St. Augustine grass
stenotaphrum dimidiatum
Also known as: ["Carpet grass","St. Augustine grass"]
Overview
A warm-season grass species native to tropical and subtropical regions, often used for lawns and pastures due to its tolerance to heat and humidity.
Benefits & Perks
["drought tolerant","shade tolerant","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Liliopsida |
| Order: | Poales |
| Family: | Poaceae |
| Genus: | Stenotaphrum |
| Botanical Name: | Stenotaphrum dimidiatum |
Plant Characteristics
Basic Information
- Category: Grasses
- Suitable Location: ground cover in warm climates, or container in cooler regions
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"15–35°C"}
- Hardiness: {"zones":"9–11"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Moderate to fast-draining.
- Soil Type: Well-draining loamy soil with organic matter; tolerates sandy or clay soils if amended.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: moderate
- Pruning Frequency: Annually in late winter or early spring; light pruning can be done as needed year-round.
- Pruning Intensity: Moderate; remove up to one-third of old growth if plant is overgrown.
Care Details
Ideal Sunlight Coverage:
Full sun (6–8 hours/day) for vigorous growth; tolerates partial shade but may become less dense.
Sunlight Tolerance Tips:
Acclimate new plants to full sun gradually over 1–2 weeks. Avoid sudden exposure to intense midday sun to prevent scorching. For indoor placement, provide the brightest possible light near a south-facing window.
Care Requirements
Care Difficulty
easymoderate
Sunlight
full sun to partial shade
Rotate plants monthly for even growth; use sheer curtains to filter harsh sunlight; monitor for sunburn signs.
Watering
every 7–10 days during active growth, reduce in winter
Water thoroughly until runoff; allow soil to dry between waterings; avoid frequent shallow watering.
Soil
well-draining, sandy loam with moderate organic content
pH: Slightly acidic to neutral (pH 6.0–7.0).
Avoid waterlogged soil; test pH annually; amend with organic matter for better structure.
Temperature
Thrives in warm conditions (70–90°F / 21–32°C); tolerates heat well but may slow growth below 60°F (15°C).
Protect from frost; ensure good air circulation in heat; adjust watering with temperature changes.
Fertilizing
every 6–8 weeks during growing season
Fertilize in spring and summer only; avoid overfertilizing to prevent salt buildup; water before fertilizing to prevent root burn.
Propagation
Methods
Stem cuttings or division of rhizomes.
Step-by-Step Propagation Guide
- Take 4–6 inch cuttings.
- Remove lower leaves.
- Dip in rooting hormone (optional).
- Plant in moist medium.
- Maintain humidity.
Best Time: Spring or early summer when growth is active.
Environment
Warm (75–85°F / 24–29°C), humid, and bright indirect light.
Medium
Well-draining potting mix (e.g., peat-based with perlite or sand).
Hormone
Optional, but rooting hormone can improve success rates.
Timeline
Roots develop in 3–6 weeks; new growth appears in 2–3 months.
Tools Needed
Pruning shears, rooting hormone, small pots, misting spray bottle.
Quick Tips
Use sharp, clean tools; keep soil consistently moist; provide bottom heat for faster rooting.
Pruning & Repotting
Pruning Guide
Method
Selective thinning of stems; cutting back to just above a leaf node or bud.
Pruning Plan
Prune to maintain shape, remove dead growth, and encourage denser foliage.
Tools
Pruning shears, bypass cutters, gloves.
Checklist
Clean tools before use; make clean cuts; remove dead or damaged stems; sterilize cuts if necessary.
Repotting Guide
Best Season
Spring, before the active growth period begins.
Pot Size
One size larger pot (e.g., +2 inches in diameter).
Method
Remove plant gently; trim any circling roots; place in a slightly larger pot with fresh soil; water lightly.
Suggestions
Repot every 2–3 years or when roots fill the container; beneficial for rejuvenation and growth.
Checklist
Check root bound status; prepare new pot with drainage; trim roots if needed; use fresh soil mix.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water deeply; ensure drainage; adjust frequency seasonally.
How to Apply Water Properly
Water directly at the root zone, ensuring even saturation to a depth of 6–8 inches. Water early in the morning to minimize evaporation and allow foliage to dry. Ensure excess water drains away to prevent waterlogging.
Watering Schedule Tips
Water deeply once per week during active growth; reduce frequency to every 2–3 weeks in winter or drought. Adjust based on rainfall and soil moisture retention.
Soil Improvement
Add compost or aged manure for fertility; mix in perlite or sand for drainage; use mulch to retain moisture.
Temperature Stress Management
Signs of Temperature Issues
Chlorosis or leaf drop in cold stress; wilting or scorching in excessive heat.
Cold Stress
Growth slows or halts; foliage may turn yellow or brown; risk of root damage in prolonged cold.
Solution: Provide frost protection (e.g., row covers, mulch); move potted plants indoors; avoid overwatering in cold conditions.
Hot Stress
Leaf scorch, wilting, or reduced vigor due to excessive heat and drought stress.
Solution: Increase watering frequency; provide partial shade during peak heat; use mulch to retain soil moisture.
Fertilizing Guide
Fertilizing Checklist
Check soil pH; apply fertilizer at correct rate; water after application; avoid fertilizing in winter.
Fertilizing Method
Use a balanced slow-release fertilizer (e.g., 10-10-10) in spring and midsummer. Apply at half the recommended rate for established plants; water thoroughly after application.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicStenotaphrum dimidiatum is not known to be toxic to cats. It does not pose a significant risk if ingested or touched by felines.
⚡ Toxic If:
None
Dogs
Non-toxicStenotaphrum dimidiatum is not known to be toxic to dogs. It does not pose a significant risk if ingested or touched by canines.
⚡ Toxic If:
None
Humans
Non-toxicStenotaphrum dimidiatum is not known to exhibit toxic properties to humans under normal conditions. It is generally considered safe for human contact and consumption.
⚡ Toxic If:
None
Frequently Asked Questions
Q: Is St. Augustine grass suitable for shady areas?
A: Yes, it is one of the more shade-tolerant warm-season grasses.
Q: How often should St. Augustine grass be watered?
A: It requires regular watering, especially during dry periods, but is moderately drought-tolerant once established.
Q: Does St. Augustine grass spread quickly?
A: Yes, it spreads via above-ground stolons, which can help it fill in bare spots but may also require occasional maintenance to control its spread.
Quick Reference
| Family: | Poaceae |
| Care: | easy |
| Light: | full sun to partial shade |
| Water: | every 7–10 days during activ |
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