Grey cottonheads
Conostylis candicans is an evergreen clumping perennial that grows to around 0.3m high with a slightly wider spread of up to 0.8m. It features striking blue-grey, hairy, strap-like foliage that looks almost silvery in the sun, topped with bright yellow flower heads on tall stems in spring (and often from winter right through to early summer). This tough, drought-tolerant plant is perfect for roadside plantings, borders, rock gardens, or massed drifts. Sometimes called Grey Cottonheads or just Cottonheads, it’s a low-maintenance native that brings texture and colour without fuss.
Widely available for sale from mail-order and retail nurseries across Australia, Conostylis candicans is closely related to the better-known Kangaroo Paws (both in the Haemodoraceae family). It’s a strap-leaved plant that loves a sunny spot (full sun to light shade) and absolutely demands well-drained soil. It handles coastal winds, poor soils, and light frosts, making it a favourite for low-water gardens.
C. candicans is one of the most popular species in the genus. The cultivar ‘Silver Sunrise’ (often seen as Conostylis candicans ‘Silver Sunrise’) is especially compact and showy, with even brighter silver foliage and golden-yellow button flowers—great for smaller spaces or pots.
Planting and Position
Give it a sunny position in free-draining soil—sandy or gravelly is ideal. If your soil is heavy clay or stays wet, mound it up or plant in raised beds to improve drainage. It also performs beautifully in containers or on slopes. Once established, it’s very drought hardy, though very dry spells can reduce flowering. A handful of low-phosphorus native fertiliser at planting time and again after flowering helps keep it looking its best.
How to Grow Conostylis candicans – Basic Care
Not fussy about soil type as long as drainage is excellent, Conostylis candicans grows well in full sun and is a natural fit for the rock garden.
High humidity or poor drainage can lead to fungal issues like root or crown rot, so err on the dry side. Best in sandy-type soil, or try hilling up the soil to create a raised planting area.
- Water sparingly once established—deep, infrequent watering is better than constant light sprinkles.
- Remove spent flower stems and any dead foliage in autumn to keep the plant tidy and encourage fresh growth.
- Largely pest-free and needs very little ongoing maintenance, which is why it’s so popular for verges and public plantings.
Propagation
You can grow new plants from seed, though germination can be a bit hit-and-miss. Division of established clumps is possible but trickier than with kangaroo paws—best done in cooler months and potted up until they re-establish.
Common Problems
Mainly root or crown rot from poor drainage or overwatering. Use gravel mulch instead of organic mulch to keep the crown drier. Mealybugs can occasionally appear, but they’re rarely a big issue in open garden situations.
Summary Information
- Botanical Name – Conostylis candicans
- Common Names – Grey Cottonheads, Cottonheads
- Position – Full sun to light shade
- Soil – Very well drained (sandy, loamy, or poor soils)
- Flowers – Bright yellow balls on tall stems
- Flowering Time – Winter to spring (sometimes into summer)
- Foliage – Blue-grey to silvery, strap-like and tufted
- Frost Tolerance – Mild to light frosts
- Drought Tolerance – High once established (may skip flowering in extreme dry)
- Uses – Borders, mass planting, rock gardens, containers, roadside, coastal, erosion control
- Attracts – Bees, butterflies and other pollinators
Other Conostylis Species
If you like Grey Cottonheads, you might also enjoy these related species:
- C. aculeata – Also known as Prickly Cottonhead
- C. setigera – Also known as Bristly Cottonhead or ‘Lemon Lights’
- C. bealiana – Yellow trumpet-like flowers
- C. juncea – Dwarf Cottonheads
- C. argentea – Silver Conostylis with creamy white flowers
- C. vaginata – Sheath Conostylis
- C. seorsiflora subsp. seorsiflora – Low-growing mat-forming species
Conostylis candicans is one of those reliable, no-fuss natives that just keeps performing year after year. Pop a few in your garden and you’ll quickly see why it’s a favourite for both home gardeners and landscapers.