Species
Mimulus aurantiacusSticky Monkeyflower2 other cultivars
The Story
Plant Bio
A compact, bushy plant with vibrant yellow flowers and attractive foliage, suitable for garden beds and containers.
Features bright yellow, snapdragon-like flowers with red spots in the throat. Thrives in wet, boggy conditions and can be grown in shallow water.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Annual
Height
12 inches
Width
18 inches
Light
Full Sun, Partial Sun
Zones
5, 6, 7, 8, 9
Water
High
Humidity
Average
Lifespan
Perennial
Native To
North America
Toxicity
Non-toxic
Bloom period
Early summer – Late summer
In flower about 3 months of the year
Planting
How to Grow
- Tuck seeds into moist soil in early spring for best germination.
- Mist cuttings regularly to maintain humidity and encourage rooting.
- Transplant seedlings when they are 2-3 inches tall, after the last frost.
- Water deeply once a week, allowing soil to dry slightly between watering.
- Apply a balanced fertilizer monthly during the growing season.
- Prune lightly to maintain shape and remove dead or damaged growth.
Pro Tip
Use well-draining soil and avoid overwatering to prevent root rot.
Keep It Thriving
Care Guide
Do
- Water consistently, keeping soil moist but not waterlogged 🌱
- Provide full sun for optimal flowering
- Mulch around plants to retain moisture and suppress weeds
- Fertilize monthly with a balanced fertilizer
Don't
- Avoid overwatering, which can cause root rot ❌
- Don’t plant in heavy clay soil without amendments
- Refrain from fertilizing late in the season to prevent weak growth
- Never forget to prune dead or damaged stems
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Fertilize | ||||||||||||
| Pinch | ||||||||||||
| Plant |
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
Roundleaf Monkeyflower questions
What zones can Roundleaf Monkeyflower grow in?
Roundleaf Monkeyflower is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Roundleaf Monkeyflower deer resistant?
Not reliably. Deer may browse Roundleaf Monkeyflower, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Roundleaf Monkeyflower bloom?
Roundleaf Monkeyflower typically blooms in early summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Roundleaf Monkeyflower need full sun?
Roundleaf Monkeyflower does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Mimulus to compare
Barton's Monkeyflower
Mimulus x lewisii-cardinalis
Seep Monkeyflower
Mimulus guttatus
California Sunrise Seep Monkeyflower
Mimulus guttatus 'California Sunrise'
Pamela Monkey Flower
Mimulus guttatus 'Pamela'
Allegheny Monkey Flower
Mimulus ringens
White Monkey Flower
Mimulus bifidus 'White'
Keep exploring
Explore the genus
Hardy in your zone?
Grow Roundleaf Monkeyflower with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.