How to Grow Blue Carpet
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Blue Carpet
Pratia pedunculata
groundcoverBlue Carpet is a low-growing, creeping groundcover native to New Zealand, featuring small delicate blue flowers and tiny green foliage. It spreads densely across soil and surfaces, creating a carpet-like appearance, and is prized for its ornamental qualities in rock gardens, borders, and containers. The plant produces small blue flowers and occasionally edible berries.
When should you plant Blue Carpet in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Blue Carpet timeline · Pittsburgh, PA (Zone 6b)
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Plant Blue Carpet
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 Blue Carpet
Around Jun 1≈ 45 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Blue Carpet dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 9-11; grows as annual or tender perennial in cooler zones
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Get my Blue Carpet timeline →Growth Stages
Seedling
2-3 weeksTiny plants with minimal foliage appear 10-14 days after sowing; very delicate with microscopic true leaves
Keep soil consistently moist; protect from direct sun; maintain humidity; avoid damping off by ensuring good air circulation
Establishment
3-4 weeksYoung plants develop multiple stems and begin spreading horizontally; foliage becomes more visible
Maintain even moisture; begin light fertilizing; gradually introduce more light; pinch back leading stems to encourage bushier growth and spreading
Vegetative Growth
4-8 weeksPlant actively spreads outward, filling designated areas; dense mat of small green leaves forms; stems root at nodes
Water regularly during dry spells; apply balanced fertilizer monthly; remove dead or damaged foliage; guide spreading direction as desired
Flowering
8-16 weeks or longerDelicate, small pale to bright blue flowers emerge along spreading stems; continuous blooming in favorable conditions
Deadhead spent flowers to encourage more blooms; maintain consistent moisture; reduce nitrogen fertilizer to promote flowering; enjoy extended bloom period
Mature Coverage
Ongoing in growing zonesPlant achieves full carpet-like coverage with dense foliage; flowers continue throughout growing season; small berries may form after flowers
Trim back as needed to maintain shape and density; reduce watering slightly; apply light fertilizer every 6 weeks; remove excess growth if spreading becomes invasive
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Increase humidity; mist foliage regularly; spray with neem oil if severe; ensure adequate air circulation
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and
Remove by hand; create barriers with crushed eggshells or diatomaceous earth; reduce excessive moisture and debris
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Improve air circulation; avoid overhead watering; remove affected leaves; apply fungicide if widespread
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Ensure excellent drainage; reduce watering frequency; improve soil aeration; repot in fresh soil if container-grown
Uses
Edible Berries
CulinarySmall purple berries that form after flowering are edible with a mild, slightly sweet flavor. They can be eaten fresh or used in desserts and preserves, though production is variable. [source]
Ornamental Groundcover
HouseholdExcellent for landscaping rock gardens, borders, between pavers, and in containers. Creates attractive dense carpet of foliage with delicate blue flowers, adding texture and color to garden spaces. [source]
Lawn Alternative
HouseholdServes as a shade-tolerant, low-maintenance alternative to traditional lawns in warmer climates. Requires less mowing and creates a soft, walkable surface with ornamental appeal. [source]
Floral Arrangements
CraftDelicate stems with blue flowers and foliage work well in miniature or fairy garden arrangements. Can be used fresh or dried for decorative purposes in small displays. [source]
Harvest Tips
Blue Carpet is ornamental; harvest foliage for arrangements anytime during growing season; small berries may be harvested when ripe (pale purple) for fresh eating or propagation; pinch back stems regularly to encourage fuller coverage and more flowers
Fun Facts
- 🌱 Blue Carpet is native to New Zealand and was traditionally used by indigenous Māori people for both ornamental and culinary purposes.
- 🌱 The plant produces berries that are attractive to birds, making it excellent for wildlife gardens despite its ornamental primary use.
- 🌱 Blue Carpet spreads by rooting at leaf nodes along the stems, allowing it to naturally fill large areas without intervention, much like creeping fig or ivy.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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