Arborvitae vs Pimpernel Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Arborvitae
Thuja occidentalis
Thuja occidentalis, commonly known as American Arborvitae, is a coniferous evergreen tree or shrub. It typically grows outdoors to a height of 30-60 feet, forming a dense, pyramidal shape. The foliage consists of scale-like leaves arranged in flattened sprays. While valued for its use in hedges, screens, and ornamental plantings in landscapes, it is not naturally suited for indoor environments due to its high light and humidity requirements and large size. People grow it for its attractive foliage, fast growth, and tolerance of various soil conditions.
Pimpernel
Lysimachia arvensis
Scarlet Pimpernel is a low-growing annual plant typically found in fields, gardens, and disturbed areas. It's characterized by its small, oval-shaped leaves and distinctive bright scarlet (though sometimes pink, orange, or blue) flowers that open only when the sun is shining. The plant rarely exceeds 30 cm in height. While historically used in herbal medicine, it's now primarily considered a weed. It is not typically grown indoors due to its preference for full sun and its weedy nature.
Quick Plant Comparison
| Feature | Arborvitae | Pimpernel |
|---|---|---|
| Light | Full sun to partial shade. Requires at least 6 hours of direct sunlight daily for optimal growth. | Full sun |
| Watering | Every 1-2 weeks, depending on weather and soil drainage. | Every 2-3 days in hot weather, 5-7 days in cooler weather, depending on soil dryness. |
| Humidity | 40-60% | 30-50% |
| Temperature | 10-24°C | 15-25°C |
| Care Level | Expert | Expert |
| Growth Rate | Moderate | Fast |
| Max Height | Rarely grown indoors; outdoors 9-18 meters | 10-30 cm |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Well-draining, slightly acidic soil. A mix of loam, sand, and peat moss is suitable. | Well-draining soil, sandy or loamy soil is preferred. |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 30 minutes monthly (outdoor) | 5 minutes weekly (weeding, removing dead foliage) |
🔬 Botanical Information — Comparing These Plants
Arborvitae
| Scientific Name | Thuja occidentalis |
|---|---|
| Family | Cupressaceae |
| Native To | Eastern North America |
| Also Known As | American Arborvitae, Eastern Arborvitae, White Cedar, Swamp Cedar |
| Leaves | Scale-like, flattened, and arranged in overlapping sprays. Typically bright green, but can turn bronze in winter. Aromatic when crushed. |
| Flowers | Inconspicuous flowers that are rarely seen. Primarily grown for its foliage. |
Pimpernel
| Scientific Name | Lysimachia arvensis |
|---|---|
| Family | Primulaceae |
| Native To | Europe, North Africa, and parts of Asia; naturalized worldwide |
| Also Known As | Scarlet Pimpernel, Red Pimpernel, Shepherd's Weatherglass, Poor Man's Weatherglass |
| Leaves | Small, oval-shaped leaves, typically 1-2 cm long, arranged in opposite pairs along the stem. The leaves are a light green color and have smooth edges. |
| Flowers | Flowers are small, about 1 cm in diameter, and typically bright scarlet, though pink, orange, and blue varieties exist. They open only when the sun is shining and close in response to cloudy weather or impending rain. Flowering occurs primarily in spring and summer. It is unlikely to flower indoors. |
📏 Size & Growth — Plant Comparison
Arborvitae
Pimpernel
🌱 Propagation — Comparing Plant Growth
Arborvitae
Methods: Stem cuttings, Seed
Difficulty: Moderate
Tips: Take semi-hardwood cuttings in late summer. Dip in rooting hormone and plant in well-draining soil. Keep moist and provide indirect light.
Pimpernel
Methods: Seed
Difficulty: Easy
Tips: Sow seeds directly into the soil in spring or fall. Seeds germinate readily in warm, sunny conditions.
✨ Benefits & Features — Comparing Plant Value
Arborvitae
Its dense, evergreen foliage provides year-round privacy and screening. It is relatively fast-growing compared to other evergreens. The scale-like leaves are aromatic when crushed.
- ✓ Provides privacy and screening.
- ✓ Offers year-round greenery.
- ✓ Attracts birds and wildlife.
- ✓ Relatively low-maintenance once established.
- ✓ Can be used to create formal hedges or natural screens.
- ⚠️ Toxic to pets
Pimpernel
The flowers of Scarlet Pimpernel are known to close in response to impending rain or cloudy weather, earning it the name 'Shepherd's Weatherglass'. The flower color can vary, with scarlet being the most common, but pink, orange, and blue varieties also exist.
- ✓ Attracts pollinators
- ✓ Provides ground cover
- ✓ Historically used for weather prediction
- ✓ Adds color to the garden
- ✓ Self-seeds easily
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Arborvitae
Pimpernel
🌞 Light Requirements
Arborvitae
Full sun to partial shade. Requires at least 6 hours of direct sunlight daily for optimal growth.
Low light tolerant: ❌ No
Pimpernel
Full sun
Low light tolerant: ❌ No
💧 Watering Needs
Arborvitae
Water deeply when the top inch of soil feels dry. Avoid overwatering, which can lead to root rot. In containers, ensure proper drainage. Signs of underwatering include browning foliage and drooping. Overwatering symptoms include yellowing leaves and a musty smell from the soil.
Pimpernel
Water thoroughly when the top inch of soil is dry. Avoid overwatering, which can lead to root rot. Allow the soil to dry slightly between waterings. Signs of overwatering include yellowing leaves and a soggy soil surface. Underwatering will cause wilting and dry, brittle leaves.
🌡️ Temperature & Humidity
Arborvitae
Temperature: 10-24°C
Humidity: 40-60%
Pimpernel
Temperature: 15-25°C
Humidity: 30-50%
🤔 Which Plant Is Right For You?
Arborvitae
Thuja occidentalisLandscapers and gardeners looking for a fast-growing evergreen for hedges, screens, or ornamental plantings in outdoor settings.
✅ Choose This Plant If...
- You need a fast-growing evergreen screen or hedge for your yard.
- You want to attract birds to your garden.
- You have well-draining soil and plenty of sunlight.
- You live in a climate with cold winters and hot summers.
- You want a low-maintenance plant once established outdoors.
❌ Skip This Plant If...
- You live in an apartment or have limited outdoor space.
- You have pets that might ingest the foliage.
- You cannot provide at least 6 hours of direct sunlight daily.
- You are looking for an easy indoor plant.
Pimpernel
Lysimachia arvensisGardeners looking for a low-maintenance ground cover in a sunny location, aware of its potential to spread.
✅ Choose This Plant If...
- You want a low-growing ground cover for a sunny area.
- You are interested in a plant with a historical connection to weather forecasting.
- You want to attract pollinators to your garden.
- You have a well-draining, sandy soil.
- You are looking for a plant that self-seeds easily.
❌ Skip This Plant If...
- You have pets that might ingest it.
- You want a plant that thrives indoors.
- You are looking for a low-maintenance houseplant.
🎯 Quick Verdict
⚡ Key Differences Between These Plants
Arborvitae has moderate growth, while Pimpernel grows fast.
💡 Pro Tips For Comparing These Plants
Arborvitae Care Tips
American Arborvitae is primarily an outdoor plant and is very difficult to maintain indoors due to its high light and humidity requirements. It needs full sun and well-draining soil. Indoor cultivation is not recommended.
- Plant in well-draining soil to prevent root rot.
- Water deeply during dry periods, especially in the first year.
- Prune regularly to maintain shape and density.
- Protect from heavy snow and wind in winter.
- Monitor for pests and diseases and treat promptly.
Pimpernel Care Tips
Scarlet Pimpernel is primarily an outdoor plant and is very difficult to cultivate indoors. It requires full sun and well-draining soil. It is considered a weed in many areas and can spread rapidly. Indoor cultivation is not recommended.
- Ensure well-draining soil to prevent root rot.
- Provide full sun for optimal flowering.
- Avoid over-fertilizing, as this can lead to excessive foliage growth.
- Monitor for aphids and treat promptly.
- Allow the plant to self-seed for continuous growth.
⚠️ Common Problems & Solutions — Plant Care Comparison
Arborvitae
Pimpernel
❓ Frequently Asked Questions — Comparing These Plants
Arborvitae
What are the light requirements for Arborvitae?
Arborvitae thrives in bright, indirect light. Direct sunlight can scorch its delicate foliage, so avoid placing it directly in front of south-facing windows. East- or west-facing windows provide optimal light conditions. If you notice the foliage becoming pale or sparse, it may indicate insufficient light. Supplement with artificial grow lights if natural light is limited, especially during winter months. Rotate the plant regularly to ensure all sides receive adequate light. Monitor the plant’s growth and adjust its position as needed to maintain healthy foliage. Insufficient light can lead to legginess and poor growth.
How do I care for Arborvitae?
Indoor Arborvitae require bright, indirect light; avoid direct sunlight, which can scorch the foliage. Water thoroughly when the top inch of soil feels dry, ensuring proper drainage to prevent root rot. Maintain moderate humidity levels; consider using a humidifier or placing the pot on a pebble tray. Fertilize sparingly during the growing season (spring and summer) with a balanced, slow-release fertilizer. Repot every 2-3 years or when the plant becomes root-bound, using a well-draining potting mix. Prune regularly to maintain shape and remove any dead or yellowing foliage. Provide adequate air circulation to prevent fungal diseases. Monitor for pests such as spider mites and aphids, and treat promptly with insecticidal soap. Keep the plant in a stable temperature range, avoiding extreme fluctuations. Rotate the plant occasionally to ensure even growth. Dust leaves regularly to allow for better light absorption.
How do I propagate Arborvitae?
Arborvitae can be propagated through stem cuttings or air layering.
Pimpernel
What are the light requirements for Pimpernel?
Pimpernel generally prefers partial sunlight, receiving about 4-6 hours of direct sunlight per day. However, some varieties can tolerate full sun, especially in cooler climates. Insufficient light can lead to leggy growth and reduced flowering. Indoors, place Pimpernel near a sunny window, such as an east- or west-facing window. Rotate the plant regularly to ensure even light exposure. If natural light is insufficient, supplement with artificial grow lights. Be mindful of intense afternoon sun, which can scorch the leaves, particularly in hot climates.
How do I care for Pimpernel?
Pimpernel thrives in well-draining soil and prefers partial to full sunlight, depending on the specific species. Water regularly, allowing the soil to dry slightly between waterings. Fertilize monthly during the growing season (spring and summer) with a balanced liquid fertilizer to encourage abundant blooming. Prune back spent flowers to promote further flowering. Provide adequate air circulation to prevent fungal diseases. Pimpernel can tolerate a range of temperatures but prefers moderate conditions. Repot in spring if the plant becomes root-bound. Monitor for pests like aphids and spider mites and treat accordingly.
How do I propagate Pimpernel?
Pimpernel can be easily propagated through stem cuttings or division.
Last updated: May 12, 2026 — Plant care data reviewed and verified by our editorial team.