Sharp-leaved Squill
prospero obtusifolium
Also known as: ["Sharp-leaved Squill","Late Squill"]
Overview
A bulbous perennial with broad, strap-like leaves and bell-shaped flowers, native to the Mediterranean region.
Benefits & Perks
["long-flowering","wildlife attractant (bees, butterflies, birds)","drought tolerant"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Liliopsida |
| Order: | Asparagales |
| Family: | Asparagaceae |
| Genus: | Prospero |
| Botanical Name: | Prospero obtusifolium |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: shaded garden bed or container in a protected spot
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"10–30°C"}
- Hardiness: {"zones":"9–11"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining potting mix with added perlite or sand for aeration.
Maintenance Level
- Maintenance Level: low
- Toughness Level: moderate
- Pruning Frequency: Light pruning every 2–3 months; major pruning annually in late winter or early spring.
- Pruning Intensity: Moderate; remove up to one-third of growth for major pruning.
Care Details
Ideal Sunlight Coverage:
Bright indirect light for 6–8 hours daily; tolerate partial shade but avoid direct sun.
Sunlight Tolerance Tips:
Acclimate gradually to new light conditions, protect from harsh afternoon sun, and adjust indoor placement for seasonal light changes.
Care Requirements
Care Difficulty
easymoderate
Sunlight
partial shade to full shade
Rotate plant for even growth; use sheer curtains to filter direct light; move outdoors in spring/summer for stronger light.
Watering
every 7–10 days during active growth, reduce in winter
Water thoroughly until it drains from the bottom, allow soil to dry between waterings, and avoid overwatering.
Soil
well-drained, humus-rich soil
pH: Slightly acidic to neutral (pH 6.0–7.0).
Ensure pots have drainage holes; avoid heavy clay soils; top-dress with compost annually.
Temperature
Prefers 65–75°F (18–24°C); tolerates 50–85°F (10–29°C) but avoid extreme fluctuations.
Avoid placing near drafty windows; use a humidifier in dry heat; shield from intense summer sun.
Fertilizing
every 4–6 weeks during spring and summer
Fertilize only when actively growing; flush soil occasionally to prevent salt buildup; avoid over-fertilizing.
Propagation
Methods
Stem cuttings in spring or early summer.
Step-by-Step Propagation Guide
- Take a 4–6 inch cutting, remove lower leaves, dip in hormone, plant in medium, keep moist and warm.
Best Time: Spring or early summer when the plant is actively growing.
Environment
Warm (70–75°F), high humidity (70–80%), and indirect light.
Medium
Well-draining mix of peat and perlite or cactus soil.
Hormone
Rooting hormone is optional but recommended for faster rooting.
Timeline
Roots develop in 3–6 weeks; new growth appears in 2–3 months.
Tools Needed
Pruning shears, rooting hormone, small pots, well-draining medium.
Quick Tips
Use healthy, non-flowering stems; maintain consistent moisture; provide bottom heat for faster rooting.
Pruning & Repotting
Pruning Guide
Method
Pinch back tips for bushiness; cut just above a leaf node or bud.
Pruning Plan
Prune to maintain shape, encourage bushier growth, and remove dead or leggy stems.
Tools
Clean, sharp pruning shears or scissors.
Checklist
Sanitize tools, prune dead/leggy stems, shape as desired, clean up debris.
Repotting Guide
Best Season
Early spring before active growth begins.
Pot Size
Increase pot size by 1–2 inches in diameter.
Method
Remove plant gently, trim roots if needed, place in new pot with fresh soil, water lightly.
Suggestions
Repot every 2–3 years or when roots fill the pot; beneficial for growth and soil freshness.
Checklist
Check root bound status, prepare new pot, trim roots, use fresh soil, water lightly.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture, water deeply, ensure drainage, adjust for season.
How to Apply Water Properly
Water directly at the root zone, ensure water penetrates deeply, allow excess to drain, and water in the morning for optimal absorption.
Watering Schedule Tips
Water deeply when the top inch of soil feels dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add perlite or coarse sand for drainage; incorporate organic matter like compost for fertility.
Temperature Stress Management
Signs of Temperature Issues
Wilting, leaf drop, or stunted growth in cold; scorching or leaf burn in excessive heat.
Cold Stress
Slows growth, causes leaf discoloration, and may lead to root damage in prolonged cold.
Solution: Move to a warmer spot, insulate pots, and avoid cold drafts or sudden temperature drops.
Hot Stress
Leaves may curl, wilt, or develop brown edges; growth may slow due to heat stress.
Solution: Provide shade, increase humidity, and water more frequently to combat heat stress.
Fertilizing Guide
Fertilizing Checklist
Check growth phase, use diluted fertilizer, apply during growing season, flush soil periodically.
Fertilizing Method
Use balanced liquid fertilizer diluted to half strength every 4–6 weeks during growing season (spring/summer); cease in fall/winter.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicProspero obtusifolium is not known to be toxic to cats. It does not pose a significant risk if ingested or handled by felines.
⚡ Toxic If:
not applicable
Dogs
Non-toxicProspero obtusifolium is not known to be toxic to dogs. It does not pose a significant risk if ingested or handled by canines.
⚡ Toxic If:
not applicable
Humans
Non-toxicProspero obtusifolium is not known to exhibit toxic properties to humans. It is generally considered safe for handling and consumption.
⚡ Toxic If:
not applicable
Frequently Asked Questions
Q: Is Prospero obtusifolium toxic to pets?
A: Yes, it is toxic to dogs and cats if ingested.
Q: How often should I water Prospero obtusifolium?
A: Water sparingly, allowing the soil to dry between waterings, especially during dormancy.
Q: Does Prospero obtusifolium attract wildlife?
A: Yes, it attracts bees and butterflies with its flowers.
Quick Reference
| Family: | Asparagaceae |
| Care: | easy |
| Light: | partial shade to full shade |
| Water: | every 7–10 days during activ |
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