Scarlet Waterwort
ammannia coccinea
Also known as: ["Fire Moss","Scarlet Loosestrife"]
Overview
A vibrant aquatic or semi-aquatic plant with striking red foliage, often used in aquariums and water gardens.
Benefits & Perks
["long-flowering","aesthetic foliage","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Myrtales |
| Family: | Lythraceae |
| Genus: | Ammannia |
| Botanical Name: | Ammannia coccinea |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: indoor or outdoor container, or garden bed with good drainage
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"15–30°C"}
- Hardiness: {"zones":"8–11"}
- Misting: every 2–3 days to maintain humidity
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining, loamy soil with added organic matter.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: moderate
- Pruning Frequency: As needed, typically every 4–6 weeks during active growth.
- Pruning Intensity: Light to moderate, focusing on shaping and removing weak growth.
Care Details
Ideal Sunlight Coverage:
Bright indirect light for 6–8 hours daily. Can tolerate some direct morning sun but avoid harsh afternoon sun, especially in summer.
Sunlight Tolerance Tips:
Acclimate the plant gradually to direct sunlight if moving from low light. Protect from intense midday sun to prevent scorching. Indoors, place near an east or west-facing window with sheer curtains.
Care Requirements
Care Difficulty
moderateeasy
Sunlight
full sun to partial shade
Rotate plant weekly for even growth; provide dappled light in summer; use sheer curtains to filter intense light.
Watering
every 5–7 days during active growth, reduce in winter
Water thoroughly until it drains from the bottom; avoid letting the plant sit in water; adjust frequency based on season and growth stage.
Soil
moist, fertile, well-draining soil
pH: Slightly acidic to neutral (pH 6.0–7.0).
Use a mix of potting soil and perlite; avoid heavy clay soils; ensure pots have drainage holes.
Temperature
Prefers warm conditions, ideal range 65–85°F (18–29°C). Tolerates mild fluctuations but dislikes prolonged cold or heat extremes.
Avoid sudden temperature changes; protect from drafts; maintain consistent warmth during active growth.
Fertilizing
every 2 weeks during active growth, monthly in winter
Dilute fertilizer to prevent burn; fertilize during active growth; flush soil occasionally to prevent salt buildup.
Propagation
Methods
Stem cuttings are the most reliable method.
Step-by-Step Propagation Guide
- Take a 3–4 inch cutting.
- Remove lower leaves.
- Place in medium.
- Keep moist and warm.
Best Time: Spring or early summer when the plant is actively growing.
Environment
Warm, humid environment with indirect light.
Medium
Well-draining soil mix or water propagation in a jar.
Hormone
Optional but can speed up rooting.
Timeline
Roots typically form in 2–4 weeks; new growth in 4–6 weeks.
Tools Needed
Pruning shears, rooting hormone (optional), small pots or jars.
Quick Tips
Use healthy, non-flowering stems; keep consistently moist; provide bottom heat if possible.
Pruning & Repotting
Pruning Guide
Method
Pinch back tips or cut stems just above a leaf node.
Pruning Plan
Prune to maintain shape, encourage bushier growth, and remove any dead or leggy stems.
Tools
Clean, sharp pruning shears or scissors.
Checklist
Sanitize tools; prune during active growth; remove dead or diseased parts; shape evenly.
Repotting Guide
Best Season
Spring, before the active growth period begins.
Pot Size
Choose a pot one size larger (1–2 inches wider in diameter).
Method
Gently remove the plant; trim any circling roots; place in a new pot with fresh soil; water lightly after repotting.
Suggestions
Repot every 1–2 years or when roots fill the pot. The plant benefits from fresh soil and more space.
Checklist
Check root bound status; prepare new pot with drainage; handle roots gently; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture; water thoroughly; ensure drainage; adjust for season.
How to Apply Water Properly
Water directly at the root zone, ensuring even moisture distribution. Water deeply to encourage root growth, and always allow excess water to drain away. Water in the morning to minimize evaporation and fungal issues.
Watering Schedule Tips
Water regularly during active growth (spring/summer), allowing the top inch of soil to dry between waterings. Reduce frequency in fall/winter to prevent root rot.
Soil Improvement
Add perlite or coarse sand for drainage; incorporate compost for fertility; ensure aeration with chunky ingredients.
Temperature Stress Management
Signs of Temperature Issues
Chlorosis (yellowing leaves), wilting, bud drop, or stunted growth.
Cold Stress
Low temperatures slow growth, cause leaf discoloration, and may lead to root damage or death if prolonged below 50°F (10°C).
Solution: Move to a warmer location; insulate pots; avoid drafty areas; use a space heater if necessary.
Hot Stress
Excessive heat can cause leaf scorch, wilting, and dehydration, especially if combined with low humidity.
Solution: Provide shade during peak heat; increase humidity with misting or a humidifier; ensure adequate watering.
Fertilizing Guide
Fertilizing Checklist
Check growth stage; dilute fertilizer; apply to moist soil; avoid winter feeding.
Fertilizing Method
Use a balanced liquid fertilizer diluted to half strength every 4–6 weeks during spring and summer. Avoid fertilizing in fall and winter.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicAmmannia coccinea is not known to be toxic to cats. There are no documented cases of adverse effects from exposure to this plant.
⚡ Toxic If:
Not applicable
Dogs
Non-toxicAmmannia coccinea is not known to be toxic to dogs. There are no documented cases of adverse effects from exposure to this plant.
⚡ Toxic If:
Not applicable
Humans
Non-toxicAmmannia coccinea is not known to exhibit toxic properties to humans under normal circumstances. It is generally considered safe for handling and consumption.
⚡ Toxic If:
Not applicable
Frequently Asked Questions
Q: Is Ammannia coccinea suitable for beginners?
A: Yes, it is moderately easy to care for, making it suitable for beginners with some experience.
Q: Does this plant require full sun?
A: It thrives in partial to full sun, but can adapt to lower light conditions.
Q: Can Ammannia coccinea be grown in aquariums?
A: Yes, it is commonly used in aquariums due to its vibrant red color and aquatic nature.
Quick Reference
| Family: | Lythraceae |
| Care: | moderate |
| Light: | full sun to partial shade |
| Water: | every 5–7 days during active |
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