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Dusty Miller 'Silver Dust' Foliage (photo by Rosana Brien / My Garden Plot)

Dusty Miller Plant

About Dusty Miller (Senecio cineraria, Jacobaea maritima)

Dusty miller, also known as silver ragwort (Jacobaea maritima) and formerly referred to as Senecio cineraria, comes from the Mediterranean region, northern Africa, and western Asia. How to grow and care for your dusty miller in a colder area may depend on how cold your winters are. They love heat and sun. Here on the Pacific Northwest coast, the dusty miller does very well in summer and can survive the winter with a few plant care tips. Some gardeners have been successful growing dusty miller in colder regions like zones 5 and 6 – but gardeners may attribute this to planting it in a protected location during winter. They do better in zones 8 through to 11 as perennials.

The dusty miller is a lovely compact and busy plant appreciated for its attractive silver foliage. The leaves are fuzzy, giving it a silver white dusty appearance, and with its deeply cut form adds textural interest to a summer garden or autumn (fall) display. Excellent as a small accent plant in a border or as edging, and ideal grouped in container gardening. Blooms little cream or yellow flower clusters tend to be insignificant for the most part, and some remove them to draw more attention to the ornamental foliage. Generally short-lived, at least these dusty miller plants are drought tolerant, rabbit and deer resistant, love summer heat, and are low maintenance.

Dusty Miller At A Glance

Type: Tender perennial (grown as an annual in colder regions)

Location: Full Sun

Size: Varies – generally 30 cm (12 inches) in height but can be upwards to .75 metres (2.5 feet) tall

Seasonal Interest: Summer and Autumn (Fall)

When To Prune: Cut Back Early Spring

Plant Hardiness Zones: 8, 9, 10, 11

Dusty Miller In Summer Garden Beds (photo by Rosana Brien / My Garden Plot)
Dusty Miller In Summer Garden Beds (photo by Rosana Brien / My Garden Plot)

Where To Plant And How To Grow Dusty Miller

The dusty miller plant thrives best in full sun. It is drought tolerant and does well in dry to average moisture, well-draining soil. Dusty millers will not survive being planted in soggy soil. A hot south-facing protected area would be ideal. Additional fertilizer is not needed.

Pruning Dusty Miller And Winter/Spring Care

This plant is low maintenance. It can tolerate pruning, and pinching the centre will promote fuller growth.

The foliage can be left over the winter months. Cut back early spring to encourage new growth. If your dusty miller does not spring back, it likely did not survive the winter and will need to be replaced – treat as an annual for your region or try a different location in the garden next time.

A dusty miller planted in a container pot may need to be moved to a sheltered location from cold, frosty weather like in a greenhouse or conservatory.

Pests And Diseases That Affect Dusty Miller

Dusty miller plants are generally trouble-free, and deer and rabbit resistant. It can, however, be affected by rust.