June grass, slender bluegrass, flatgrass
poa compressa
Also known as: ["June grass","slender bluegrass","flatgrass"]
Overview
A slender, tufted perennial grass with flat, narrow leaves and open panicles of small spikelets.
Benefits & Perks
["drought tolerant","shade tolerant","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Liliopsida |
| Order: | Poales |
| Family: | Poaceae |
| Genus: | Poa |
| Botanical Name: | Poa compressa |
Plant Characteristics
Basic Information
- Category: Grasses
- Suitable Location: open meadows, lawns, or naturalized areas
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"−15–30°C"}
- Hardiness: {"zones":"3–8"}
- Misting: rarely required
- Drainage: Fast-draining to moderate-draining.
- Soil Type: Well-draining loam with some organic matter; tolerates poor soils.
Maintenance Level
- Maintenance Level: very low
- Toughness Level: high
- Pruning Frequency: As needed, typically in early spring before new growth begins.
- Pruning Intensity: Light pruning; remove only dead or yellowing leaves.
Care Details
Ideal Sunlight Coverage:
Full sun to partial shade (4–6 hours of direct sunlight daily). Tolerates light shade in hotter climates.
Sunlight Tolerance Tips:
Acclimate plants gradually to intense sunlight; protect from harsh afternoon sun in hot regions; ensure adequate air circulation to prevent scorching.
Care Requirements
Care Difficulty
very easyeasy
Sunlight
full sun to partial shade
Monitor leaf color for sun stress; rotate pots for even light exposure; use shade cloth in extreme heat.
Watering
every 7–10 days during active growth, less frequently in dormant periods
Water thoroughly but infrequently to encourage deep roots; avoid waterlogging; water early morning for efficient absorption.
Soil
well-drained, sandy loam with moderate fertility
pH: Slightly acidic to neutral (pH 6.0–7.0).
Ensure good drainage; amend with organic matter; avoid compacted soil.
Temperature
Prefers cool to moderate temperatures (60–75°F or 15–24°C). Tolerates cold down to 20°F (-6°C) but may struggle in prolonged heat above 85°F (29°C).
Protect from frost; water early to avoid heat stress; adjust care based on seasonal temperature shifts.
Fertilizing
every 3–4 months during spring and summer
Fertilize lightly in spring; avoid high-nitrogen formulas; cease feeding in late summer.
Propagation
Methods
Seed propagation is most common; division of established clumps can also be done in early spring.
Step-by-Step Propagation Guide
- Sow seeds shallowly in seed trays.
- Keep moist.
- Thin seedlings.
- Or divide clumps into smaller sections with roots.
- Replant immediately.
Best Time: Early spring or late summer when temperatures are moderate and growth is active.
Environment
Warm (65–70°F or 18–21°C), humid environment with bright indirect light for seeds; similar conditions for division.
Medium
Well-draining seed starting mix or sandy loam for division.
Hormone
Not necessary for seed propagation; rooting hormone may aid division if roots are damaged.
Timeline
Seeds germinate in 2–4 weeks under ideal conditions; division establishes in 1–2 months.
Tools Needed
Seed trays, potting mix, watering can, pruners (for division).
Quick Tips
Sow seeds in early spring; keep soil consistently moist; divide every 2–3 years to maintain vigor.
Pruning & Repotting
Pruning Guide
Method
Hand-pull dead leaves or use small scissors to snip them off at the base.
Pruning Plan
Minimal pruning needed; focus on removing dead or damaged foliage to maintain appearance and health.
Tools
Hand pruners or scissors, gloves.
Checklist
Remove dead foliage; check for pests; clean tools after use; avoid cutting healthy growth.
Repotting Guide
Best Season
Early spring before active growth begins.
Pot Size
One size larger pot (e.g., +2 inches in diameter).
Method
Gently remove plant, trim any dead roots, place in a slightly larger pot with fresh soil, water lightly, and place in shade for a few days.
Suggestions
Not typically required for established plants in the ground; container-grown plants may need repotting every 2–3 years if root-bound.
Checklist
Choose appropriate pot size; use fresh soil mix; trim roots if necessary; water lightly after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water deeply; ensure drainage; avoid overhead watering; adjust for weather.
How to Apply Water Properly
Apply water directly to the soil at the base of the plant, ensuring even saturation to a depth of 6–8 inches. Allow excess water to drain away, avoiding puddling. Water in the early morning to minimize evaporation.
Watering Schedule Tips
Water deeply once a week during active growth, reducing frequency in winter dormancy. Adjust based on rainfall and soil moisture retention.
Soil Improvement
Add compost or well-rotted manure to enhance fertility and structure; incorporate sand or perlite for drainage in heavy soils.
Temperature Stress Management
Signs of Temperature Issues
Chlorosis or browning of leaf tips in excessive heat; stunted growth or browning in cold stress; wilting in extreme conditions.
Cold Stress
Slows growth and can cause leaf browning or dieback in prolonged freezing temperatures without protection.
Solution: Mulch heavily in winter; protect from harsh winds; avoid overwatering in cold conditions to prevent root rot.
Hot Stress
Leaves may scorch, turn yellow, or wilt; growth may become stunted in prolonged high temperatures.
Solution: Provide partial shade during peak heat; increase watering frequency; ensure good air circulation; use reflective mulch to reduce soil temperature.
Fertilizing Guide
Fertilizing Checklist
Use balanced fertilizer; dilute to half strength; apply in early spring; avoid late-season feeding.
Fertilizing Method
Use a balanced, slow-release fertilizer in early spring at half strength. Avoid fertilizing in late summer or fall to prevent tender growth susceptible to cold.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicPoa compressa is non-toxic to cats. The plant does not produce any harmful compounds that would cause adverse effects in felines.
⚡ Toxic If:
None
Dogs
Non-toxicPoa compressa is not toxic to dogs. This grass species poses no significant health risks if ingested or touched by canines.
⚡ Toxic If:
None
Humans
Non-toxicPoa compressa, commonly known as slender meadow grass, is not considered toxic to humans. It is a non-poisonous plant that is generally safe for human contact and ingestion.
⚡ Toxic If:
None
Frequently Asked Questions
Q: Is Poa compressa suitable for lawns?
A: Yes, it can be used in lawns, especially in cooler climates or shaded areas, but it is often considered a weed in more manicured lawns.
Q: How does Poa compressa spread?
A: It spreads through rhizomes and seeds, often colonizing disturbed areas quickly.
Q: Is Poa compressa invasive?
A: It can be invasive in some regions, particularly in disturbed or neglected areas.
Quick Reference
| Family: | Poaceae |
| Care: | very easy |
| Light: | full sun to partial shade |
| Water: | every 7–10 days during activ |
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