Narrowleaf Bur-reed
sparganium angustifolium
Also known as: ["Narrow-leaved Bur-reed","Narrowleaf Sparganium"]
Overview
A perennial aquatic or semi-aquatic plant with narrow, grass-like leaves and small bur-like fruits.
Benefits & Perks
["wildlife attractant (bees, butterflies, birds)","drought tolerant","shade tolerant"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Liliopsida |
| Order: | Poales |
| Family: | Typhaceae |
| Genus: | Sparganium |
| Botanical Name: | Sparganium angustifolium |
Plant Characteristics
Basic Information
- Category: Herbs & Weeds
- Suitable Location: bog gardens, pond edges, or shallow water gardens
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"0–30°C"}
- Hardiness: {"zones":"3–9"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Moderately well-draining; can tolerate occasional waterlogging but not constant saturation.
- Soil Type: Moist, rich, loamy soil with good organic matter; well-draining but retains moisture.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: moderate
- Pruning Frequency: As needed, typically in late winter or early spring before new growth begins.
- Pruning Intensity: Light to moderate; avoid removing more than one-third of the plant at a time.
Care Details
Ideal Sunlight Coverage:
Full sun to partial shade; 6–8 hours of direct sunlight per day preferred, with some afternoon shade in hot climates.
Sunlight Tolerance Tips:
Acclimate plants gradually to intense sunlight; protect from harsh midday sun; adjust placement based on seasonal light intensity.
Care Requirements
Care Difficulty
moderatemoderate
Sunlight
full sun to partial shade
Rotate plant for even light exposure; use sheer curtains to filter intense light; monitor for signs of sunburn.
Watering
every 7–10 days, allowing soil to dry slightly between waterings
Water thoroughly but infrequently; ensure soil dries slightly between waterings; prioritize root zone hydration.
Soil
moist, rich, loamy soil with good organic content
pH: Slightly acidic to neutral (pH 6.0–7.0).
Avoid heavy clay soils; ensure consistent moisture; test pH periodically.
Temperature
Thrives in cool to moderate temperatures (60–75°F or 15–24°C); tolerates cooler climates but may struggle in extreme heat.
Use shade cloth in summer; protect from frost; maintain consistent temperatures for optimal growth.
Fertilizing
every 4–6 weeks during growing season with balanced liquid fertilizer
Fertilize sparingly to prevent overgrowth; apply fertilizer to moist soil to avoid root burn; flush soil occasionally to prevent salt buildup.
Propagation
Methods
Stem cuttings or division of rhizomes; division is often more reliable for mature plants.
Step-by-Step Propagation Guide
- Take a healthy cutting.
- Remove lower leaves.
- Dip in rooting hormone (optional).
- Plant in moist medium.
- Maintain humidity.
Best Time: Spring or early summer when the plant is actively growing.
Environment
High humidity, indirect light, and consistent warmth (65–75°F or 18–24°C) for rooting.
Medium
Moist, well-draining soil mix with perlite or sand; can also root in water initially.
Hormone
Optional, but rooting hormone can improve success rates for stem cuttings.
Timeline
Roots may develop in 3–6 weeks; establishment can take an additional 1–2 months.
Tools Needed
Pruning shears, rooting hormone, small pots, humidity dome or plastic bag, misting spray bottle.
Quick Tips
Use sharp, sterile tools; keep cuttings out of direct sun; monitor moisture levels closely.
Pruning & Repotting
Pruning Guide
Method
Trim back leggy stems; remove yellowed or dead leaves; shape as desired without over-pruning.
Pruning Plan
Remove dead or damaged foliage to maintain plant health and aesthetics; encourage bushier growth.
Tools
Pruning shears, sharp scissors, gloves, disinfectant for tools.
Checklist
Disinfect tools; prune during dormancy; remove only dead or weak growth.
Repotting Guide
Best Season
Early spring before active growth begins.
Pot Size
Increase pot size by 1–2 inches in diameter; ensure adequate drainage holes.
Method
Remove plant gently; trim roots if necessary; place in a slightly larger pot with fresh, well-draining soil; water thoroughly.
Suggestions
Repot every 2–3 years or when roots outgrow the container; beneficial for container-grown plants to refresh soil.
Checklist
Choose appropriate pot size; prepare fresh soil mix; handle roots carefully; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water early morning or late evening; ensure proper drainage.
How to Apply Water Properly
Water directly at the base of the plant to saturate the root zone; apply until water drains from the bottom; avoid wetting foliage to prevent fungal issues.
Watering Schedule Tips
Water deeply once per week during growing season; reduce frequency in dormant periods; adjust based on rainfall and soil moisture retention.
Soil Improvement
Add compost or peat moss for moisture retention; incorporate perlite or sand for drainage; use mulch to regulate soil moisture.
Temperature Stress Management
Signs of Temperature Issues
Wilting, leaf scorch, stunted growth, or premature flowering in excessive heat; yellowing or browning leaves in cold stress.
Cold Stress
Slows growth, reduces photosynthesis, and may cause root damage in prolonged freezing conditions.
Solution: Provide winter mulch for insulation; move container plants indoors; avoid overwatering in cold weather.
Hot Stress
Leaves may wilt, curl, or develop brown edges; flowering may be reduced or aborted.
Solution: Increase watering frequency; provide shade during peak heat; improve air circulation around the plant.
Fertilizing Guide
Fertilizing Checklist
Check fertilizer type; follow dilution instructions; apply during active growth.
Fertilizing Method
Use a balanced, slow-release fertilizer in early spring; dilute liquid fertilizer to half-strength if needed; avoid fertilizing in winter.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicSparganium angustifolium is not known to be toxic to cats. It does not pose a significant risk if ingested or handled.
⚡ Toxic If:
None
Dogs
Non-toxicSparganium angustifolium is not known to be toxic to dogs. It does not pose a significant risk if ingested or handled.
⚡ Toxic If:
None
Humans
Non-toxicSparganium angustifolium is not known to exhibit toxic properties to humans. It is generally considered safe for handling and consumption.
⚡ Toxic If:
None
Frequently Asked Questions
Q: Is Sparganium angustifolium suitable for ponds?
A: Yes, it is well-suited for pond edges and shallow water gardens.
Q: Does this plant require full sun?
A: It tolerates partial shade but thrives in full sun to partial shade.
Q: How does this plant propagate?
A: It spreads by rhizomes and seeds, often forming colonies in wet habitats.
Quick Reference
| Family: | Typhaceae |
| Care: | moderate |
| Light: | full sun to partial shade |
| Water: | every 7–10 days, allowing so |
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