Botanical Name: Lobularia maritima ‘Yolo White’

Common Name: Sweet Alyssum

Hardiness Zone: Grown as an Annual in Most Climates (Perennial in USDA Zones 9–11)

Mature Size: 4–6" Tall × 8–12" Spread

Growth Habit: Compact, Dense, Mounding Habit

Sunlight: Full Sun to Partial Shade (Best Performance in Cooler Weather)

Soil: Well-Drained Soil; Adapts to Average Garden Conditions

Water Needs: Low to Moderate; Drought Tolerant Once Established

Bloom Season: Early Spring through Summer (Best Color in Cool to Mild Temperatures)

Fertilizer: Light Feeding as Needed

Features: Crisp White Blooms, Uniform Growth, Lightly Fragrant, Easy Care

Uses: Containers, Edging, Borders, Window Boxes, Cool-Season Color

Patent: ❌ Not Patented

Propagation: ✔ Allowed

More About Lobularia ‘Yolo White’

Lobularia YOLO™ White has a very different personality in the garden compared to many other Lobularia Varieties. Instead of drawing attention with bold color, it works more like a bright foundation that allows the rest of a planting to shine. The pure white flowers form soft clouds across the plant, creating a light and airy look that feels fresh and natural in Spring displays. I often describe white Alyssum as a “garden softener” because it smooths transitions between stronger colors and textures. The tiny blooms still carry that classic sweet honey fragrance that people associate with Sweet Alyssum, and you really notice it when the plants warm in the afternoon sun. When placed near patios, entryways, or garden paths, the scent becomes part of the experience of walking through the garden. The plants naturally spread outward in a low, cushion-like mound that fills space gently without becoming aggressive.

One of the most useful traits of YOLO™ White is how it creates visual balance in containers and garden beds. Bright flowers like orange, magenta, or yellow can sometimes feel overwhelming when planted together, but adding white Alyssum instantly makes the arrangement feel calmer and more refined. I frequently tuck it around the base of taller annuals so it acts almost like a living mulch of flowers. The plant grows outward while staying relatively low, which allows it to fill empty pockets in plantings without competing for height. Because the flowers appear in such dense clusters, the plant quickly creates a continuous carpet of white once it becomes established. That full coverage makes containers look mature and finished much faster than many filler plants. The clean white color also reflects light well, so it brightens shady corners and evening patio spaces. It is a simple plant, but it quietly improves the overall design of almost any planting.

Why We Like It (Our Trials)

In our trials here in Upstate South Carolina, Lobularia YOLO™ White has proven to be a strong performer when used as a structural filler in mixed plantings. Rather than standing alone as the star of a container, it works best when supporting other flowering plants. We often plant it around the edges of containers where its gentle spreading habit creates a soft transition from the container down toward the ground. The plants establish quickly in the cool weather of early Spring and begin filling outward almost immediately. Within a short time, the plant produces a thick blanket of flowers that stays surprisingly uniform. The compact branching keeps the plant looking tidy rather than sprawling or uneven. Even as the season progresses, the plants maintain a balanced shape that works well in both containers and landscape beds.

Another thing we appreciate about YOLO™ White is how easily it integrates into different planting styles. It works just as well in bright cottage-style containers as it does in more modern, minimal plant combinations. I often recommend it for gardeners who want their containers to feel full and professional without having to use a large number of plants. The fragrance is also a small but meaningful bonus that customers tend to notice when the plants are grouped together. During busy Spring days at the garden center, you can catch that sweet scent drifting across the display tables when the weather warms. It is one of those details that reminds people why Sweet Alyssum has remained a garden favorite for generations. For gardeners looking for a plant that quietly ties everything together while still providing reliable blooms, YOLO™ White has proven to be a very dependable choice in our trials.

Yolo White vs. Other Sweet Alyssum

Within the Yolo Series, ‘Yolo White’ is the brightest and cleanest option, offering crisp white blooms that highlight surrounding plants. It shares the same mounding, even growth as Yolo Pink and Purple, but its lighter color makes it feel more expansive and airy. While it doesn’t carry the color weight of the darker Yolos, it excels at brightening beds and containers.

Compared to Easy Breezy™ White, ‘Yolo White’ is less aggressive and more compact, making it ideal for detailed designs. Versus Stream™ Compact White, it is slightly fuller and more forgiving if spacing isn’t perfect. As a white alyssum, it’s one of the easiest to integrate anywhere. Gardeners rely on ‘Yolo White’ as a go-to neutral that fills space beautifully without stealing the show.