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Salvia uliginosa (Bog Sage)

Salvia uliginosa (Bog Sage) is a graceful perennial admired for its masses of sky blue flowers that appear over a long flowering season. The airy stems create movement and softness in the garden while attracting bees, butterflies, and other beneficial pollinators. This vigorous plant is well suited to New Zealand gardens and is particularly valued for its ability to thrive in moist soils. Salvia uliginosa (Bog Sage) delivers reliable colour, height, and natural beauty from summer through autumn.

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Suited to regions:Subtropical, Temperate
Plant type:Perennials
Height:1.00 m
Spread:1.00 m
Flowering time:Summer, Autumn
Tolerances:Wet
Garden uses:Borders, Containers, Culinary, Living areas, Paths & Steps, Ponds, Pool areas
Garden styles:Backyard, City & Courtyard, Frontyard, Japanese, Modern
Easy to grow?Yes
Maintenance requirementsLow
Growth rateMedium
Also known as
Sku12484

How to grow Salvia uliginosa (Bog Sage) in NZ

Salvia uliginosa (Bog Sage) grows best in full sun or partial shade with fertile soil that retains moisture. Unlike many salvias, this variety enjoys consistently moist conditions and performs exceptionally well near ponds, streams, and low lying garden areas. Incorporating compost before planting will improve soil quality and support strong growth. Water regularly during dry periods, particularly while plants establish. Good sunlight and adequate moisture will encourage vigorous growth and abundant flowering.

Salvia uliginosa (Bog Sage) care tips

Salvia uliginosa (Bog Sage) is easy to care for and requires little maintenance. Regular watering during dry weather helps maintain healthy growth and prolong flowering. Remove spent flower stems if desired to keep plants tidy and encourage additional blooms. Applying a balanced fertiliser in spring will support strong growth and flower production. Cut the plant back in late winter before new growth emerges to rejuvenate the plant and maintain an attractive form.

Salvia uliginosa (Bog Sage) size, spacing, and growth rate

Salvia uliginosa (Bog Sage) typically reaches 1.2 to 2 metres in height and can spread to around 1 metre wide. It has a fast growth rate during the warmer months and quickly develops into a substantial clump. Space plants approximately 80 centimetres to 1 metre apart to allow for mature growth and good airflow. Its tall, airy habit makes it an excellent choice for adding height, texture, and colour to perennial borders and naturalistic plantings.

Landscaping uses for Salvia uliginosa (Bog Sage)

Salvia uliginosa (Bog Sage) is perfect for cottage gardens, wildlife gardens, mixed borders, and plantings around ponds or water features. The delicate blue flowers create a soft and natural appearance while attracting pollinators throughout the flowering season. It combines beautifully with ornamental grasses and other perennials and can be planted in groups for a dramatic display. Its ability to thrive in moist soils makes it especially useful in challenging garden locations.

Why buy Salvia uliginosa (Bog Sage) from The Plant Company?

The Plant Company is NZ’s most trusted plant nursery and offers premium quality Salvia uliginosa (Bog Sage) plants ready to thrive in New Zealand gardens. Every plant is carefully grown to ensure strong establishment, healthy growth, and reliable flowering performance. Customers benefit from expert horticultural advice, fast nationwide delivery, and outstanding customer service. With free shipping available on orders over $150, The Plant Company makes it easy to add this elegant and versatile perennial to your garden with confidence.

Questions and Answers

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