Puncturevine
tribulus terrestris
Also known as: ["Goatshead","Caltrop","Bullhead","Devil’s Thorn","Pegging Weed"]
Overview
A prostrate annual plant with spiny fruits and yellow flowers, often considered an invasive weed in many regions.
Benefits & Perks
["drought tolerant","wildlife attractant (bees, butterflies, birds)","fast growing"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Zygophyllales |
| Family: | Zygophyllaceae |
| Genus: | Tribulus |
| Botanical Name: | Tribulus terrestris |
Plant Characteristics
Basic Information
- Category: Herbs & Weeds
- Suitable Location: outdoor garden bed in open, sunny area
- Suitable For:
- Is Weed: No
- Allergenicity: moderate
Environmental Needs
- Climate: {"temperatureRange":"10–40°C"}
- Hardiness: {"zones":"8–11"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining, sandy loam with some organic matter; cactus or succulent mix is ideal.
Maintenance Level
- Maintenance Level: very low
- Toughness Level: very high
- Pruning Frequency: As needed, typically every 2–3 months or after flowering.
- Pruning Intensity: Light to moderate; avoid heavy pruning unless necessary for shape or health.
Care Details
Ideal Sunlight Coverage:
Full sun (6–8 hours of direct sunlight daily); tolerates intense heat and bright conditions.
Sunlight Tolerance Tips:
Acclimate plants gradually to intense sunlight if moved from shade; avoid sudden exposure to prevent scorching; outdoor placement is ideal for full sun exposure.
Care Requirements
Care Difficulty
very easyeasy
Sunlight
full sun
Use reflective mulch to enhance light reflection; rotate plants for even sun exposure; provide shade during extreme heat if needed.
Watering
every 7–10 days during active growth, less frequently in dormant periods
Water thoroughly but infrequently; ensure soil dries between waterings; avoid overhead watering to prevent fungal issues.
Soil
well-draining, sandy or loamy soil
pH: Slightly acidic to neutral (pH 6.0–7.0).
Use a mix of cactus soil and perlite; avoid heavy clay soils; ensure pots have drainage holes.
Temperature
Warm temperatures (20–30°C or 68–86°F); thrives in hot climates; tolerates mild frosts but prefers warmth.
Monitor temperature extremes; adjust watering based on heat; protect from frost.
Fertilizing
every 4–6 weeks during growing season, none in winter
Apply fertilizer after watering to prevent root burn; use a low-nitrogen formula for flowering plants; flush soil occasionally to prevent salt buildup.
Propagation
Methods
Stem cuttings or seed; stem cuttings are faster and more reliable.
Step-by-Step Propagation Guide
- Take a 4–6 inch cutting.
- Remove lower leaves.
- Dip in rooting hormone (optional).
- Plant in moist medium.
- Keep warm and humid.
Best Time: Spring or early summer when the plant is actively growing.
Environment
Warm, humid environment with bright indirect light; maintain consistent moisture.
Medium
Well-draining potting mix (e.g., cactus mix with perlite or sand)
Hormone
Optional but recommended for faster rooting.
Timeline
Roots develop in 2–4 weeks; new growth appears in 4–6 weeks.
Tools Needed
Pruning shears, rooting hormone, small pots, well-draining soil mix.
Quick Tips
Use healthy, non-flowering stems for cuttings; maintain high humidity with a plastic bag or dome; keep out of direct sun.
Pruning & Repotting
Pruning Guide
Method
Pinch back tips to encourage branching; trim back leggy stems to promote compact growth.
Pruning Plan
Light pruning to maintain shape and encourage bushier growth; remove dead or damaged stems to improve air circulation.
Tools
Pruning shears, sharp scissors, gloves.
Checklist
Sanitize tools; prune dead or diseased parts; shape as desired; dispose of clippings properly.
Repotting Guide
Best Season
Spring, before the active growing season begins.
Pot Size
One size larger pot (e.g., 2–3 cm increase in diameter); ensure good drainage.
Method
Remove plant gently; trim any circling roots; place in a slightly larger pot with fresh, well-draining soil; water thoroughly after repotting.
Suggestions
Repot every 1–2 years or when roots fill the container; beneficial for growth and nutrient uptake.
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; water deeply; ensure drainage; avoid wetting foliage.
How to Apply Water Properly
Water at the base of the plant, ensuring moisture reaches the root zone; allow excess water to drain away; water early in the day to minimize evaporation and fungal growth.
Watering Schedule Tips
Water deeply once the top inch of soil is dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add perlite or coarse sand to improve drainage; incorporate compost for fertility; ensure soil is loose and airy.
Temperature Stress Management
Signs of Temperature Issues
Wilting, yellowing leaves, or stunted growth in cold conditions; leaf scorch or sunburn in excessive heat.
Cold Stress
Slows growth, may cause leaf drop, and can lead to root damage in prolonged cold.
Solution: Provide frost protection in cold climates; move potted plants indoors during freezes; use row covers for garden plants.
Hot Stress
Can cause leaf scorch, wilting, or reduced flowering if temperatures exceed optimal range for extended periods.
Solution: Provide partial shade during peak heat; increase watering frequency; use mulch to retain soil moisture.
Fertilizing Guide
Fertilizing Checklist
Check fertilizer type; dilute correctly; apply during active growth; avoid winter feeding.
Fertilizing Method
Use a balanced, water-soluble fertilizer diluted to half strength; fertilize every 4–6 weeks during growing season (spring and summer); avoid fertilizing in winter.
Common Problems & Solutions
Toxicity Warning
Cats
Slightly ToxicCats may experience mild gastrointestinal upset if they ingest Tribulus terrestris. The saponins in the plant can cause irritation, though severe toxicity is rare.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if ingested
Dogs
Slightly ToxicIn dogs, ingestion of Tribulus terrestris can lead to mild gastrointestinal upset due to the presence of saponins. While not highly toxic, large amounts may cause discomfort or allergic reactions.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if ingested
Humans
Slightly ToxicTribulus terrestris contains saponins and other bioactive compounds that can cause mild gastrointestinal distress and allergic reactions in humans when ingested in significant amounts. The plant is generally considered safe for topical use but may cause irritation in sensitive individuals.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten in large quantities
Frequently Asked Questions
Q: Is Tribulus terrestris toxic to pets?
A: It is mildly toxic to dogs and cats if ingested.
Q: Why is Tribulus terrestris considered a weed?
A: It spreads rapidly, has spiny fruits that can puncture tires, and competes with desirable plants for resources.
Q: Does Tribulus terrestris have any medicinal uses?
A: Yes, it has been used in traditional medicine for various purposes, including as a potential testosterone booster.
Quick Reference
| Family: | Zygophyllaceae |
| Care: | very easy |
| Light: | full sun |
| Water: | every 7–10 days during activ |
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