Images Depict Mature Plants
Salvia Blue Hill
Salvia x sylvestris 'Blauhügel'
Blue Hill Salvia is a great choice when you want that classic perennial salvia performance in a softer blue color. It is easy to use at the front or middle of sunny borders, and it pairs beautifully with catmint, lavender, coneflowers, yarrow, roses, black-eyed Susans, ornamental grasses, and Russian sage. I like it planted in groups, where the flower spikes can create a clean, repeating color. Give it full sun, drainage, and a haircut after bloom, and it rewards you with more flowers.
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Blue Flowering Salvia for Sunny Borders and Pollinator Gardens
Soft Blue Flowers for Full Sun Gardens.
Blue Hill Salvia is a compact perennial sage grown for its upright spikes of blue to lavender-blue flowers and easy full-sun performance. Its cool flower color brings a softer look than many deep purple salvias, making it especially useful in cottage gardens, pollinator beds, foundation plantings, walkway edges, and mixed perennial borders. Use it where you want reliable color, pollinator activity, and a clean upright habit without a demanding care routine.
A Long-Blooming Perennial with Repeat Color.
Blue Hill Salvia begins blooming in late spring to early summer and can rebloom when spent flower spikes are removed. The upright flower stems rise above mounded green foliage and create a strong vertical accent near the front or middle of a sunny bed. Plant it in groups for the best show, or repeat it through a border to connect other full-sun perennials.
Pollinator Friendly and Deer Resistant.
The flowers attract bees, butterflies, hummingbirds, and other beneficial pollinators during bloom. The aromatic foliage also helps make Blue Hill Salvia less appealing to deer and rabbits than many softer perennials. No plant is completely deer-proof, but perennial salvia is one of the stronger choices for sunny landscapes where color and browsing resistance both matter.
Drought-tolerant once established.
Once established, Blue Hill Salvia can handle periods of dry weather and performs well in average, well-drained garden soil. It is a strong fit for low-maintenance perennial beds, water-wise plantings, curbside gardens, rock gardens, and sunny foundation beds. Avoid soggy soil, heavy shade, and overly rich conditions, which can reduce flowering and weaken the plant.
Easy Care with a Clean Seasonal Refresh.
Plant Blue Hill Salvia in full sun with well-drained soil. Water regularly during the first growing season, then reduce watering once roots are established. Deadhead individual spent flower spikes or shear the plant after the first major bloom flush to encourage fresh foliage and repeat flowers. Cut back old stems in late fall or early spring, before new growth begins.
| Hardiness Zone: | 4-8 |
|---|---|
| Mature Height: | 18 to 24 Inches |
| Mature Width: | 18 to 24 Inches |
| Sunlight: | Full sun; tolerates light part shade with reduced flowering |
| Soil | Average, well-drained soil |
| Water Requirements: | Average during establishment; drought tolerant once established |
| Bloom Time / Color | Late spring to summer; blue to lavender-blue flower spikes, with rebloom after trimming |
| Ornamental Features | Blue flower spikes, upright habit, compact mound, long bloom potential |
| Wildlife Value | Attracts bees, butterflies, hummingbirds, and other pollinators |
| Resistance | Deer resistant, rabbit resistant, drought tolerant once established, heat tolerant, low maintenance |
| Landscape Uses | Sunny borders, pollinator gardens, cottage gardens, foundation beds, walkway edges, mass plantings, rock gardens, curbside beds, low-maintenance perennial beds, rose companions |
How to Care for Salvia Blue Hill
Before you buy a Blue Hill Salvia, read the recommended care instructions to keep this plant healthy and thriving.
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How should I plant Blue Hill Salvia?
Plant Blue Hill Salvia in full sun with average, well-drained soil. Choose a site that receives at least 6 hours of direct sun per day for the best flowering, strongest stems, and most compact habit. Light part shade is tolerated, but too much shade may reduce bloom and cause looser growth. Dig a hole about twice as wide as the root ball and no deeper than the container. Set the crown level with the surrounding soil, backfill gently, and water thoroughly. Space plants about 18 to 24 inches apart for a full border, mass planting, or pollinator bed while still allowing airflow between clumps.
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How often should I water Blue Hill Salvia after planting?
Water Blue Hill Salvia deeply after planting and keep the soil evenly moist while roots establish. During the first growing season, water when the top few inches of soil begin to dry, especially during hot, dry, or windy weather. Once established, Blue Hill Salvia is drought tolerant and usually needs less supplemental watering. It will bloom best with occasional deep watering during extended dry periods. Avoid constantly soggy soil, especially in winter.
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When should I fertilize Blue Hill Salvia?
Blue Hill Salvia usually needs little fertilizer in average garden soil. A light application of compost or a balanced slow-release fertilizer in spring is enough if the soil is poor or growth is weak. Avoid heavy feeding, especially with high-nitrogen fertilizer. Too much fertility can encourage leafy growth at the expense of flowers. Full sun, good drainage, deadheading, and proper spacing are usually more important than frequent fertilizing.
When and how should I prune Blue Hill Salvia?
Deadhead spent flower spikes during the bloom season to keep the plant tidy and encourage additional bloom. After the first major flush of flowers fades, shear the plant lightly to refresh the foliage and promote rebloom. Cut old stems back in late fall after frost or in early spring before new growth emerges. If mature clumps become crowded or less vigorous after several years, divide them in spring to refresh growth and improve flowering.
