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Royal Carpet Alyssum Seeds

Scientific name Lobularia maritima

About this variety

Royal Carpet alyssum forms a low, spreading carpet of rich purple blooms with a soft fragrance and an elegant, finished look in the garden. These Alyssum Seeds - Royal Carpet produce compact plants that are perfect for edging, containers, rock gardens, and filling spaces between taller flowers and vegetables. Easy to grow and attractive to pollinators, this variety...

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Alliance Of Native Seedkeepers  |  SKU: FL88
$150 USD $200
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At a glance

The facts most gardeners need first

View the full variety record
300 minimum seeds per packet
  • Germination7–14 days · 65–80 °F
  • First bloom / maturity50-59 Days · 50-59 Days
  • SunFull sun
  • Spacingspace 8 in · rows 24 in
  • Growth habitProstrate/Groundcover · Annual · 6 inches to 1 foot tall
  • Best useborders, cutting gardens, pollinators, containers, and seasonal color
Secure checkout Details
Generic
Triple-tested seed qualityRegular quality and germination checks support every packet.

We regularly test seed quality and germination as lots move through storage and packing. We stand behind the seed we send and want customers to contact us when a packet does not perform as reasonably expected.

1-year seed warrantyCoverage begins on the date of purchase.

When properly stored, planted, and cared for, we guarantee reasonable germination and true-to-type growth for one year from the date of purchase. Conditions outside our control—including extreme weather, pests, unsuitable storage, and gardener error—are excluded. Contact us when something is not right so we can review the situation and work toward a replacement, refund, or another fair resolution.

Non-GMO / BE seed policyWe do not buy or sell genetically engineered or bioengineered seed.

Every seed variety we sell is non-GMO.

USDA’s National Bioengineered Food Disclosure Standard defines bioengineered foods as containing detectable genetic material modified through in vitro recombinant DNA methods in ways not achievable through conventional breeding or found in nature.

  • Hybrid means parent lines were conventionally crossed; hybrid does not mean GMO.
  • Heirloom and open-pollinated describe how a variety is maintained and reproduced.
  • Organic certification is separate and is shown only when verified for the individual product.

Read how we define heirloom, hybrid, and GMO/BE seed · USDA BE Standard

Packed in Colerain, North CarolinaPrepared in our seed room for gardens across the country.

Seeds are packed and shipped from Colerain, North Carolina. Our packets use forestry-certified paper, and we use recyclable paper mailers where appropriate. AONSK is also a 1% for the Planet partner while continuing to reduce waste in packing and fulfillment.

Seed-starting profileDifficulty, preparation, reliability, and timing Open

Seed success profile

Gardener experience Beginner-friendly
Germination difficulty Straightforward
Preparation before sowing
Use clean seed-starting conditions, the listed sowing depth and temperature, and steady moisture without saturation
Germination speed
7–14 days
Growing complexity
Bloom crop requiring species-specific sowing, spacing, deadheading or seed maturity, and support when tall
Patience and timing
50-59 Days
Is this seed a good match for your experience?
Expected germination
7–14
Germination temperature
65–80 °F
Stratification
Not normally required by the current record
Scarification
Not normally required by the current record
Pre-soaking
Not normally required by the current record
Light during germination
Surface sow or press into the mix; light is part of the germination requirement
Germination pattern
Usually reliable when seed is stored well and temperature, depth, moisture, and preparation match the recorded requirements
Transplant sensitivity
Varies by species; use direct sowing when the record warns against disturbance
Best chance of success
For Royal Carpet Alyssum Seeds, control temperature and moisture at sowing, label the start date, and compare emergence with the complete recorded germination window before reseeding.
Planning window

Plan around 7–14at65–80 °F. Keep moisture, light, and preparation aligned with the sowing instructions below.

Slow germination is not automatically failed germination.

Maintain the listed temperature, moisture, light, and treatment conditions for the full expected window. Some seed lots emerge gradually rather than all at once.

1 Beginner-friendly 2 One extra step 3 Some experience helpful 4 Patient growers 5 Advanced propagation

Seed age, storage, sowing depth, moisture, temperature, light, local conditions, and aftercare can affect results. Last reviewed July 2026.

Browse AONSK seed-starting and garden guides

Garden tools

Need a plan for your space?

Open the garden-fit planner or soil calculator only when you need them.

Open garden tools Uses this product’s recorded growing information. Local weather and garden conditions may vary.

About this variety

What to expect from Royal Carpet Alyssum Seeds

Royal Carpet Alyssum Seeds produce a garden-ready alyssum seed selection for home growers, market gardens, and seedkeepers.

Read the complete product descriptionTraits, flavor, garden use, variety notes, and the full catalog record

Royal Carpet alyssum forms a low, spreading carpet of rich purple blooms with a soft fragrance and an elegant, finished look in the garden. These Alyssum Seeds - Royal Carpet produce compact plants that are perfect for edging, containers, rock gardens, and filling spaces between taller flowers and vegetables. Easy to grow and attractive to pollinators, this variety offers long-lasting color and classic low-growing charm with very little effort.

Minimum Seed Count: 300 seeds

View all growing and care factsBotanical identity, timing, climate, soil, spacing, mature size, and crop-specific details

Plant identity

Minimum seed count 300 seeds
Seed product profile Flower
Scientific name Lobularia maritima
Also known as Alyssum, Alyssum Seeds - Royal Carpet
Color Purple
Life cycle Annual
Botanical family Brassicaceae
Reproductive type Open-Pollinated (OP)
Heritage qualifiers Non-GMO
Native to the United States Domesticated Plant
Domestication note Mediterranean Basin

Seed success and gardener experience

Gardener experience Beginner-friendlyLevel 2 of 5
Germination difficulty StraightforwardLevel 2 of 5
Preparation before sowing Use clean seed-starting conditions, the listed sowing depth and temperature, and steady moisture without saturation
Stratification Not normally required by the current record
Scarification Not normally required by the current record
Pre-soaking Not normally required by the current record
Light during germination Surface sow or press into the mix; light is part of the germination requirement
Germination pattern Usually reliable when seed is stored well and temperature, depth, moisture, and preparation match the recorded requirements
Growing complexity Bloom crop requiring species-specific sowing, spacing, deadheading or seed maturity, and support when tall
Transplant sensitivity Varies by species; use direct sowing when the record warns against disturbance
First harvest or bloom 50-59 Days
Best chance of success For Royal Carpet Alyssum Seeds, control temperature and moisture at sowing, label the start date, and compare emergence with the complete recorded germination window before reseeding.

Timing and climate

Days to maturity 50-59 Days
Germination 7–14
Germination temperature 65–80 °F
Planting season Early spring to summer
Bloom season May, June, July, August, September
Frost tolerance Semi-Hardy
Sunlight Full sun
Water needs Moderate

Site, soil, and space

Soil type Loamy
Preferred soil pH 6.0–6.5
Seed depth 1/8 in
Plant spacing 8 in
Row spacing 24 in
Mature height 6 inches to 1 foot
Growth habit Prostrate/Groundcover
Suitable growing locations Container, Garden Plot, Raised Bed, Greenhouse, Community Garden

Crop-specific details

Garden toolsOpen the garden-fit planner, planting-window questions, or soil calculator only when useful

Uses this product’s recorded growing information. Local weather, soil, and garden conditions may vary.

Garden-fit planning for this variety

Will Royal Carpet Alyssum Seeds fit your garden?

Check bloom timing, cut-flower or pollinator use, height, sun, sowing method, and life cycle.

Questions for this flower seed
Seed-starting fit and patience
Recorded product profileBeginner-friendlyStraightforwardRead why
Soil test, pH, drainage, and amendment calculator Have a laboratory soil report? Enter pH, nutrients, texture, bed size, and site observations here. Open soil tools
Recorded soil typeLoamy
Recorded pH range6.0–6.5
Water needsModerate
LightFull sun

Use a current laboratory soil test

Soil-test interpreter

Compare your report with this product's listed pH target: 6.0–6.5.

This tool interprets values you enter; it does not replace laboratory or Cooperative Extension amendment rates. Soil test methods and nutrient recommendations vary by region.

Full growing record

Open only the section you need

How to start Royal Carpet Alyssum Seeds from seedPreparation, timing, depth, germination, transplanting, spacing, and early care

Recorded germination plan

Expected germination
7–14
Germination temperature
65–80 °F

Complete sowing and planting guidance

Choosing the Right Location:

Light Requirements: Alyssum - Royal Carpet thrives best in full sun to partial shade. Select a location that receives at least 4-6 hours of direct sunlight daily.
Soil Requirements: Alyssum prefers well-drained soil but can tolerate a variety of soil types, including sandy, loamy, and even poorer soils. Ensure the soil is not waterlogged to prevent root rot.
Planting Seeds:

Timing: Sow Alyssum seeds directly outdoors after the last frost date in early spring. Alternatively, you can start seeds indoors 6-8 weeks before the last expected frost date.
Sowing Depth: Scatter the seeds on the soil surface and press them lightly into the soil. Do not cover the seeds with soil as they need light to germinate.
Spacing: Space seeds or seedlings about 6-12 inches apart to allow for adequate air circulation and growth.
Watering:

Initial Watering: Water the newly planted seeds or seedlings gently to keep the soil evenly moist until they establish.
Ongoing Watering: Once established, Alyssum is fairly drought-tolerant. Water only when the top inch of soil feels dry. Avoid overwatering, as it can lead to root rot.
Temperature and Climate:

Preferred Temperature: Alyssum - Royal Carpet grows best in temperatures ranging from 60-75°F (15-24°C). It can tolerate cooler temperatures but may not perform well in extreme heat without adequate moisture.
Fertilization:

Feeding: Alyssum generally does not require heavy fertilization. However, you can apply a balanced, all-purpose fertilizer once at planting time to encourage vigorous growth. If the plants appear to be struggling, a light feeding mid-season can help.
Pruning and Deadheading:

Deadheading: Regularly remove spent flowers to encourage continuous blooming throughout the growing season. This also helps to keep the plants looking tidy.
Pruning: If the plants become leggy or overgrown, you can trim them back by about one-third to promote bushier growth and more blooms.
Mulching:

Mulch Application: Apply a thin layer of organic mulch around the base of the plants to help retain soil moisture, suppress weeds, and regulate soil temperature. Avoid piling mulch directly against the stems to prevent rot.
Pest and Disease Management:

Common Pests: Alyssum - Royal Carpet is relatively pest-free, but you may occasionally encounter aphids or flea beetles. Use insecticidal soap or neem oil to control these pests if necessary.
Diseases: Ensure good air circulation around the plants to prevent fungal diseases. Avoid overhead watering to minimize the risk of mildew and other fungal issues.
How to grow this specific varietyLight, water, fertility, support, spacing, airflow, crop behavior, and season-long care

Complete growing guide

How to grow Alyssum: choose a site with the listed sunlight and soil requirements. Water consistently, avoid overcrowding, and monitor plants for pests, disease, and nutrient stress. Harvest at the proper stage for best flavor and seed quality.

Practical field and garden tips

Additional tips for Alyssum: succession plant when appropriate, label varieties clearly, and keep good garden notes on germination, vigor, flavor, and harvest timing so you can compare varieties season to season.
Harvest, storage, uses, and benefitsWhen and how to harvest, ways to use the crop, storage, culinary value, habitat value, and garden roles

Uses and benefits

Uses and Benefits:
Royal Carpet Alyssum (Lobularia maritima) is known for its dense clusters of purple flowers and its use as ground cover in gardens. Its sweet fragrance and ability to attract pollinators like bees and butterflies make it a popular choice for borders, rock gardens, and containers.

Although not commonly used medicinally, alyssum can add a mild, peppery flavor to salads and other dishes. It is also used in companion planting to repel certain pests and enhance the growth of neighboring plants.
Seed saving and carrying the variety forwardPollination, isolation, selection, harvest, cleaning, drying, and storage
Saving seeds from Royal Carpet Alyssum (Lobularia maritima 'Royal Carpet'):

1. Selecting Plants for Seed Saving:

Choose healthy plants with abundant, fragrant flowers.
Avoid plants showing signs of disease or poor growth.
2. Harvesting Seeds:

Timing: Allow the seed pods to mature and dry on the plant.
Collection: Collect dry seed pods on a dry day.
3. Drying Seeds:

Place the seed pods in a paper bag or on a screen in a dry area.
Allow them to dry completely for one to two weeks.
4. Cleaning Seeds:

Separation: Break open the pods to release the seeds.
Inspection: Ensure seeds are clean and free from mold or pests.
5. Storing Seeds:

Containers: Store seeds in labeled paper envelopes or airtight containers.
Storage Conditions: Keep in a cool, dry, and dark place.
Viability: Use seeds within two to three years for best results.
6. Testing Seed Viability:

Test by placing seeds on a damp paper towel in a plastic bag in a warm place and check for germination.
Tips for Successful Seed Saving:

Isolation: Maintain distance between different alyssum varieties.
Pollinators: Encourage pollinators for better seed production.
Record Keeping: Keep detailed records of the process.
Problems and answersPests, diseases, troubleshooting, practical response, and product-specific questions

Complete pest and problem guide

Common pests and problems for Alyssum: monitor for chewing insects, sap-sucking insects, fungal leaf spots, damping off, poor germination from cold or dry soil, and stress from inconsistent watering. Use crop rotation, spacing, mulch, and good airflow to reduce pressure.

Questions gardeners ask

Frequently Asked Questions — Alyssum

Q: When should I plant Alyssum?
A: Follow the planting season listed on this product page and adjust for your local frost dates.

Q: How deep should I sow the seeds?
A: Use the seed depth listed in the growing facts.

Q: Can I save seed from this variety?
A: Open-pollinated varieties can generally be saved when properly isolated and selected; hybrids may not grow true to type.
History, provenance, and cultural contextWhat is documented, what is reported, what remains uncertain, and how the variety reached gardeners

Scientific name: Lobularia maritima

Plant and variety history

Alyssum Seeds - Royal Carpet belongs to a plant lineage long associated with Mediterranean and Old World garden agriculture. It was selected over generations for kitchen, market, ornamental, or herbal value and remains useful in modern home gardens.

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Customer experience

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