Scarlet Monkeyflower
mimulus cardinalis
Also known as: ["Red Monkeyflower","Canyon Red Flower"]
Overview
A vibrant perennial herb native to western North America, known for its striking red tubular flowers and preference for moist habitats.
Benefits & Perks
["long-flowering","wildlife attractant (bees, butterflies, birds)","drought tolerant","shade tolerant"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Lamiales |
| Family: | Phrymaceae |
| Genus: | Mimulus |
| Botanical Name: | Mimulus cardinalis |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: moist garden beds, near water features, or in containers with consistent moisture
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–30°C"}
- Hardiness: {"zones":"7–10"}
- Misting: every 2–3 days to maintain humidity, especially in dry climates
- Drainage: Moderately well-draining; avoid waterlogged soil.
- Soil Type: Rich, well-draining soil with organic matter; can tolerate slightly moist conditions.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: moderate
- Pruning Frequency: After flowering; as needed to remove dead or overgrown stems.
- Pruning Intensity: Moderate; focus on selective removal rather than heavy cutting.
Care Details
Ideal Sunlight Coverage:
Bright indirect light for 6–8 hours daily; can tolerate partial shade, especially in hot climates.
Sunlight Tolerance Tips:
Acclimate new plants to sunlight gradually; protect from intense midday sun to prevent scorching; adjust light exposure based on indoor vs. outdoor placement.
Care Requirements
Care Difficulty
moderatemoderate
Sunlight
partial shade to full sun
Rotate plant weekly for even growth; use sheer curtains to filter direct sun; move outdoors in spring/summer for stronger light.
Watering
every 3–5 days during active growth, reduce in winter
Water thoroughly until it drains from the bottom; allow top inch of soil to dry between waterings; avoid letting the plant sit in water.
Soil
moist, well-draining, rich in organic matter
pH: Slightly acidic to neutral (pH 6.0–7.0).
Use a mix of peat, perlite, and compost; avoid heavy clay soils; ensure pots have drainage holes.
Temperature
Prefers 60–75°F (15–24°C); tolerates cooler temperatures but avoid frost; thrives in mild, humid conditions.
Avoid sudden temperature fluctuations; keep away from heating/cooling vents; maintain moderate humidity.
Fertilizing
every 4–6 weeks during growing season with balanced liquid fertilizer
Apply fertilizer after watering to prevent root burn; flush soil occasionally to prevent salt buildup; reduce frequency in low-light conditions.
Propagation
Methods
Stem cuttings in water or moist soil; division of clumps is also effective.
Step-by-Step Propagation Guide
- Take 4–6 inch cuttings.
- Remove lower leaves.
- Place in water or soil.
- Keep warm and humid.
Best Time: Spring or early summer when the plant is actively growing.
Environment
Warm, humid conditions with indirect light; maintain consistent moisture.
Medium
Well-draining soil mix or water with occasional root hormone application.
Hormone
Optional but recommended for faster rooting.
Timeline
Roots develop in 2–4 weeks; new growth appears in 6–8 weeks.
Tools Needed
Pruning shears, rooting hormone, small pots, plastic wrap.
Quick Tips
Use healthy, non-flowering stems; change water weekly if using water propagation; maintain high humidity for soil propagation.
Pruning & Repotting
Pruning Guide
Method
Pinch back tips for bushier growth; cut stems just above a leaf node or bud.
Pruning Plan
Remove spent flowers to encourage reblooming; trim leggy growth to maintain shape; thin overcrowded stems for better air circulation.
Tools
Clean pruning shears, gloves.
Checklist
Sterilize tools; prune after flowering; remove dead or diseased stems; shape as desired.
Repotting Guide
Best Season
Spring, before new growth begins.
Pot Size
One size larger pot; ensure it has drainage holes.
Method
Use fresh, well-draining soil; gently tease out root ball; trim any circling roots.
Suggestions
Repot every 1–2 years or when roots fill the pot; beneficial for growth and drainage.
Checklist
Choose appropriate pot size; prepare fresh soil mix; handle roots gently; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture daily; water when top inch is dry; ensure proper drainage; avoid overhead watering.
How to Apply Water Properly
Water directly at the root zone to avoid wetting foliage; ensure water penetrates deeply to encourage deep root growth; water in the morning to allow foliage to dry during the day.
Watering Schedule Tips
Keep soil consistently moist, especially during active growth; reduce watering in winter to prevent root rot.
Soil Improvement
Add perlite or sand for drainage; incorporate compost for fertility; ensure good aeration.
Temperature Stress Management
Signs of Temperature Issues
Chlorosis or wilting in excessive heat; leaf drop or stunted growth in cold stress.
Cold Stress
Slows growth; may cause leaf discoloration or dieback; vulnerable to frost damage.
Solution: Protect from frost with a cover or move indoors; maintain consistent temperatures above 50°F (10°C); avoid cold drafts.
Hot Stress
Wilting, leaf scorch, or reduced flowering; increased water demand in high heat.
Solution: Provide shade during peak heat; increase humidity with misting or pebble trays; water more frequently but avoid waterlogging.
Fertilizing Guide
Fertilizing Checklist
Use diluted fertilizer; fertilize during active growth; avoid winter feeding; flush soil periodically.
Fertilizing Method
Use balanced liquid fertilizer diluted to half strength every 4–6 weeks during growing season; avoid fertilizing in winter.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicMimulus cardinalis is not considered toxic to cats. There are no known toxic effects or physiological impacts associated with this plant.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
Non-toxicMimulus cardinalis is not considered toxic to dogs. There are no known toxic effects or physiological impacts associated with this plant.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
Non-toxicMimulus cardinalis is not considered toxic to humans. There are no known toxic effects or physiological impacts associated with this plant.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: Does Mimulus cardinalis attract pollinators?
A: Yes, it is highly attractive to bees, butterflies, and hummingbirds.
Q: How much water does this plant need?
A: It prefers consistently moist soil but can tolerate some drought once established.
Q: Is this plant toxic to pets?
A: No, it is non-toxic to dogs and cats.
Quick Reference
| Family: | Phrymaceae |
| Care: | moderate |
| Light: | partial shade to full sun |
| Water: | every 3–5 days during active |
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