Jack-by-the-hedge
geranium columbinum
Also known as: ["Geranium molle","Geranium pratense"]
Overview
A small, annual herbaceous plant with delicate pink flowers and deeply lobed leaves.
Benefits & Perks
["wildlife attractant (bees, butterflies, birds)","low maintenance","drought tolerant"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Geraniales |
| Family: | Geraniaceae |
| Genus: | Geranium |
| Botanical Name: | Geranium columbinum |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: garden bed or container in open, airy space
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–30°C"}
- Hardiness: {"zones":"5–9"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining, loamy soil with added organic matter.
Maintenance Level
- Maintenance Level: very low
- Toughness Level: high
- Pruning Frequency: Light pruning every 4–6 weeks during the growing season; major pruning in early spring.
- Pruning Intensity: Light to moderate; avoid heavy pruning unless necessary for rejuvenation.
Care Details
Ideal Sunlight Coverage:
Full sun to partial shade; 6–8 hours of direct sunlight daily, with some afternoon shade in hot climates.
Sunlight Tolerance Tips:
Acclimate plants gradually to intense sunlight; protect from harsh midday sun to prevent scorching; adjust placement based on indoor/outdoor conditions.
Care Requirements
Care Difficulty
very easyeasy
Sunlight
full sun to partial shade
Rotate plant for even growth; provide shade during peak heat; monitor for sunburn signs.
Watering
every 7–10 days during active growth, less frequently in winter
Water thoroughly but allow soil to dry between waterings; avoid overhead watering to prevent leaf diseases.
Soil
well-drained, sandy loam with moderate organic content
pH: Slightly acidic to neutral (pH 6.0–7.0).
Use a mix of potting soil and perlite; avoid heavy clay soils; ensure pots have drainage holes.
Temperature
Prefers cool to moderate temperatures (60–75°F or 15–24°C); tolerates cooler nights but avoids frost.
Avoid sudden temperature changes; protect from frost; adjust watering in extreme heat.
Fertilizing
every 4–6 weeks during growing season, none in winter
Fertilize lightly to avoid salt buildup; flush soil occasionally to prevent nutrient lockout; stop fertilizing in dormancy.
Propagation
Methods
Stem cuttings or seed; stem cuttings are more common for home growers.
Step-by-Step Propagation Guide
- Take a 4–6 inch cutting.
- Remove lower leaves.
- Dip in rooting 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 or 21–24°C), humid, and bright indirect light.
Medium
Well-draining mix of peat and perlite or cactus mix.
Hormone
Optional but recommended for faster rooting.
Timeline
Roots develop in 2–4 weeks; new growth appears in 6–8 weeks.
Tools Needed
Pruners, rooting hormone, small pots, well-draining medium.
Quick Tips
Use healthy, non-flowering stems; maintain humidity with a plastic cover; avoid overwatering.
Pruning & Repotting
Pruning Guide
Method
Pinch back tips to encourage branching; trim leggy stems to promote compact growth.
Pruning Plan
Prune to maintain shape, encourage bushiness, and remove dead or diseased growth.
Tools
Pruning shears, sharp scissors, or your fingers for small stems.
Checklist
Use clean tools; prune dead or damaged growth; shape as desired; dispose of clippings.
Repotting Guide
Best Season
Early spring before active growth begins.
Pot Size
One size larger pot (e.g., +2 inches in diameter); ensure good drainage.
Method
Remove plant gently; trim roots if crowded; place in a slightly larger pot with fresh soil; water lightly.
Suggestions
Repot every 1–2 years or when roots fill the pot; beneficial for growth and soil refreshment.
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 leaves.
How to Apply Water Properly
Water deeply at the base of the plant, ensuring moisture reaches the root zone while allowing excess to drain away; water in the morning to reduce evaporation and fungal risk.
Watering Schedule Tips
Water when the top inch of soil is dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add perlite or sand for drainage; incorporate compost for fertility; ensure good aeration.
Temperature Stress Management
Signs of Temperature Issues
Wilting, yellowing leaves, or stunted growth in extreme heat or cold; leaf drop in sudden temperature shifts.
Cold Stress
Low temperatures slow growth and can cause root damage or death; frost can severely damage or kill the plant.
Solution: Protect from frost with covers or move indoors; ensure good drainage to prevent cold waterlogging.
Hot Stress
Excessive heat can lead to wilting, leaf scorch, or reduced flowering; may require more frequent watering.
Solution: Provide shade during peak heat; increase watering frequency; ensure good air circulation.
Fertilizing Guide
Fertilizing Checklist
Use diluted fertilizer; apply during active growth; avoid winter feeding.
Fertilizing Method
Use a balanced liquid fertilizer diluted to half strength every 4–6 weeks during the growing season (spring to early fall); avoid fertilizing in winter.
Common Problems & Solutions
Toxicity Warning
Cats
Slightly ToxicCats may experience mild gastrointestinal upset if they ingest Geranium columbinum. The plant is not highly toxic but can cause mild symptoms if consumed.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
Slightly ToxicIn dogs, ingestion of Geranium columbinum can lead to mild gastrointestinal upset. The plant is not considered highly toxic but can cause discomfort if consumed.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
Slightly ToxicGeranium columbinum contains compounds that can cause mild gastrointestinal distress and skin irritation upon contact. The plant's effects are generally not severe but can be unpleasant if ingested in quantity.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: Is Geranium columbinum toxic to pets?
A: No, it is non-toxic to dogs and cats.
Q: How easy is it to care for Geranium columbinum?
A: It is very easy to care for, requiring minimal maintenance.
Q: Does Geranium columbinum attract wildlife?
A: Yes, it attracts bees, butterflies, and birds.
Quick Reference
| Family: | Geraniaceae |
| Care: | very easy |
| Light: | full sun to partial shade |
| Water: | every 7–10 days during activ |
Get Expert Care Tips
Download the Plantious app for personalized care reminders and plant identification!
Google Play App Store
