How to Grow Simpson's Stopper
Wikimedia Commons
Simpson's Stopper
Myrcianthes fragrans
shrubSimpson's Stopper is a native Florida evergreen shrub known for its small, fragrant white flowers and tiny red berries that attract wildlife. It grows slowly to moderate heights and is highly valued in native plant landscaping for its ornamental appeal and ecological benefits. The plant is drought-tolerant once established and requires minimal maintenance.
When should you plant Simpson's Stopper in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Simpson's Stopper timeline · Pittsburgh, PA (Zone 6b)
-
Plant Simpson's Stopper
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
Harvest Simpson's Stopper
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Simpson's Stopper dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 10-11; frost-sensitive below 32°F
Sign up free to see if Simpson's Stopper grows in your zone — and get a personalized planting timeline.
Get my Simpson's Stopper timeline →Growth Stages
Establishment
3-6 monthsYoung plant with small, slender branches and minimal foliage
Keep soil consistently moist but not waterlogged. Provide afternoon shade in intense heat. Avoid heavy fertilization.
Early Growth
6-18 monthsPlant develops fuller branching structure; small, narrow opposite leaves appear throughout the shrub
Gradually reduce watering frequency. Light pruning to shape if desired. Mulch 2-3 inches around base to retain moisture and regulate temperature.
Flowering
Spring to early summer, often 4-8 weeksTiny, fragrant white flowers bloom along branch tips, often appearing in clusters
Minimal intervention needed; flowers are self-pollinating. Provide consistent moisture. Do not prune heavily during flowering.
Fruiting
Summer to fall, 8-12 weeksSmall, round red berries develop from spent flowers and ripen to deep red or burgundy
Allow berries to remain on plant to feed wildlife (native birds and small mammals). Maintain steady watering during fruit development.
Established/Mature
Year-round maintenance phaseDense, attractive evergreen shrub at full ornamental size (typically 8-12 feet tall); requires minimal input
Water only during drought periods. No regular fertilization needed. Prune only for shape or to remove dead wood. Extremely low-maintenance.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
Spray with insecticidal soap or neem oil if infestation is severe; use strong water spray to knock off insects
-
Hand-remove or apply horticultural oil during dormant season; prune heavily infested branches
-
Increase humidity with regular misting; use neem oil or miticide if population is high
Uses
Wildlife Food Source
WildlifeSimpson's Stopper berries are a crucial food source for native Florida birds and small mammals. The plant helps support biodiversity in native plant gardens and natural landscapes. [source]
Native Ornamental Landscaping
HouseholdThe attractive evergreen foliage, fragrant flowers, and colorful berries make Simpson's Stopper an excellent choice for native plant gardens, hedgerows, and environmental restoration projects. It provides visual interest year-round with minimal maintenance. [source]
Edible Berries
CulinaryThe small red berries are edible and mildly sweet with a subtle flavor. Indigenous peoples and early settlers used them fresh or in preparations, though they are more valued today as wildlife food. [source]
Traditional Herbal Uses
MedicinalIn traditional Mesoamerican and Caribbean medicine, various Myrcianthes species have been used to support digestive and general wellness, though scientific research on M. fragrans specifically remains limited. [source]
Fragrant Flowers for Arrangements
CraftThe small white fragrant flowers can be used in fresh floral arrangements and botanical crafts, adding delicate beauty and subtle fragrance to displays. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Berries naturally ripen and fall or are consumed by wildlife; no commercial harvest needed. Allow berries to remain on plant for ornamental appeal and wildlife food source. Minimal deadheading required; dead flowers drop naturally.
Fun Facts
- 🌱 Simpson's Stopper is endemic to South Florida and the Keys, making it a truly local native species that has evolved alongside regional wildlife for thousands of years.
- 🌱 The common name 'stopper' refers to a traditional use: the berries were once used as a natural remedy to 'stop' certain digestive issues, a practice reflected in the genus name Myrcianthes.
- 🌱 The fragrant white flowers attract native pollinators and are particularly sweet-smelling in early morning hours, helping the plant maximize pollination efficiency.
Gardening Terms
New to gardening? Learn about terms used in this guide:
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized Simpson's Stopper planting timeline
Tell us your zip code and we'll calculate exactly when to start Simpson's Stopper seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my Simpson's Stopper timeline →