Lemon Thyme (Thymus X Citriodorus ‘Silver Queen’)

Plant: Table of Contents

Lemon Thyme (Thymus x citriodorus ‘Silver Queen’): A Comprehensive Guide

Thyme, scientifically known as Thymus x citriodorus ‘Silver Queen’, is an aromatic herb that belongs to the mint family, Lamiaceae. It is a popular herb in culinary and medicinal applications and is renowned for its lemon-scented leaves. In this comprehensive guide, we will delve into the various aspects of growing, utilizing, and appreciating the lemon thyme plant, including its culture, uses, water and sunlight requirements, fertilization, soil preferences, pruning, propagation, and much more.

What is Plant Lemon Thyme (Thymus x citriodorus ‘Silver Queen’)?

Lemon thyme, with its botanical name Thymus x citriodorus ‘Silver Queen’, is a delightful herb that exhibits a lemony fragrance and flavor. It is a perennial plant that is characterized by its small, oval-shaped leaves and delicate pale pink to lilac flowers.

Key Takeaways – Lemon Thyme (Thymus x citriodorus ‘Silver Queen’)

Before diving into the specifics of lemon thyme care and cultivation, let’s summarize the key takeaways related to this herb:

  • Lemon thyme is a variety of thyme within the Thymus x citriodorus species, distinguished by its lemon-scented leaves.

  • Also known as ‘Silver Queen’ thyme, this cultivar is particularly coveted for its culinary and aromatic properties.

  • It belongs to the Lamiaceae family and is renowned for imparting a delightful lemon flavor to a range of dishes and beverages.

  • Lemon thyme is widely appreciated for its ornamental value due to its delicate flowers and attractive foliage.


As with any plant, understanding its cultural requirements is fundamental to ensure its optimum growth and vitality. Let’s explore the cultural considerations in cultivating lemon thyme.


Lemon thyme is a versatile herb valued for its numerous applications, spanning culinary usage to ornamental and medicinal purposes.

Culinary Uses
– The lemony flavor and fragrance of this herb make it a popular choice for culinary endeavors, especially in recipes that demand a hint of citrus essence.
– It can be used to flavor a variety of dishes, including meats, seafood, vegetables, sauces, marinades, soups, and stews.
– Lemon thyme is commonly utilized in herb-infused oils, vinaigrettes, and herb butters. Its versatility extends to baked goods and desserts, where its lemony notes can elevate the flavor profile.

Medicinal Uses
– In herbal remedies and traditional medicine, lemon thyme is valued for its potential health benefits. It is believed to possess anti-microbial and antioxidant properties.
– The essential oil derived from lemon thyme is used in aromatherapy for its refreshing and invigorating effects.

Ornamental Uses
– Due to its delicate flowers and pleasing aroma, lemon thyme is often employed in ornamental plantings, herb gardens, and container gardening.


Adequate watering is crucial for the health and vigor of lemon thyme plants. However, it’s important to strike a balance and avoid overwatering, which can lead to root rot.

  • Water Requirements: Lemon thyme thrives in well-drained soil and prefers moderate watering. It is crucial to allow the soil to dry out slightly between waterings to prevent waterlogged conditions.

  • Irrigation Practices: Water the plants deeply but infrequently, allowing for thorough penetration of moisture into the root zone. Aim to water in the morning to facilitate absorption and minimize moisture-related issues.


Proper sunlight exposure is essential for the growth and development of lemon thyme, ensuring robust foliage and abundant aromatic oils.

  • Sunlight Requirements: Lemon thyme flourishes in full sun, basking in at least 6 to 8 hours of direct sunlight each day. Insufficient sunlight can lead to leggy growth and diminished flavor intensity in the leaves.

  • Growth Considerations: In regions with intense heat, providing partial shade during the hottest part of the day can prevent leaf scorch and maintain the plant’s vitality.


Supplemental fertilization can bolster the growth and productivity of lemon thyme, enriching the soil with essential nutrients.

  • Fertilization Schedule: Apply a balanced, all-purpose fertilizer in early spring as new growth emerges. Subsequently, administer a light application of fertilizer every 4 to 6 weeks during the growing season.

  • Organic Amendments: Organic options such as compost, well-rotted manure, or fish emulsion can provide a gentle nutrient boost without the risk of over-fertilization.


The composition and quality of the soil play a pivotal role in determining the health and performance of lemon thyme plants.

  • Soil Type: Lemon thyme thrives in well-drained, loamy soil with a neutral to slightly alkaline pH level. The soil should be airy and friable, facilitating root respiration and nutrient uptake.

  • Improving Soil: Amending the soil with organic matter such as compost or leaf mold enhances its structure and fertility, supporting the robust growth of lemon thyme.


Pruning is an essential maintenance practice that promotes compact growth, encourages branching, and helps maintain the plant’s shape.

  • Pruning Timing: Regular pruning should be conducted in early spring, as the plant emerges from dormancy. This can help stimulate new growth and prevent legginess.

  • Pruning Technique: Utilize sharp, clean scissors or pruning shears to trim back the stems, focusing on removing spent flowers and leggy growth. Additionally, light pruning throughout the growing season can foster a bushier habit and ample leaf production.


Propagating lemon thyme allows for the expansion of your plant collection and can also serve as a means of sharing this delightful herb with fellow gardening enthusiasts.

  • Propagation Methods: Lemon thyme can be propagated through division, cuttings, or seed sowing, with each approach presenting its own set of benefits and considerations.

  • Division: Dividing established plants in spring or fall can yield multiple new plants, each retaining the unique characteristics of the parent plant.

  • Cuttings: Stem cuttings can be taken from healthy, non-flowering shoots and rooted in well-draining, sterile media to establish new plants with genetic consistency.

  • Seed Propagation: While lemon thyme can be grown from seed, it is worth noting that the seeds may not reliably reproduce the exact traits of the parent plant.

Container Popularity

The compact growth habit and ornamental nature of lemon thyme make it an excellent candidate for container gardening, offering ample flexibility and decor-enhancing potential.

  • Container Selection: Opt for porous, well-draining containers that provide adequate room for root development. Terra cotta, wood, or high-quality plastic pots are ideal choices.

  • Growing Medium: Utilize a high-quality potting mix formulated for herbs or succulents, ensuring that it offers proper drainage and adequate aeration for the roots.

  • Placement Considerations: Position the containers in a location that receives sufficient sunlight, as lemon thyme excels in bright, sunny conditions.

Common Diseases

While generally resilient, lemon thyme can be susceptible to certain diseases and disorders that warrant attention to maintain its vigor and vitality.

Disease Diagnosis

Encountering symptoms of disease in lemon thyme necessitates prompt identification and intervention to address the underlying issues.

  • Powdery Mildew: This fungal disease is characterized by the presence of powdery white spots on the foliage, signaling the need for improved air circulation and potential fungicidal treatment.

  • Root Rot: Overly wet conditions can lead to root rot, manifested by wilting, yellowing leaves, and a foul odor emanating from the soil. Addressing the watering regimen is critical to avoiding this condition.

  • Leaf Spot: Circular, dark lesions on the leaves may indicate the presence of leaf spot, which can be managed through sanitary measures and targeted fungicidal treatments.

Common Pests

In addition to diseases, lemon thyme can attract certain pests that may compromise its growth and appearance.

  • Aphids: These small, soft-bodied insects can cluster on the tender new growth of lemon thyme, sapping nutrients and secreting honeydew that can lead to sooty mold formation.

  • Spider Mites: These minuscule arachnids can cause stippling or yellowing of the leaves, with severe infestations potentially resulting in webbing and diminished plant vigor.

  • Thrips: Thrips feed on the foliage, leading to stippling and distortion of the leaves. They can be challenging to control due to their small size and rapid reproductive rate.

Botanist’s Tips

To enhance your success in cultivating lemon thyme and elevating its performance, consider the following botanist’s tips:

  • Promote airflow: Optimal air circulation helps deter fungal diseases and ensures that the foliage remains dry, reducing the risk of infections.

  • Mulching: Applying a layer of organic mulch around the base of the plant can help conserve soil moisture, suppress weed growth, and insulate the roots against temperature fluctuations.

  • Companion Planting: Pairing lemon thyme with companion plants such as lavender, rosemary, or sage can create a harmonious and mutually beneficial environment, deterring pests and enhancing overall garden health.

  • Harvesting: When harvesting leaves for culinary or medicinal purposes, employ sharp scissors to snip the stems, allowing the plant to recover swiftly and continue producing fresh foliage.

Fun Facts

Uncover some intriguing and delightful facts about lemon thyme that illustrate the charm and appeal of this remarkable herb:

  1. Historical Significance: Thyme has a storied history, with references dating back to ancient civilizations. It was revered by the ancient Greeks and Romans for its aromatic and medicinal attributes.

  2. Pollinator Attraction: The delicate flowers of lemon thyme are prized by pollinators, including bees and butterflies, contributing to the vitality of the garden ecosystem.

  3. Fragrant Walkways: The aromatic essence of lemon thyme makes it an excellent choice for planting along pathways and walkways, where brushing against the foliage can release its delightful lemony scent.

  4. Symbolism: Thyme has been associated with various symbolic meanings, including courage, strength, and admiration, adding a layer of significance to its presence in gardens and bouquets.

Links to External Resources

For further exploration and detailed insights into lemon thyme and related topics, consider the following reputable external resources:

  1. National Gardening Association: Lemon Thyme Plant Care
  2. The Herb Society of America: Thymus x citriodorus ‘Silver Queen’
  3. University of Florida Extension: Growing Herbs in Florida: Lemon Thyme
  4. Royal Horticultural Society: Lemon Thyme Cultivation
  5. Missouri Botanical Garden: Thymus x citriodorus ‘Silver Queen’ Plant Profile

In conclusion, lemon thyme (Thymus x citriodorus ‘Silver Queen’) stands as a captivating and valuable addition to herb gardens, culinary pursuits, and landscape designs. By acquainting oneself with its cultural requirements, potential uses, and noteworthy attributes, enthusiasts can achieve gratifying results when cultivating and enjoying this exquisite herb. Whether sought after for its culinary allure, aromatic charm, or ornamental appeal, lemon thyme continues to captivate and elevate garden landscapes and gastronomic creations with its lemon-infused essence and beauty.

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Peter Taylors

Expert botanist who loves plants. His expertise spans taxonomy, plant ecology, and ethnobotany. An advocate for plant conservation, he mentors and educates future botanists, leaving a lasting impact on the field.