Long-flowered Four O'Clock
Mirabilis longiflora
Essentials
At a Glance
Plant Type
Perennial
Height
36 inches
Width
24 inches
Light
Full Sun, Partial Sun
Zones
8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
Southwestern U.S., Mexico
Toxicity
All parts are toxic if ingested
The Story
Plant Bio
Mirabilis longiflora is a perennial flowering plant known for its slender, elongated trumpet-shaped flowers and lush green foliage, typically blooming in shades of white or pale colors during warm seasons. This species is distinguished by its highly fragrant, long-lasting flowers that attract pollinators and its ability to thrive in well-drained, sunny environments.
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds into moist soil in spring for best germination.
- Water regularly to keep soil evenly moist during growing season.
- Provide full sun for abundant flowering.
- Fertilize monthly with balanced fertilizer during summer.
- Pinch back to encourage bushier growth in early summer.
- Divide clumps every 2-3 years in early spring for propagation.
Pro Tip
Ensure well-drained soil and full sun for vibrant blooms.
Keep It Thriving
Care Guide
Do
- Water consistently during dry spells 🌱
- Prune after flowering to maintain shape
- Apply mulch to retain moisture
Don't
- Overwater to prevent root rot ❌
- Avoid heavy fertilization late in the season
- Don’t disturb roots when dividing
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lift Store | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Long-flowered Four O'Clock questions
What zones can Long-flowered Four O'Clock grow in?
Long-flowered Four O'Clock is hardy in USDA Zones 8–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Long-flowered Four O'Clock deer resistant?
Not reliably. Deer may browse Long-flowered Four O'Clock, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Long-flowered Four O'Clock bloom?
Long-flowered Four O'Clock typically blooms in summer to fall through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Long-flowered Four O'Clock need full sun?
Long-flowered Four O'Clock does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Long-flowered Four O'Clock drought tolerant?
Yes — once established (usually after the first full season), Long-flowered Four O'Clock handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
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See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
