Blue hill salvia is a hardy plant that grows well in most any soil conditions as long as it receives at least six hours of direct sun each day and drains well. Good for borders, edging a walkway, or as a background plant to shorter plants, the perennial salvia attracts butterflies, bees, and hummingbirds to your garden area year after year. To plant blue hill salvia, you'll need to select a permanent location where it can grow undisturbed.
Dig a hole with a shovel or hand trowel for your blue hill salvia twice the size of the pot it is in. Plant multiple salvias at least 15 inches apart to allow room for them to mature to their full size.
Slip the pot carefully away from the root ball of the salvia without pulling on the plant body and set the salvia into the hole. Hold the salvia level so the top of the root ball is even with the ground soil.
Move the loosened soil back around the hole to fill in any gaps around the root ball of the salvia and firm it up to hold the plant in place.
Water the plant well to dampen the soil around the plant and the root ball. Keep the soil moist so long as it drains well and doesn't let the plant sit in water for long periods of time.
Add a mulch of shredded bark or leaves one to two inches deep around the base of each new salvia plant to keep soil moisture in and weeds out.
Apply a half-strength treatment of fertilizer to your plant as desired. However, excessive fertilizer may lead to growth which can't hold itself up and a decrease in flowering.