Lemon Verbena

aloysia triphylla

Also known as: ["Aloysia citrodora","Lippia citriodora"]

Family: Verbenaceae Genus: Aloysia Category: Herbs & Weeds

Overview

Aloysia triphylla is a deciduous shrub native to South America, known for its intensely lemon-scented leaves and delicate white flowers.

Benefits & Perks

["fragrant flowers","medicinal use","culinary herb","wildlife attractant (bees, butterflies, birds)"]

Botanical Classification

Phylum: Magnoliophyta
Class: Magnoliopsida
Order: Lamiales
Family: Verbenaceae
Genus: Aloysia
Botanical Name: Aloysia triphylla

Plant Characteristics

Basic Information
  • Category: Herbs & Weeds
  • Suitable Location: outdoor garden bed in a sunny spot, or large container
  • Suitable For:
    Beginners Fragrance Lovers Culinary Herb Wildlife Supporters
  • Is Weed: No
  • Allergenicity: low
Environmental Needs
  • Climate: {"temperatureRange":"10–35°C"}
  • Hardiness: {"zones":"9–11"}
  • Misting: every 2–3 days in dry climates, rarely required otherwise
  • Drainage: Fast-draining to prevent root rot.
  • Soil Type: Well-draining, loamy soil with added organic matter.
Maintenance Level
  • Maintenance Level: moderate
  • Toughness Level: moderate
  • Pruning Frequency: Annually in late winter or early spring; light pruning after flowering.
  • Pruning Intensity: Moderate; remove up to one-third of growth if needed.
Care Details

Ideal Sunlight Coverage:
Bright indirect light for 6–8 hours daily; can tolerate full sun with adequate water.

Sunlight Tolerance Tips:
Acclimate gradually to intense sunlight; protect from harsh afternoon sun; adjust placement based on indoor/outdoor conditions.

Warning Signs: Yellowing leaves, root rot, or stunted growth indicate poor soil or drainage issues.

Care Requirements

Care Difficulty
easy

moderate

Sunlight

full sun to partial shade

Rotate plant for even light exposure; use sheer curtains to filter intense sun; avoid direct midday sun indoors.

Watering

every 7–10 days during active growth, reduce in winter

Water thoroughly but infrequently; ensure soil dries between waterings; avoid overwatering.

Soil

well-draining, loamy soil with organic matter

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 65–85°F (18–29°C); tolerates mild frosts but thrives in warm conditions.

Protect from frost; ensure good air circulation; adjust watering for temperature changes.

Fertilizing

every 4–6 weeks during spring and summer, none in fall and winter

Fertilize in spring/summer only; flush soil occasionally to prevent salt buildup; use organic options for slow release.

Propagation

Methods

Stem cuttings in spring or early summer.

Step-by-Step Propagation Guide
  1. Take 4–6 inch cuttings.
  2. Remove lower leaves.
  3. Apply hormone.
  4. Plant in medium.
  5. Keep moist and warm.

Best Time: Spring or early summer when growth is active.

Environment

Warm, humid environment with indirect light.

Medium

Well-draining mix of perlite and peat moss or cactus mix.

Hormone

Rooting hormone recommended for faster rooting.

Timeline

Roots in 3–6 weeks; establish in 2–3 months.

Tools Needed

Pruning shears, rooting hormone, small pots, misting spray bottle.

Quick Tips

Use healthy, non-flowering stems; maintain high humidity; avoid direct sun during rooting.

Pruning & Repotting

Pruning Guide
Method

Selective cutting of stems to shape plant; remove crossing or weak growth.

Pruning Plan

Prune to maintain shape, encourage bushiness, and remove dead or overgrown stems.

Tools

Pruning shears, sharp knife, gloves.

Checklist

Sterilize tools; prune at a 45-degree angle; remove dead/diseased parts; clean up debris.

Repotting Guide
Best Season

Spring before new growth begins.

Pot Size

One size up (e.g., +2 inches in diameter); ensure good drainage.

Method

Use fresh well-draining soil; gently tease out roots; place in slightly larger pot with drainage holes.

Suggestions

Repot every 2–3 years or when roots fill the pot; beneficial for growth and fragrance.

Checklist

Check root bound status; prepare new pot; use fresh soil; water lightly after repotting.

Advanced Care Tips

Watering Mastery
Watering Checklist

Check soil moisture; water deeply; ensure drainage; adjust for season.

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 in the morning to reduce evaporation.

Pro Tip: Use a watering can with a narrow spout to direct water to the roots without wetting foliage.
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 sand for drainage; incorporate compost for fertility; ensure good aeration.

Temperature Stress Management
Signs of Temperature Issues

Yellowing leaves, stunted growth, or leaf drop in extreme cold or heat.

Cold Stress

Slows growth, may cause leaf drop or dieback in prolonged cold.

Solution: Move to a warmer location; provide frost protection; reduce watering in cold.

Hot Stress

Wilting, leaf scorch, or reduced fragrance in excessive heat.

Solution: Provide shade; increase humidity; water more frequently but avoid waterlogging.

Fertilizing Guide
Fertilizing Checklist

Check season; dilute fertilizer; apply to moist soil; avoid foliage contact.

Fertilizing Method

Use balanced liquid fertilizer diluted to half strength every 4–6 weeks during growing season; avoid winter feeding.

Common Problems & Solutions

Yellowing leaves in Aloysia triphylla may indicate nutrient deficiencies, overwatering, or pest infestations, affecting the plant's photosynthetic efficiency and overall health.

Wilting in Aloysia triphylla can result from water stress, either due to drought or overwatering, leading to reduced turgor pressure and impaired nutrient uptake.

Leaf spots on Aloysia triphylla are often caused by fungal or bacterial pathogens, leading to reduced photosynthesis and potential defoliation if left untreated.

Rotting, particularly root rot, can occur in Aloysia triphylla if the soil is poorly drained or excessively moist, causing decay of root tissues and eventual plant death.

Toxicity Warning

Cats
Non-toxic

Lemon verbena is generally non-toxic to cats when ingested in small to moderate amounts. However, like dogs, cats may experience mild gastrointestinal upset if they consume large quantities of the plant or its essential oil.

⚠️ Symptoms:
vomiting diarrhea
🌿 Toxic Parts:
leaves stems
⚡ Toxic If:

if eaten in small to moderate amounts

Monitor your cat's interaction with the plant to prevent excessive ingestion.
Dogs
Non-toxic

Lemon verbena is not considered toxic to dogs when ingested in small to moderate amounts. The plant's essential oil contains compounds that may cause mild gastrointestinal upset if consumed in large quantities.

⚠️ Symptoms:
vomiting diarrhea
🌿 Toxic Parts:
leaves stems
⚡ Toxic If:

if eaten in small to moderate amounts

Keep ingestion to a minimum to avoid potential digestive issues.
Humans
Non-toxic

Aloysia triphylla, commonly known as lemon verbena, is generally considered non-toxic to humans. However, ingestion of large quantities of its essential oil may cause mild gastrointestinal discomfort due to its volatile compounds.

⚠️ Symptoms:
nausea stomach discomfort
🌿 Toxic Parts:
essential oil
⚡ Toxic If:

if eaten in large quantities

Use in moderation, especially when consuming essential oil extracts.

Frequently Asked Questions

Q: Is Lemon Verbena safe for pets?

A: Yes, Lemon Verbena is non-toxic to dogs and cats.

Q: How do I use Lemon Verbena in cooking?

A: The leaves can be steeped for tea, used in desserts, or added to marinades for a lemony flavor.

Q: Does Lemon Verbena require full sun?

A: Yes, it thrives in full sun but can tolerate partial shade.

Quick Reference
Family: Verbenaceae
Care: easy
Light: full sun to partial shade
Water: every 7–10 days during activ
Suitable For: ["beginners","fragrance lovers","culinary herb","wildlife supporters (attracts bees, butterflies, birds)"]
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