlight for six or more hours per day. To improve your soil's nutrition and drainage, work in at least 20 percent rich organic matter before planting. Till 4 inches peat moss, 3 inches composted leaves and 2 inches composted pine bark into the soil to a depth of 10 to 12 inches.

Outdoor Planting and Care

• Careful planting practices help ensure the long-term health of your Korean spice viburnum shrub. Dig a planting hole for the shrub that is twice the width of the nursery container; this makes it easier for the shrub to spread its roots and establish itself in your home landscape. Plant the Korean spice viburnum shrub at the same depth that it grew in its container to avoid cultivation complications such as crown rot. Korean spice viburnum prefers moist, but well-drained soil; water the shrub weekly while it is actively growing and blooming. Provide the shrub with up to 1 inch of supplemental irrigation each week. Feed Korean spice viburnum each year with a balanced, water-soluble fertilizer before new spring growth begins.

Potting Korean Spice Viburnum

• Korean spice viburnum may also be container-grown. Combine four parts loam, three parts peat moss, two parts composted leaves and one part composted pine bark to create a nutrient-rich, well-draining growing medium for your shrub. Select a large planting container with at least four 1/4 inch drainage holes in the bottom; add 2 inches coarse gravel or broken pottery pieces to the bottom of the container to help facilitate healthy drainage. Add the growing medium to the container; plant the Korean spice viburnum shrub at the same level it grew in its original container.

Potted Korean Spice Viburnum Care

• Container-grown Korean spice viburnum requires more frequent irrigation that its garden-grown counterparts. Irrigate the potted shrub two to three times per week, or as often as necessary to maintain growing medium that's consistently moist. Avoid allowing the growing medium to become overly saturated. Feed your container-grown Korean spice viburnum with a balanced, water-soluble fertilizer every other month while it is actively growing and completing its spring blooming cycle.