How to Grow Red Carpet Plant
iNaturalist
Red Carpet Plant
Acaena novae-zelandiae
ground coverAcaena novae-zelandiae is a low-growing, creeping ground cover native to New Zealand, forming dense mats of feathery, finely-divided foliage. The plant produces distinctive red, spiky seed heads (burrs) that add ornamental interest in late summer and fall. It is drought-tolerant once established and valued for its decorative foliage and unique fruiting structures.
When should you plant Red Carpet Plant in your zone?
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Example Red Carpet Plant timeline · Pittsburgh, PA (Zone 6b)
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Plant Red Carpet Plant
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Red Carpet Plant
Around Jun 16≈ 60 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 6-9; cold hardy down to zone 6 with winter protection
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Seed and Germination
10-14 daysTiny seeds require light exposure to germinate; seedlings emerge as delicate rosettes with fine foliage
Keep soil lightly moist; do not cover seeds. Provide bright, indirect light. Germination takes 10-14 days.
Seedling to Young Plant
3-4 weeksRosettes expand and begin to develop creeping stolons; feathery foliage becomes more prominent and develops reddish or bronzy tones
Gradually reduce watering; avoid overwatering. Begin hardening off if growing indoors. Ensure excellent drainage.
Vegetative Growth and Mat Formation
4-8 weeksPlant spreads horizontally via stolons, forming dense low mats; foliage becomes denser and more ornamental with color development
Minimal fertilizer needed; avoid nitrogen-heavy feeds. Thin overcrowded areas if desired. Water only during dry spells.
Flowering and Bud Development
4-6 weeksSmall, inconspicuous greenish flowers appear above the foliage; followed by development of distinctive red, spiky burr seed heads
No special care needed. Allow flowers and burrs to develop fully for maximum ornamental effect.
Maturity with Fruiting Display
8-12 weeks or until winterPlant displays fully developed red, spiny burrs that persist on the plant; foliage may develop purple or bronze tones in cooler weather
Deadhead if burrs become invasive or unwanted; otherwise allow them to remain for winter interest. No deadheading needed for ornamental effect.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Remove by hand, use copper tape barriers, or apply organic slug pellets sparingly. Ensure good air circulation.
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Spray with water to dislodge; use neem oil if infestation is severe. Maintain humidity without waterlogging.
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Spray with insecticidal soap or strong water spray. Encourage natural predators like ladybugs.
Uses
Ornamental Ground Cover
HouseholdAcaena novae-zelandiae creates attractive, dense mats ideal for rock gardens, alpine troughs, borders, and xeriscaping. The feathery foliage and striking red burrs provide year-round visual interest. [source]
Dried Flower and Burr Arrangements
CraftThe distinctive spiky seed heads can be dried and used in dried flower arrangements, floral crafts, and decorative displays. The burrs retain their color and texture for extended periods. [source]
Wildlife Habitat and Seed Source
WildlifeThe seed burrs persist on plants and can disperse to nearby areas, providing a seed source for birds and small wildlife. Dense mats provide shelter for beneficial insects and small creatures. [source]
Low-Maintenance Xeriscaping
HouseholdOnce established, Acaena requires minimal water, fertilizer, or maintenance, making it ideal for water-wise landscaping and drought-tolerant garden designs. [source]
Harvest Tips
Acaena is not harvested for food or cut flowers. Burrs may be collected in late summer/fall for dried arrangements; cut stems when burrs are fully colored and dry. Allow some burrs to drop naturally for self-seeding.
Fun Facts
- 🌱 The spiky burrs of Acaena novae-zelandiae stick readily to clothing and animal fur, which is how the seeds naturally disperse—this trait earned it the nickname 'pigsnut' in some regions.
- 🌱 The genus Acaena contains species that are invasive in parts of Europe and California, where they've spread beyond their native New Zealand and southern South America ranges.
- 🌱 In its native New Zealand, Acaena species are important components of alpine and subalpine ecosystems, thriving in rocky, wind-swept terrain where few other plants can survive.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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