Amaranth vs Fern Leaf Lavender Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Amaranth
Amaranthus spp.
Amaranth is a genus of annual or short-lived perennial plants known for their vibrant foliage and grain-like seeds. They vary greatly in appearance, from upright, bushy forms to drooping, tassel-like inflorescences. Many species are cultivated for their edible leaves and seeds, which are highly nutritious. Others are grown as ornamentals for their colorful foliage, which can range from green to red, purple, and gold. Amaranth is primarily an outdoor plant, thriving in full sun and warm temperatures. While some smaller varieties might temporarily survive indoors, they will struggle to achieve their full potential.
Fern Leaf Lavender
Lavandula pinnata
Lavandula pinnata, commonly known as Fern Leaf Lavender, is a perennial shrub characterized by its deeply divided, fern-like leaves, which distinguish it from other lavender species. It typically grows to a height of 1-3 feet. The plant produces fragrant, purple-blue flowers on long stalks, attracting pollinators. While it can be grown in containers, it is primarily an outdoor plant, thriving in sunny, well-drained conditions. People grow it for its unique foliage, aromatic properties, and ornamental value in gardens and landscapes. It is less cold-hardy than English lavender.
Quick Plant Comparison
| Feature | Amaranth | Fern Leaf Lavender |
|---|---|---|
| Light | Full sun (at least 6-8 hours of direct sunlight daily) | Full sun (at least 6-8 hours of direct sunlight daily) |
| Watering | Every 3-7 days, depending on weather and soil drainage | Every 7-14 days, depending on environmental conditions |
| Humidity | 40-60% | 30-50% |
| Temperature | 20-30°C | 18-27°C |
| Care Level | Expert | Expert |
| Growth Rate | Fast | Moderate |
| Max Height | 0.3-2.5m (outdoors); significantly smaller if grown indoors (unlikely to thrive) | 0.3-0.9 meters (1-3 feet) |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Well-draining soil, such as a mix of potting soil, perlite, and compost. | Well-draining, sandy or gravelly soil with a slightly alkaline pH (6.5-8.0) |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 15-30 minutes weekly (weeding, watering, pest control) | 15 minutes weekly |
🔬 Botanical Information — Comparing These Plants
Amaranth
| Scientific Name | Amaranthus spp. |
|---|---|
| Family | Amaranthaceae |
| Native To | Various species originate from different regions worldwide, including North and South America, Africa, and Asia. |
| Also Known As | Amaranth, Pigweed, Love-lies-bleeding |
| Leaves | Amaranth leaves are typically oval or lance-shaped, with smooth or slightly wavy edges. The color varies depending on the species and cultivar, ranging from green to red, purple, and gold. The leaves are often textured and can be slightly hairy. |
| Flowers | Amaranth produces small, densely packed flowers in spikes or tassels. The flowers are typically red, pink, purple, or gold, and they are often quite showy. Amaranth rarely flowers indoors due to insufficient light. |
Fern Leaf Lavender
| Scientific Name | Lavandula pinnata |
|---|---|
| Family | Lamiaceae |
| Native To | Southern Spain, Portugal, and North Africa |
| Also Known As | Fern Leaf Lavender, Jagged Lavender, Cutleaf Lavender |
| Leaves | The leaves of Fern Leaf Lavender are deeply divided and fern-like, with narrow, linear segments. They are typically gray-green in color and have a slightly fuzzy texture. The leaves are highly aromatic, releasing a strong lavender scent when crushed. |
| Flowers | Fern Leaf Lavender produces fragrant, purple-blue flowers on long stalks in summer. While it can flower indoors under ideal conditions (very bright light), it is more likely to flower profusely outdoors. |
📏 Size & Growth — Plant Comparison
Amaranth
Fern Leaf Lavender
🌱 Propagation — Comparing Plant Growth
Amaranth
Methods: Seed
Difficulty: Easy
Tips: Sow seeds directly into the soil in spring after the last frost. Keep the soil moist until germination. Seeds can also be started indoors 6-8 weeks before the last frost.
Fern Leaf Lavender
Methods: Stem cuttings, Seed
Difficulty: Moderate
Tips: Take stem cuttings in spring or summer. Use rooting hormone and plant in well-draining soil. Keep cuttings moist until roots develop. Seeds can be sown in spring after a period of cold stratification.
✨ Benefits & Features — Comparing Plant Value
Amaranth
Amaranth is unique for its combination of edible leaves and seeds, along with its vibrant foliage colors. It is a versatile plant that can be used in both culinary and ornamental applications. Its drought tolerance, once established, makes it a relatively easy plant to maintain in the right conditions.
- ✓ Provides highly nutritious edible leaves and seeds.
- ✓ Attracts pollinators to your garden.
- ✓ Adds vibrant color and visual interest to your outdoor space.
- ✓ Relatively easy to grow from seed.
- ✓ Can be used in cut flower arrangements.
- ⚠️ Toxic to pets
Fern Leaf Lavender
Fern Leaf Lavender is distinguished by its deeply divided, fern-like leaves, which give it a unique texture and appearance compared to other lavender species. It is also less cold-hardy, making it better suited for warmer climates. The foliage releases a strong, pleasant fragrance when touched.
- ✓ Aromatic fragrance enhances relaxation and reduces stress.
- ✓ Attracts beneficial pollinators like bees and butterflies to the garden.
- ✓ Unique fern-like foliage adds visual interest to landscapes.
- ✓ Can be used to make potpourri and other fragrant crafts.
- ✓ Relatively drought-tolerant once established, conserving water.
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Amaranth
Fern Leaf Lavender
🌞 Light Requirements
Amaranth
Full sun (at least 6-8 hours of direct sunlight daily)
Low light tolerant: ❌ No
Fern Leaf Lavender
Full sun (at least 6-8 hours of direct sunlight daily)
Low light tolerant: ❌ No
💧 Watering Needs
Amaranth
Water deeply when the top inch of soil feels dry. Avoid overwatering, as this can lead to root rot. Allow the soil to drain completely after watering. Signs of underwatering include wilting leaves, while overwatering can cause yellowing leaves and stem rot.
Fern Leaf Lavender
Water thoroughly when the top inch of soil is dry. Avoid overwatering, as this can lead to root rot. Allow the soil to dry out slightly between waterings. Signs of underwatering include wilting and dry, crispy leaves. Overwatering symptoms include yellowing leaves and a soggy soil.
🌡️ Temperature & Humidity
Amaranth
Temperature: 20-30°C
Humidity: 40-60%
Fern Leaf Lavender
Temperature: 18-27°C
Humidity: 30-50%
🤔 Which Plant Is Right For You?
Amaranth
Amaranthus spp.Experienced gardeners who want to grow a nutritious and visually striking plant outdoors.
✅ Choose This Plant If...
- You want a highly nutritious edible plant for your garden.
- You desire a plant with vibrant and colorful foliage.
- You want to attract pollinators to your outdoor space.
- You are looking for a fast-growing annual plant.
- You have a sunny outdoor garden space.
❌ Skip This Plant If...
- You have pets that might ingest the plant, as it is toxic.
- You lack a sunny outdoor space.
- You are looking for a low-maintenance indoor plant.
Fern Leaf Lavender
Lavandula pinnataExperienced gardeners who want a unique lavender variety for their outdoor garden in warm climates.
✅ Choose This Plant If...
- You want a unique lavender variety with fern-like foliage.
- You live in a warm climate with plenty of sunshine.
- You want to attract pollinators to your garden.
- You appreciate aromatic plants with a strong fragrance.
- You have experience growing lavender and other Mediterranean herbs.
❌ Skip This Plant If...
- You live in a cold climate with harsh winters.
- You don't have a sunny location to provide adequate light.
- You are a beginner gardener with limited experience.
- You have pets that may ingest the plant.
- You struggle with overwatering plants.
🎯 Quick Verdict
⚡ Key Differences Between These Plants
Amaranth has fast growth, while Fern Leaf Lavender grows moderate.
💡 Pro Tips For Comparing These Plants
Amaranth Care Tips
Amaranth is primarily an outdoor plant that requires full sun and well-draining soil. It is unlikely to thrive indoors due to insufficient light and space. Indoor attempts will require supplemental lighting and careful monitoring of watering and humidity. Toxicity to pets is a significant concern.
- Start seeds indoors 6-8 weeks before the last frost for a head start.
- Provide full sun for optimal growth and color development.
- Water deeply but infrequently, allowing the soil to dry slightly between waterings.
- Fertilize regularly during the growing season with a balanced fertilizer.
- Monitor for pests and diseases and treat promptly.
Fern Leaf Lavender Care Tips
Fern Leaf Lavender is primarily an outdoor plant that requires full sun and well-draining soil. Growing it indoors is challenging due to its high light requirements. It is prone to root rot if overwatered. Requires careful monitoring of light, water, and humidity to thrive indoors.
- Provide at least 6-8 hours of direct sunlight daily for optimal growth and flowering.
- Ensure well-draining soil to prevent root rot, especially in containers.
- Prune after flowering to maintain shape and encourage bushier growth.
- Avoid overwatering; allow the soil to dry out slightly between waterings.
- Fertilize sparingly with a low-nitrogen fertilizer in spring and summer.
⚠️ Common Problems & Solutions — Plant Care Comparison
Amaranth
Fern Leaf Lavender
❓ Frequently Asked Questions — Comparing These Plants
Amaranth
What are the light requirements for Amaranth?
Amaranth demands ample sunlight to thrive and produce its characteristic vibrant blooms. Aim for at least 6-8 hours of direct sunlight daily. Inadequate light can result in leggy growth, faded colors, and reduced flowering. When grown indoors, place Amaranth near a south-facing window where it can receive maximum sunlight exposure. If natural light is insufficient, supplement with grow lights to ensure optimal growth. Rotate the plant regularly to ensure even light exposure on all sides. Be mindful of intense afternoon sun, which can scorch leaves, especially in hot climates. Consider using sheer curtains to filter the light during peak hours. Monitor the plant closely for signs of light stress, such as pale leaves or elongated stems, and adjust its position accordingly.
How do I care for Amaranth?
Amaranth thrives in full sun and well-draining soil. Water regularly, especially during hot weather, keeping the soil consistently moist but not waterlogged. Fertilize every 4-6 weeks during the growing season with a balanced fertilizer to promote healthy growth and vibrant blooms. Deadhead spent flowers to encourage further blooming. Amaranth is relatively low-maintenance, but monitoring for pests and diseases is essential. Provide support for taller varieties to prevent them from bending or breaking. Ensure good air circulation to minimize the risk of fungal issues. Prune as needed to maintain shape and remove any dead or damaged foliage. Consider mulching around the base of the plant to retain moisture and suppress weeds. Regularly inspect the plant for signs of nutrient deficiencies, such as yellowing leaves, and adjust fertilization accordingly.
How do I propagate Amaranth?
Amaranth is primarily propagated from seeds, which are readily available. Sow seeds directly into the garden after the last frost or start them indoors 6-8 weeks beforehand. For direct sowing, scatter seeds thinly over prepared soil and lightly cover with soil. Keep the soil consistently moist until germination, which typically occurs within 7-14 days. Thin seedlings to allow for adequate spacing. Amaranth can also be propagated via stem cuttings, although this method is less common. Take 4-6 inch cuttings from healthy stems, remove the lower leaves, and place them in water or directly into moist potting mix. Rooting should occur within a few weeks. Division is not a common propagation method for Amaranth. Keiki propagation is not applicable to Amaranth.
Fern Leaf Lavender
What are the light requirements for Fern Leaf Lavender?
Fern Leaf Lavender demands ample sunlight to flourish. Aim for at least 6-8 hours of direct sunlight daily. Insufficient light can lead to leggy growth, reduced flowering, and a weakened plant. When growing indoors, place your Fern Leaf Lavender near a south-facing window where it can receive maximum sunlight. If natural light is limited, consider supplementing with a grow light. Rotate the plant regularly to ensure even light exposure on all sides. In hotter climates, some afternoon shade may be beneficial to prevent scorching. Observe the plant’s growth; if it stretches towards the light, it needs more illumination.
How do I care for Fern Leaf Lavender?
Fern Leaf Lavender thrives in full sun and well-draining soil. Water sparingly, allowing the soil to dry out completely between waterings to prevent root rot. Fertilize lightly in the spring with a balanced fertilizer to encourage blooming. Prune after flowering to maintain shape and promote bushier growth. Provide good air circulation to prevent fungal diseases. Protect from frost in colder climates by bringing potted plants indoors or covering them with frost cloth. Deadhead spent flowers to encourage further blooming. Monitor for pests like aphids and spider mites, and treat accordingly. Avoid overwatering, especially during the winter months. Ensure the plant receives at least 6-8 hours of sunlight daily. Repot every 2-3 years into a slightly larger container with fresh, well-draining soil. Provide adequate drainage in containers to avoid waterlogged soil.
How do I propagate Fern Leaf Lavender?
Fern Leaf Lavender can be propagated through stem cuttings, division, and occasionally from seed. For stem cuttings, take a 4-6 inch cutting from a healthy plant in the spring or summer. Remove the lower leaves and dip the cut end in rooting hormone. Plant the cutting in well-draining potting mix and keep it moist. Roots should develop in a few weeks. Division involves separating a mature plant into smaller sections, each with its own roots, and replanting them. This is best done in the spring or fall. While keiki formation is uncommon in lavender, stem layering can be used to encourage root growth along a stem while still attached to the parent plant.
Last updated: April 26, 2026 — Plant care data reviewed and verified by our editorial team.