Floss Flower 'Bumble Silver'
Floss Flower 'Bumble Silver'
Ageratum houstonianum 'Bumble Silver'
Mexican Ageratum
Blue Billygoatweed
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Bumble Silver Ageratum | Ageratum houstonianum ‘Bumble Silver’ | Floss Flower ‘Bumble Silver’ | Ageratum ‘Bumble Silver’
Floss Flower 'Bumble Silver' is a compact, sun-loving annual prized for its continuous display of fluffy, icy silvery-white, button-like blooms that sit neatly above lush green foliage. This highly floriferous selection from the Bumble series is known for its uniform, mounding habit, excellent heat tolerance, and nonstop flowering from late spring until frost. Its nectar‑rich blossoms draw butterflies and bees, making it a standout choice for pollinator gardens, mixed containers, window boxes, and sunny landscape borders or edging. With its tidy form and reliable performance in garden settings, Bumble Silver offers cool, textured beauty with minimal maintenance.
Growing Floss Flower
Light: Full sun to partial shade; produces the most abundant blooms in full sun, but appreciates light afternoon shade in regions with extremely hot summers.
Soil: Well‑drained, fertile soil; highly adaptable but performs best in organically rich mixtures and will not tolerate soggy roots.
Water: Moderate; water regularly to keep the soil evenly moist, especially in extreme heat, but allow the surface to dry slightly between waterings.
Maintenance: Deadheading spent flowers is not strictly necessary but promotes a cleaner appearance and encourages even more continuous blooming.
Wildlife: Highly attractive to butterflies, bees, and other beneficial pollinators; generally resistant to deer and rabbits.
Hardiness: Perennial in USDA zones 10–11; grown as an annual in cooler regions.
Shipping InfoFloss Flower plants are shipped as healthy young starts in 4" nursery pots. Allow 1–2 weeks after arrival for plants to recover from shipping and resume active growth before repotting or planting outdoors.
Growing Zones
9 - 11
Low Temperature
32°F
High Temperature
+90°F
Fragrant
Non Fragrant
Polinator Required
No
Polinator Friendly
Yes
Flower Color
Silver Purple White Green
Growth Rate
Fast
Soil
Rich, average, well-draining soil
Moisture
Moderate
Sun Exposure
Full Sun to Part Shade
Mature Spread
12 to 15 inches
Mature Height
8 to 12 inches
Bloom Period
Late Spring to Fall
Pruning Time
Anytime during the active growing season
Pet Safe
No
Perennial / Annual
Perennial
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