Cover the planting site with 2 to 4 inches of organic compost the fall before you plant the strawberries. Till the compost into the soil at a depth of 8 to 10 inches.
Install a garden trellis into the soil, next to the wall up which you want the runners to climb. You can either lean the trellis up against the wall or insert the bottom into the soil at a depth of 6 to 12 inches to stabilize it.
Dig planting holes in the soil after the last spring frost. Make the holes as deep and wide as the root balls of the seedlings. Space the holes 24 inches apart and 6 inches from the base of the trellis.
Lower the strawberry seedlings into the holes. Firm the soil around the roots, and water until the soil settles. Cover the soil with a 1-inch layer of mulch to keep down weeds and snails.
Continue watering frequently enough to keep the soil moist. As the plants begin to produce runners, tie them to the trellis loosely with twist ties. Place one twist tie every 6 to 8 inches.
Remove the mulch in the fall, after harvest. Cut the runners back to the crown with pruning shears. They will regrow the next spring.