Moss Phlox vs Tarragon Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Moss Phlox
Phlox subulata
Phlox subulata, commonly known as Moss Phlox, is a low-growing, mat-forming perennial. It is primarily grown as a ground cover in gardens and rockeries for its dense, cushion-like foliage and profusion of small, star-shaped flowers in spring. The plant forms a dense carpet of needle-like leaves, typically remaining evergreen in milder climates. It is not naturally an indoor plant and requires very specific conditions to thrive indoors, making it challenging to grow successfully inside. People grow it for its vibrant spring blooms and ability to suppress weeds.
Tarragon
Artemisia dracunculus
Tarragon is a perennial herb known for its distinctive anise-like flavor. It typically grows to a height of 60-120 cm (2-4 feet). French tarragon is prized for culinary use, while Russian tarragon is more vigorous but has a coarser flavor. It is primarily an outdoor plant, grown for its leaves which are used to flavor various dishes. While it can be grown indoors, it requires specific conditions and may not thrive as well as outdoors. People grow tarragon for its culinary uses and aromatic qualities.
Quick Plant Comparison
| Feature | Moss Phlox | Tarragon |
|---|---|---|
| Light | Full sun (at least 6 hours of direct sunlight daily) | Full sun to partial shade outdoors. Indoors, requires at least 6-8 hours of direct sunlight daily, ideally from a south-facing window. |
| Watering | Every 7-10 days outdoors, less frequently indoors if attempted. | Every 1-2 weeks indoors, depending on light and temperature. More frequently outdoors, especially during hot weather. |
| Humidity | 30-50% | 30-50% |
| Temperature | 15-24°C | 18-24°C |
| Care Level | Expert | Expert |
| Growth Rate | Moderate To Fast, Can Be An Aggressive Spreader In Ideal Conditions. | Moderate |
| Max Height | 10-15 cm (indoors unlikely to reach this height) | 30-60 cm (1-2 feet) indoors, up to 120 cm (4 feet) outdoors |
| Pet Safety | ✅ Safe | ❌ Toxic To Pets |
| Soil | Well-drained, sandy or loamy soil | Well-draining soil, such as a mix of potting soil, perlite, and sand. |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 5 minutes weekly (weeding, deadheading) | 15 minutes weekly |
🔬 Botanical Information — Comparing These Plants
Moss Phlox
| Scientific Name | Phlox subulata |
|---|---|
| Family | Polemoniaceae |
| Native To | Eastern and Central USA |
| Also Known As | Moss Phlox, Creeping Phlox, Moss Pink |
| Leaves | The leaves are small, needle-like, and evergreen (in milder climates). They are typically dark green and densely packed along the stems, giving the plant a moss-like appearance. |
| Flowers | It rarely flowers indoors. Outdoors, it produces abundant, star-shaped flowers in spring. The flowers come in a variety of colors, including pink, purple, white, and red. |
Tarragon
| Scientific Name | Artemisia dracunculus |
|---|---|
| Family | Asteraceae |
| Native To | Southern Russia to Western Asia |
| Also Known As | Tarragon, French Tarragon, Russian Tarragon |
| Leaves | The leaves are long, narrow, and lance-shaped, typically 2-8 cm long and 2-10 mm wide. They are smooth, dark green, and have a slightly glossy appearance. The leaves are highly aromatic, with a distinct anise-like scent and flavor. |
| Flowers | Tarragon produces small, greenish-white or yellowish flowers in late summer. However, French tarragon rarely flowers indoors, and even when it does, the flowers are often sterile. |
📏 Size & Growth — Plant Comparison
Moss Phlox
Tarragon
🌱 Propagation — Comparing Plant Growth
Moss Phlox
Methods: Stem cuttings, Division, Seed
Difficulty: Easy
Tips: Take stem cuttings in spring or early summer. Divide established clumps in spring or fall. Seeds can be sown in early spring.
Tarragon
Methods: Stem cuttings, Root division
Difficulty: Moderate
Tips: Take stem cuttings in spring or early summer. Dip the cut end in rooting hormone and plant in moist potting mix. Keep the cuttings in a humid environment until roots develop. For root division, divide the plant in early spring or fall.
✨ Benefits & Features — Comparing Plant Value
Moss Phlox
Moss Phlox forms a dense, cushion-like mat of foliage that is covered in a profusion of small, star-shaped flowers in spring. Its ability to thrive in poor, rocky soils makes it ideal for rock gardens and slopes. The evergreen foliage provides year-round interest.
- ✓ Provides ground cover and suppresses weeds.
- ✓ Attracts pollinators like butterflies.
- ✓ Adds vibrant color to the garden in spring.
- ✓ Deer resistant, reducing garden damage.
- ✓ Drought-tolerant once established, saving water.
- 🐾 Pet Safe
Tarragon
French tarragon, unlike Russian tarragon, is typically propagated by cuttings or division because it rarely produces viable seeds. Its distinct anise-like flavor is highly valued in culinary applications.
- ✓ Fresh herbs for cooking
- ✓ Adds a unique flavor to dishes
- ✓ Aromatic fragrance
- ✓ Can be used in teas and infusions
- ✓ Attractive foliage in a garden setting
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Moss Phlox
Tarragon
🌞 Light Requirements
Moss Phlox
Full sun (at least 6 hours of direct sunlight daily)
Low light tolerant: ❌ No
Tarragon
Full sun to partial shade outdoors. Indoors, requires at least 6-8 hours of direct sunlight daily, ideally from a south-facing window.
Low light tolerant: ❌ No
💧 Watering Needs
Moss Phlox
Water thoroughly when the top inch of soil feels dry. Avoid overwatering, as this can lead to root rot. Ensure good drainage. Signs of overwatering include yellowing leaves and a soggy soil surface. Underwatering is indicated by wilting and dry, brittle foliage.
Tarragon
Water thoroughly when the top inch of soil feels dry. Avoid overwatering, which can lead to root rot. Ensure good drainage. Signs of overwatering include yellowing leaves and a musty smell. Signs of underwatering include wilting and dry, crispy leaves.
🌡️ Temperature & Humidity
Moss Phlox
Temperature: 15-24°C
Humidity: 30-50%
Tarragon
Temperature: 18-24°C
Humidity: 30-50%
🤔 Which Plant Is Right For You?
Moss Phlox
Phlox subulataGardeners looking for a low-maintenance ground cover with vibrant spring blooms.
✅ Choose This Plant If...
- You want a low-maintenance ground cover that suppresses weeds.
- You desire a plant with vibrant spring blooms.
- You need a deer-resistant plant for your garden.
- You want to attract butterflies to your yard.
- You have a sunny rock garden or slope that needs coverage.
❌ Skip This Plant If...
- You don't have a location with full sun.
- You want an easy-to-grow indoor plant.
- You live in a very humid climate prone to fungal diseases.
Tarragon
Artemisia dracunculusExperienced gardeners who want to grow tarragon for culinary use and can provide the necessary conditions.
✅ Choose This Plant If...
- You want fresh tarragon for cooking and are willing to provide ample sunlight.
- You have experience growing herbs and can manage the plant's specific needs.
- You have a sunny location, either indoors or outdoors, where the plant can thrive.
- You enjoy the anise-like flavor of tarragon and use it frequently in your cooking.
- You are looking for a perennial herb that will return year after year.
❌ Skip This Plant If...
- You have pets that might ingest the plant.
- You lack a sunny location to provide adequate light.
- You tend to overwater plants.
- You are a beginner gardener and prefer low-maintenance plants.
🎯 Quick Verdict
⚡ Key Differences Between These Plants
Moss Phlox has moderate to fast, can be an aggressive spreader in ideal conditions. growth, while Tarragon grows moderate.
💡 Pro Tips For Comparing These Plants
Moss Phlox Care Tips
Moss Phlox is primarily an outdoor plant. Growing it indoors is extremely challenging due to its high light requirements and need for well-drained soil. It requires full sun and careful watering to prevent root rot. Indoor success is unlikely without supplemental lighting and precise environmental control.
- Ensure excellent drainage to prevent root rot.
- Provide full sun for optimal flowering.
- Shear lightly after flowering to maintain shape.
- Apply a slow-release fertilizer in early spring.
- Water deeply but infrequently, allowing the soil to dry out between waterings.
Tarragon Care Tips
Tarragon is primarily an outdoor plant and requires specific conditions to thrive indoors. It needs ample sunlight, well-draining soil, and careful watering. Indoor cultivation can be challenging due to the need for intense light and the plant's susceptibility to root rot if overwatered.
- Provide at least 6 hours of direct sunlight daily.
- Use well-draining soil to prevent root rot.
- Water thoroughly when the top inch of soil is dry, but avoid overwatering.
- Fertilize regularly during the growing season.
- Prune regularly to encourage bushier growth and prevent flowering.
⚠️ Common Problems & Solutions — Plant Care Comparison
Moss Phlox
Tarragon
❓ Frequently Asked Questions — Comparing These Plants
Moss Phlox
What are the light requirements for Moss Phlox?
Moss Phlox requires at least six hours of direct sunlight each day to thrive and produce abundant blooms. A south-facing location is ideal, but east or west-facing spots can also work if they receive sufficient sunlight. Insufficient light can lead to leggy growth, reduced flowering, and increased susceptibility to diseases.
How do I care for Moss Phlox?
Moss Phlox thrives in full sun and well-drained soil. Water regularly after planting and during dry spells, but avoid overwatering. Fertilize in early spring with a balanced fertilizer to promote flowering. Prune lightly after blooming to maintain shape and encourage denser growth.
How do I propagate Moss Phlox?
Moss Phlox can be easily propagated through division, stem cuttings, or layering.
Tarragon
What are the light requirements for Tarragon?
Tarragon demands ample sunlight to thrive and produce its flavorful leaves. Aim for at least six hours of direct sunlight per day. A south-facing window is ideal for indoor cultivation, providing the most intense light. If natural light is insufficient, supplement with a grow light.
How do I care for Tarragon?
Tarragon thrives in well-draining soil and requires at least six hours of sunlight daily. Water regularly, allowing the soil to dry slightly between waterings. Avoid overwatering, which can lead to root rot. Fertilize monthly during the growing season with a balanced fertilizer to promote healthy growth and flowering.
How do I propagate Tarragon?
Tarragon can be propagated by division, stem cuttings, or root cuttings. Division is best done in spring or fall. Carefully dig up the plant and divide the root ball into smaller sections, ensuring each section has healthy roots and foliage. Replant the divisions in well-draining soil.
Last updated: April 29, 2026 — Plant care data reviewed and verified by our editorial team.