Juniperus horizontalis 'Bar Harbor' (Creeping Juniper 'Bar Harbor') is a tough, low-growing evergreen groundcover valued for blue-green foliage that can take on purplish tones in winter. You can expect it to stay about 9-12 inches tall while spreading broadly, making it a great choice where you want a durable, year-round mat of texture and color. It is generally hardy in USDA Zones 5-9.
Plant it where it will receive full sun for best density and color. Provide well-drained soil; it adapts to many soil types, including sandy and rocky sites, but it does not perform well in wet, poorly drained areas. Water regularly during establishment, then let the soil dry slightly between waterings. Once established, it handles drought and heat better than many groundcovers, and it tolerates moderately poor soils and some coastal/salt influence.
Use this juniper to cover slopes and banks, edge foundations, or spill over retaining walls and rock gardens. Minimal care is needed: avoid heavy shearing, and prune only to control spread or remove winter-damaged stems. Good air circulation and a sunny site help reduce pest and disease issues; avoid consistently damp sites to limit root problems.