How to Grow Browallia Silver Bells
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Browallia Silver Bells
Browallia speciosa 'Silver Bells'
flowerBrowallia Silver Bells is a compact, bushy ornamental flowering plant prized for its delicate white flowers with blue throats and silvery undertones. This tender annual produces masses of small blooms throughout the growing season, making it excellent for containers, hanging baskets, and garden borders. The plant typically reaches 10-12 inches in height with a graceful, mounding habit.
When should you plant Browallia Silver Bells in your zone?
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Example Browallia Silver Bells timeline · Pittsburgh, PA (Zone 6b)
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Plant Browallia Silver Bells
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Browallia Silver Bells blooms
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Browallia Silver Bells dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Best grown as an annual in zones 2-11; overwinters as a tender perennial in zones 10-11
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Get my Browallia Silver Bells timeline →Growth Stages
Seedling
2-3 weeksTiny seedlings with first true leaves appearing after 10-14 days
Maintain warm soil (70-75°F), high humidity, and consistent moisture. Provide bright, indirect light. Keep away from direct sun until leaves have hardened.
Vegetative Growth
3-4 weeksLeafy plant developing bushy structure with multiple stems and increasing foliage coverage
Pinch back growing tips when 3-4 inches tall to encourage bushier growth. Maintain moist soil and bright conditions. Begin light fertilizing.
Bud Formation
2-3 weeksSmall flower buds beginning to form in leaf axils and terminal positions
Continue regular watering and feeding. Provide consistent light conditions. Watch for early pest signs.
Flowering
6-12 weeks or until frostPlant covered with delicate white flowers featuring blue throats, creating striking bicolor display
Deadhead spent flowers to encourage continuous blooming. Maintain consistent moisture. Feed weekly with diluted balanced or bloom-boosting fertilizer.
Decline/Dormancy
Variable; until frost or seasonal changePlant growth slows as temperatures drop or plant reaches end of season; flowering reduces significantly
Gradually reduce watering and fertilizing. In zones 10-11, can be cut back and overwintered indoors for next season.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with insecticidal soap or neem oil; remove heavily infested leaves; improve air circulation
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Increase humidity; spray with water to dislodge; use neem oil or miticide if severe
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Remove with rubbing alcohol on cotton swab; apply insecticidal soap; isolate affected plants
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Spray with strong water stream; use insecticidal soap or neem oil
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Allow soil to dry slightly between waterings; use gnat traps; apply neem oil drench if severe
Uses
Container & Hanging Basket Gardens
HouseholdBrowallia Silver Bells excels in containers, window boxes, and hanging baskets where its trailing, bushy habit and masses of delicate flowers create striking displays. The compact growth makes it ideal for small spaces and patios. [source]
Pollinator Attraction
WildlifeThe delicate flowers attract bees, butterflies, and other beneficial pollinators to gardens and containers. Regular blooming throughout the season provides consistent nectar sources. [source]
Cut Flowers & Floral Design
CraftBrowallia flowers with their distinctive white and blue coloring can be used in fresh flower arrangements for delicate, cottage-garden style bouquets and garden designs. [source]
Shade Garden Filler
HouseholdSilver Bells thrives in partial shade and brightens shaded areas with its white flowers, making it perfect for understory planting beneath trees or in north-facing gardens where other flowers struggle. [source]
Harvest Tips
Browallia Silver Bells is ornamental and not harvested for food, but deadheading is recommended. Pinch off spent flowers just below the bloom to encourage new flower production and extend flowering season from summer through fall. Cut stems can be used in fresh flower arrangements if desired.
Fun Facts
- 🌱 Browallia was named after John Browallius, an 18th-century Swedish bishop and botanist who was a friend of Carl Linnaeus, the father of modern taxonomy.
- 🌱 The 'Silver Bells' cultivar is particularly prized for its pure white flowers with striking blue centers, which become more pronounced as flowers age.
- 🌱 Browallia flowers are sensitive to light and typically close at night and on cloudy days, only opening fully in bright light conditions.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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