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White Knight® Sweet Alyssum Lobularia hybrid

Flower Season
  • Fall
Mature Size
12" 2' 30cm 61cm
Height: 8" - 12"
Spread: 18" - 2'
Height: 20cm - 30cm
Spread: 46cm - 61cm
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  • Details

    8 - 12 Inches
    12 - 18 Inches
    18 - 24 Inches
    20cm - 30cm
    30cm - 46cm
    46cm - 61cm


    Masses of fragrant white blooms cover green foliage from planting to hard frost.  Very heat tolerant, great in landscapes and containers.

    Award Winner
    Fragrant Flower
    Continuous Bloom or Rebloomer
    Long Blooming
    Fall Interest
    Heat Tolerant
    Deadheading Not Necessary


    Plant Type: 
    Height Category: 
    Garden Height: 
    8 - 12 Inches 20cm - 30cm
    Trails Up To: 
    24 Inches 61cm
    12 - 18 Inches 30cm - 46cm
    18 - 24 Inches 46cm - 61cm
    Flower Colors: 
    Flower Shade: 
    Foliage Colors: 
    Foliage Shade: 
    Container Role: 

    Plant Needs

    Light Requirement: 
    Part Sun to Sun

    The optimum amount of sun or shade each plant needs to thrive: Full Sun (6+ hours), Part Sun (4-6 hours), Full Shade (up to 4 hours).

    Maintenance Category: 
    Bloom Time: 
    Planting To Hard Frost
    Hardiness Zones: 
    9a, 9b, 10a, 10b, 11a, 11b
    Water Category: 
    Soil Fertility Requirement: 
    Average Soil
    Uses Notes: 

    Great in landscapes and containers

    Maintenance Notes: 

    No dead-heading necessary for continuous bloom.

    White Knight is cold tolerant and heat tolerant. He is also a "heavy drinker" and will prefer evenly moist soil. It will be quick to show drought stress, but should bounce back quickly once re-hydrated. In a hanging basket you should be prepared to water often, maybe more than once a day during warm weather. Plants are easier to keep moist when planted in large planters. Due to water needs White Knight is ideal for use in larger planters. In containers an application of continuous release fertilizer at planting is best. To help maximize performance use applications of a well-balanced water-soluble fertilizer (according to package directions) starting in mid-summer.

    White Knight will also perform well in the landscape where she will function as an annual, full sun, groundcover.

    While plants shouldn't need to be trimmed back, if the plant is taking over your walkway or is looking less than the best a trim can be administered at anytime. Use a sharp pair of scissors or pruning shears as needed.

    A yearly application of fertilizer or compost on garden beds and regular fertilization of plants in pots will help ensure the best possible performance.

    The collection of Lobularia from Proven Winners® has quickly gained in popularity since being introduced in recent years. These plants continue to win awards for their unique tolerance to heat and their extended season performance.


    White Knight® Lobularia hybrid 'Inlbuwikni' USPP 25,210, Can 4,780
  • 4 Reviews

    Browse reviews from people who have grown this plant.
    • Order 2, 1 quart size, got them yesterday, barely any root development, look like they just germinated. Saw quart size at Home Depot today for $5.89 and plants were exactly what you’d expect for a quart. Why does ordering form proven winner direct charge almost double for no roots?

      Deborah Sobocinski-Nasierowski
      , New York
      , United States
      , 6 weeks ago
    • The White Alyssums are the ones that smell really sweet. I don't see any bees or butterflies at it but that's alright because I have so many other nectar plants. But the little tiny bees and other small insects like it. So it does attract SOME pollinators.

      Eric Harris
      , Illinois
      , United States
      , 5 years ago
    • I have this plant in a mixed container at my front door. I planted the container in the early spring when it was still cool outside. The planter contained, in addition to "White Knight", creeping jenny and pansies. The pansies have now been replaced with nasturtiums and the "White Knight" has filled out the top of the pot and looks great falling over the pot and topping the creeping jenny.

      Belinda Renno
      , Indiana
      , United States
      , 9 years ago
  • 27 Awards

    Award Year Award Plant Trial
    2021 Perfect Score Iowa State
    2021 Top Performer Oklahoma State University Botanical Gardens
    2021 Top Performer Les Exceptionelles
    2021 Top Performer University of Tennessee - Knoxville
    2021 Top Performer University of Minnesota - Grand Rapids
    2021 Gold Medal Champaign County Illinois Master Gardener Idea Garden
    2021 Perfect Score University of Minnesota - Morris
    2021 Best of Breed - Beds North Carolina State, JC Raulston Arboretum
    2021 Top Performer Mississippi State University - Poplarville
    2021 Perfect Score Michigan State University
  • 8 Recipes

  • 2 Videos

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