- Height 8-12 Inches
- Width 18-24 Inches
- Use as a spiller when using in containers
- Sweet fragrant deep purple flowers!
- Growing Zones 9 - 11
Many gardeners turn to Sweet Alyssum for early spring color, and Dark Knight™ Sweet Alyssum can certainly fit the bill for brightening the dull days before most flowers begin their bloom. However, this variety will bloom all summer, which sets it far apart from the pack. The sweetly fragrant flowers are a deep shade of purple that pops against the medium-green foliage. Bees and butterflies flock to the masses of ever-blooming flowers, as well. and Dark Knight™ Sweet Alyssum is a hardy annual that blooms until the first hard frost, so they provide the fall interest that is much-needed in most gardens and containers.
You can expect your Sweet Alyssum to be a dependable trailing “spiller” in your container plantings. They can trail up to 24” in a container. Plus, they offer a constant show of color when planted in the garden as an annual border plant or groundcover. Both cold- and heat-tolerant, you’ll notice that your Dark Knight™ Sweet Alyssum is a dependable bloomer from early spring until fall. If you have a sunny space in need of color, give this beauty a try.
Dark Knight Sweet Alyssum Care
Dark Knight™ Sweet Alyssum doesn’t require deadheading and can withstand a variety of spring, summer and fall temperatures. However, it does require regular watering. Because of its water needs, try planting in a larger planter that will not dry out as quickly as a smaller one. Maximize container performance with regular applications of a balanced, water-soluble fertilizer starting in mid-summer. An annual application of compost or fertilizer will do for Sweet Alyssum planted in garden beds.
Dark Knight Sweet Alyssum Spacing
Opt for larger containers for your Sweet Alyssum to ensure maximum water retention. Container plant spacing should be 6 to 8”. When using as an annual groundcover or border plant, allow for 12-18” of space between plants.
Dark Knight Sweet Alyssum Information
USDA Hardiness Zones: 9-11 |
Flower Color(s): Purple |
Flower Description: Deep Purple |
Bloom Period: Planting To Hard Frost |
Foliage Color(s) Green |
Light Exposure: Partial Sun to Full Sun |
Height Class: Short |
Height: 8-12 Inches |
Spread: 18-24 Inches |
Spacing: 12-18 Inches |
Habit: Trailing |
Watering: Average |
Drought Tolerant: No |
Attracts: Bees, Butterflies |
Container Role: Spiller |
Use Types: Border Plant, Container, Edging Plant, Groundcover, Hanging Baskets, Landscape, Mass Planting |
Features: Fall Interest, Continuous Bloom or Rebloomer, Fragrant, Deadheading Not Necessary, Pollinator Attractor |
Maintenance: Easy |
Scientific Name: Lobularia hybrid 'INLOBU1007' USPP 26,931, Can PBRAF |
Common Name: Dark Knight Sweet Alyssum |
Other Name(s): |
Plant Type: Annual |
Brand: Proven Winners |
- SKU:
- LOBDKP45
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.
For more detailed information, please click here.
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Plant Addicts Warranty - 1 Year (Extra Purchase Required)

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

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
Plant Shipping
Time of Order:
Summer Shipping
- If there is extreme heat we’ll delay shipping.
- We’ll have to review what areas the plants are traveling through along with your location
Once your plant is shipped you’ll receive an email with tracking information. Depending on the above criteria we’ll ship your plant(s) towards beginning of the following week from your order. We put together this helpful guide of what to do when you receive your plants in the mail.
It is important to know that all of our plants are clearly labeled for which growing zones the plant can survive in. The plants are thoroughly trialed and tested in every growing zone before we state the plant can grow in a zone. Again, our #1 priority is to ship the plants to you healthy and ready to thrive in your location. So we will do everything in our power to do so.