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Violet Knight Sweet Alyssum

Proven Winners

Availability : In Stock
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This product does not ship to: Idaho
  • Partial Sun to Full Sun (At Least 5 Hours of Direct Sunlight)
  • Mature Height 8 - 12 Inches
  • Mature Spread 8 - 12 Inches
  • Growing Zones 9 - 11
  • Use As A Spiller In Containers

Engulf a garden bed or planter in a lush carpet of sweet-smelling flowers when your plant Sweet Alyssum. This perennial plant grows in a mat and can trail up to 24 inches, making it an excellent option for a hanging basket or a ground cover. The tiny 4 petal purple flowers grow in an inflorescence or clusters. This prolific blooming plant will have flowers in the spring and summer and will have so many flowers it can be hard to spot the small green leaves that also adorn the stems.

Violet Knight™ Sweet Alyssum or Lobularia maritima is native to Europe. This plant is prized for its trailing abilities, making it popular to use in containers as a spiller. While Sweet Alyssum really shines in an upright planter or hanging basket, it’s versatile and can also be used in borders, edging, ground cover, landscape, or mass plantings. This plant is temperature tolerant, so exposure to chilly temperatures in the spring and fall or warm temperatures during the peak of summer is not a problem. Violet Knight™ Sweet Alyssum is known to bring butterflies and bees to a space, and it is grown as a perennial in USDA zones 9, 10, and 11. This flowering beauty is grown as an annual in other zones.

Violet Knight® Sweet Alyssum Plant Care

Violet Knight™ Sweet Alyssum is relatively easy to grow, but this plant prefers evenly moist soil. The plant quickly shows signs of dehydration but will bounce back once it gets a nice, long drink. Plants grown in hanging baskets typically need water daily or every other day, but Sweet Alyssum grown in a basket may need water several times per day on scorching days. This plant needs sun or part sun, so an area with at least 4 hours of sunlight can support this fast-growing bloomer. The more light the plant receives, the faster the soil will dry out, so keep that in mind. Sweet Alyssum prefers rich, loamy soil with a neutral pH. 

Fertilize Violet Knight™ Sweet Alyssum in the spring and feed again using a water-soluble fertilizer in midsummer. Plants in containers can be fed once a month to maintain growth and continue to push out flowers. Pruning is not usually necessary, but this vigorous grower can overtake walkways and beds, so trim it back if it overwhelms a space.

Violet Knight® Sweet Alyssum Plant Spacing

Violet Knight™ Sweet Alyssum grows 8 to 12 inches tall and almost forms a mat of flowers, so space plants 12 to 18 inches when planting in the ground. The plant typically spreads out about 18 to 24 inches and will fill in the surrounding space. Expect the Sweet Alyssum to trail up to 24 inches for a dramatic look in a container.

Violet Knight™ Sweet Alyssum Information

USDA Hardiness Zones: 9 - 11
Plant Type: Annuals
Light Exposure: Partial Sun to Full Sun (At Least 5 Hours of Direct Sunlight)
Mature Height: 8 - 12 Inches
Mature Spread: 18 - 24 Inches
Spacing: 12 - 18 Inches
Habit: Trailing
Flower Color(s): Purple
Flower Description: Violet
Bloom Period: Planting To Hard Frost
Foliage Type: Herbaceous
Foliage Color(s): Green
Foliage Description:
Seasonal Interest: Spring Flowering, Summer Flowering, Fall Interest
Watering: Average
Resists: N/A
Tolerates: Heat
Attracts: Bees, Butterflies
Container Role: Spiller
Uses: Borders, Containers, Edging, Groundcovers, Mass Planting, Wildlife Gardens
Features: Attracts Pollinators, Deadheading Not Necessary, Fragrant, Low Maintenance, Continuous Blooming or Rebloomer
Brand: Proven Winners
Common Name: Violet Knight™ Sweet Alyssum
Other Name(s):
Scientific Name: Lobularia maritima 'INLBUVIOKN' USPPAF, Can PBRAF

Container Sizes

Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on; type of plant, time of year, last pruning & many other factors.

4.5 Pot

4.5" Pot
 Also Known As:
   4.5" Container

 Plant Age:
   ~ 6 months
 Plant Size:
   ~ 3"-6"
 Pot Size:
   ~ 4.5"H x 3.75"W
   1.42 quarts

Quart Pot

Quart Pot
 Also Known As:

 Plant Age:
   ~ 6 months - 1 year
 Plant Size:
   ~ 4"-8"
 Pot Size:
   ~ 4.75"H x 4.5"W
   1.50 quarts

2.5 Quart

2.5 Quart
 Also Known As:
   2.5 Quart Pot

 Plant Age:
   ~ 1 - 2 years old
 Plant Size:
   ~ 8"-12"
 Pot Size:
   ~ 6.5"H x 6.5"W
   2.20-2.30 quarts

#1 Pot

#1 Pot
 Also Known As:
   #1 Container
    1 Gallon
 Plant Age:
   ~ 1 - 2 years old
 Plant Size:
   ~ 10"-14"
 Pot Size:
   ~ 7"H x 7.75"W
   2.26-3.73 quarts

#2 Pot

#2 Pot
 Also Known As:
   #2 Container
    2 Gallon
 Plant Age:
   ~ 1.5 - 3 years old
 Plant Size:
   ~ 12"-18"
 Pot Size:
   ~ 9.5"H x 9.5"W
   1.19-1.76 gallons

#3 Pot

#3 Pot
 Also Known As:
   #3 Container
    3 Gallon
 Plant Age:
   ~ 2 - 4 years old
 Plant Size:
   ~ 12"-30"
 Pot Size:
   ~9.5"H x 11"W
   2.32-2.76 gallons

For more detailed information, please click here.

Plant Addicts Guarantee (Included On All Plant Orders)

Plant Addicts always guarantees your plant(s) will arrive happy & healthy. However, plant(s) are being shipped through the mail & sometimes accidents happen. If the plant is dead, has dried out roots or the incorrect item was shipped, just notify Plant Addicts within 3 days upon delivery. We may ask for pictures but will try to make it as easy as possible for you. Please note, plant(s) with damaged branches or wilted leaves will not qualify for this guarantee. Plants are very resilient and will rebound quickly when cared for correctly. 

For more information on how to care for your new plants, please click on our guide below.

Guide: How to Care for Your New Plant(s)

Plant Addicts Warranty - 1 Year (Extra Purchase Required)

We encourage all plant lovers to purchase the Plant Addicts Warranty, whether you're a new gardener or an expert. There are many variables outside of anyone's control that can cause a plant to die. Hungry animals, drought, poor soil conditions, over watering, diseases & pests are all good examples of what can cause plants to die. The Plant Addicts Warranty is a 1 year warranty protecting you from all of the unknowns and will replace your plant if something were to happen to it.

The warranty is purchased on a per plant basis and must be purchased at the same time as the plant(s). We will cover 100% of the price of the plant, but the warranty does not cover shipping costs. SImply let us know if your plant has died within 1 year of receiving it and we will get you a new one shipped out as soon as possible (depending on the time of the year and availability). We may ask for photos for documentation purposes, but we try to make the process as easy as possible.

For more information, please click on our page below.

Guarantee and Warranty

Plant Shipping

Below are some factors we consider when determining when to ship the plants depending on the timing of the order.

Winter to Early Spring

We ship only when it's warm enough to plant in your growing zone.
Sometimes plants aren't completely ready to sell and ship in early spring. We will wait until the plants are ready before shipping so you don't get a subpar product.
For Southern plants we will be able to ship much earlier than plants coming from our northern nursery.


If there is extreme heat we may delay shipping for a week or several weeks.
We review what areas the plants are traveling through as well as your location.

Fall into Winter

We’ll ship plants out all the way up to the end of the fall planting season!


Get your order in early to reserve your plants for Spring planting!

Once your plant is shipped you’ll receive an automated email with tracking information. 

Click here for more detailed shipping information.

Planter Shipping

Standard Colors: 2-3 business days

Special Order Colors: 8 weeks - this is due to the planter being custom made with the color(s) of your choice

Please Note: On special orders there can not be any cancellations