Botanical Name: Lobularia maritima ‘Stream™ Compact White’

Common Name: Sweet Alyssum

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

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 (Improved Heat Tolerance for Alyssum)

Fertilizer: Light Feeding as Needed

Features: Clean White Blooms, Compact Form, Improved Heat Tolerance, Lightly Fragrant

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

Patent: ✔ Patented

Propagation: ❌ Propagation Prohibited Without License

More About Lobularia ‘Stream™ Compact White’

Lobularia Stream™ Compact White delivers the classic charm of Sweet Alyssum in a particularly refined and controlled plant form. The bright white flowers appear in dense clusters that sit tightly across the top of the foliage, giving the plant a very clean and polished appearance. I often notice that this variety looks almost “finished” even when the plants are still relatively young because the flower coverage is so uniform. The blooms themselves are small and delicate, but when they appear in large numbers they create a soft cloud of white that brightens whatever planting they are part of. Like other Lobularia, the flowers carry the familiar light honey fragrance that people associate with Sweet Alyssum. When the plants warm in the sun, the scent becomes noticeable and adds a pleasant sensory detail to containers and garden beds.

The compact nature of Stream™ Compact White makes it especially useful when a planting needs neat structure rather than loose, sprawling growth. Traditional varieties often spread aggressively and can become thin or uneven as the season progresses. This selection stays tighter and more balanced, which helps containers and edging plantings maintain a tidy appearance. I often think of it as a finishing plant because it fills gaps between larger flowers while keeping everything looking intentional and organized. Because the plant stays compact, the flowers remain concentrated and visually strong rather than scattered across a large plant. It is a simple plant, but its structure makes it extremely useful in thoughtful planting designs.

Why We Like It (Our Trials)

In our trials here in Upstate South Carolina, Stream™ Compact White has proven to be one of the most reliable compact Lobularia selections we grow. The plants establish quickly in the cool conditions of early Spring and begin flowering almost immediately after planting. Once they begin blooming, the plants tend to stay covered in flowers rather than cycling between heavy and light bloom periods. The branching remains tight and uniform, which allows the plant to hold a rounded shape throughout the season. Even as the weather begins warming later in Spring, the plants continue producing new blooms rather than fading early like some older Alyssum varieties. When brief heat stress occurs, the plants recover quickly and return to strong flowering.

Another reason we continue growing Stream™ Compact White is how easily it fits into almost any planting combination. White flowers naturally brighten containers and help connect different colors within the planting. The fragrance also adds a subtle layer of charm that gardeners tend to notice once the plants are growing near patios or walkways. During the Spring season in the garden center, customers often catch that sweet scent while browsing nearby plants. It is one of those small qualities that makes Lobularia feel timeless in the garden. compact, well-behaved plant, Stream™ Compact White has been a consistently strong performer in our trials.

Stream™ Compact White vs. Other Sweet Alyssum

‘Stream™ Compact White’ is the cleanest and most formal option within the Stream™ Series, offering bright white blooms on an ultra-uniform plant. Compared to Compact Rose and Compact Purple, it blends more easily into structured designs while highlighting nearby colors. Its restrained growth keeps borders looking sharp even as surrounding plants mature and shift. Like the rest of the series, Compact White stays tight and predictable.

Compared to Yolo White, it is more compact and less forgiving of spacing errors. This tighter habit makes Compact White better suited for symmetrical layouts and high-visibility planting areas. Against Easy Breezy™ White, Compact White trades spill for precision and excels in formal borders. Gardeners choose Stream™ Compact White when neatness and consistency are the top priorities.