Kale (Ornamental) vs Kalmia Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Kale (Ornamental)
Brassica oleracea var. sabellica
Ornamental kale is a cool-season biennial grown as an annual for its vibrant, colorful foliage. It is not grown for consumption, though it is related to edible kale. The plant forms a rosette of frilly or ruffled leaves in shades of white, pink, purple, and red. Ornamental kale is primarily an outdoor plant, thriving in cooler temperatures and full sun. It is often used in fall and winter gardens for its striking visual appeal, providing color when many other plants are dormant. While technically possible to grow indoors, it is challenging to provide the necessary light and temperature conditions for optimal growth.
Kalmia
Kalmia latifolia
Kalmia latifolia, or Mountain Laurel, is a broadleaf evergreen shrub native to the eastern United States. It is known for its showy clusters of pink or white cup-shaped flowers that bloom in late spring to early summer. The plant typically grows to a height of 5-15 feet in its natural habitat. Mountain Laurel is primarily an outdoor plant, prized for its ornamental value in gardens and natural landscapes. It is the state flower of Connecticut and Pennsylvania. While beautiful, it's important to note that all parts of the plant are poisonous.
Quick Plant Comparison
| Feature | Kale (Ornamental) | Kalmia |
|---|---|---|
| Light | Full sun to partial shade. Requires at least 6 hours of direct sunlight daily for best color development. | Full sun to partial shade. Requires at least 6 hours of direct sunlight for optimal flowering. |
| Watering | Every 3-7 days depending on environmental conditions and pot size. | Every 7-10 days, depending on weather and soil conditions. |
| Humidity | 40-60% | 40-60% |
| Temperature | 10-18°C | 10-24°C |
| Care Level | Expert | Expert |
| Growth Rate | Moderate | Slow |
| Max Height | Indoors: 15-30 cm (6-12 inches) | N/A - Not suitable for indoor growing |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Well-draining potting mix rich in organic matter. | Well-draining, acidic soil with a pH of 4.5 to 5.5. A mix of peat moss, sand, and compost is suitable. |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 5-10 minutes weekly | 30 minutes weekly during growing season. |
🔬 Botanical Information — Comparing These Plants
Kale (Ornamental)
| Scientific Name | Brassica oleracea var. sabellica |
|---|---|
| Family | Brassicaceae |
| Native To | Europe and Asia |
| Also Known As | Ornamental Kale, Flowering Kale, Decorative Kale |
| Leaves | The leaves of ornamental kale are broad and frilly or ruffled, with varying degrees of texture. They come in a range of colors, including white, pink, purple, and red, often with contrasting veins and edges. The leaves can be quite large, reaching up to 30 cm (12 inches) in diameter. |
| Flowers | Ornamental kale will bolt and produce flowers in its second year, typically after a period of cold exposure. The flowers are small and yellow, similar to other members of the Brassica family. However, it is typically grown as an annual, so flowering is not common. |
Kalmia
| Scientific Name | Kalmia latifolia |
|---|---|
| Family | Ericaceae |
| Native To | Eastern United States |
| Also Known As | Mountain Laurel, Calico Bush, Spoonwood |
| Leaves | The leaves are elliptical, leathery, and evergreen, measuring 2-5 inches long. They are dark green and glossy on the upper surface and paler green underneath. |
| Flowers | The flowers are cup-shaped, about 1 inch wide, and arranged in clusters at the ends of branches. They are typically pink or white, with intricate markings inside the petals. Flowering occurs in late spring to early summer. |
📏 Size & Growth — Plant Comparison
Kale (Ornamental)
Kalmia
🌱 Propagation — Comparing Plant Growth
Kale (Ornamental)
Methods: Seed
Difficulty: Easy
Tips: Sow seeds indoors 6-8 weeks before the last expected frost. Keep soil moist and provide adequate light. Transplant seedlings outdoors after the danger of frost has passed.
Kalmia
Methods: Stem cuttings, layering, seed
Difficulty: Moderate
Tips: Take semi-hardwood cuttings in late spring or early summer. Use rooting hormone and provide high humidity. Layering is another effective method.
✨ Benefits & Features — Comparing Plant Value
Kale (Ornamental)
Ornamental kale is unique for its vibrant, non-traditional colors and frilly or ruffled leaves. Unlike edible kale, it is primarily grown for its aesthetic appeal. Its colors intensify in cooler temperatures, making it a popular choice for fall and winter gardens.
- ✓ Adds vibrant color to gardens during cooler months.
- ✓ Attracts beneficial insects.
- ✓ Provides a unique visual element.
- ✓ Relatively low-maintenance outdoors.
- ✓ Can be used in cut flower arrangements.
- ⚠️ Toxic to pets
Kalmia
Mountain Laurel has unique cup-shaped flowers with intricate details. The flower buds resemble tiny lanterns before they open. It is a long-lived shrub that can provide years of beauty to the landscape.
- ✓ Beautiful flowering shrub
- ✓ Provides habitat for pollinators
- ✓ Evergreen foliage provides year-round interest
- ✓ Native plant supports local ecosystems
- ✓ Adds a touch of elegance to the landscape
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Kale (Ornamental)
Kalmia
🌞 Light Requirements
Kale (Ornamental)
Full sun to partial shade. Requires at least 6 hours of direct sunlight daily for best color development.
Low light tolerant: ❌ No
Kalmia
Full sun to partial shade. Requires at least 6 hours of direct sunlight for optimal flowering.
Low light tolerant: ❌ No
💧 Watering Needs
Kale (Ornamental)
Water thoroughly when the top inch of soil feels dry. Avoid overwatering, which can lead to root rot. Ensure good drainage. Signs of underwatering include wilting leaves; overwatering includes yellowing leaves and a soggy soil.
Kalmia
Water deeply when the top inch of soil feels dry. Avoid overwatering, as this can lead to root rot. Ensure good drainage.
🌡️ Temperature & Humidity
Kale (Ornamental)
Temperature: 10-18°C
Humidity: 40-60%
Kalmia
Temperature: 10-24°C
Humidity: 40-60%
🤔 Which Plant Is Right For You?
Kale (Ornamental)
Brassica oleracea var. sabellicaGardeners looking to add color to their fall and winter gardens in cooler climates.
✅ Choose This Plant If...
- You want vibrant color in your fall and winter garden.
- You live in a cooler climate where it thrives.
- You enjoy unique and visually striking foliage.
- You are looking for a low-maintenance outdoor plant for seasonal displays.
- You want to attract beneficial insects to your garden.
❌ Skip This Plant If...
- You live in a hot climate where it will struggle.
- You are looking for an easy indoor plant.
- You have pets that might ingest it.
- You prefer edible kale varieties for culinary purposes.
Kalmia
Kalmia latifoliaExperienced gardeners in regions with acidic soil who want a beautiful flowering shrub for their landscape.
✅ Choose This Plant If...
- You have acidic soil in your garden
- You live in a region with a suitable climate for mountain laurel
- You want a beautiful flowering shrub for your landscape
- You are an experienced gardener looking for a rewarding challenge
- You want to attract pollinators to your garden.
❌ Skip This Plant If...
- You do not have acidic soil
- You live in an area with very hot, dry summers or extremely cold winters
- You have pets or small children who might ingest the plant.
🎯 Quick Verdict
⚡ Key Differences Between These Plants
Kale (Ornamental) has moderate growth, while Kalmia grows slow.
💡 Pro Tips For Comparing These Plants
Kale (Ornamental) Care Tips
Ornamental kale is primarily an outdoor plant and requires specific conditions to thrive indoors. Providing sufficient light and cool temperatures is crucial. Indoor growth is often less vibrant and shorter-lived than outdoor growth. Requires vigilant monitoring for pests and diseases.
- Provide at least 6 hours of direct sunlight daily for best color development.
- Water thoroughly when the top inch of soil feels dry.
- Fertilize every 2-4 weeks during the growing season with a balanced liquid fertilizer.
- Protect from extreme cold in winter.
- Remove yellowing or damaged leaves to prevent disease.
Kalmia Care Tips
Mountain Laurel is an outdoor plant that is extremely difficult to grow indoors due to its high light requirements, need for acidic soil, and specific temperature and humidity needs. It is not recommended for indoor cultivation. Requires specialized knowledge and conditions to thrive.
- Test your soil pH and amend as needed to maintain acidity.
- Provide adequate drainage to prevent root rot.
- Water deeply but infrequently, allowing the soil to dry slightly between waterings.
- Fertilize in early spring with an acid-loving plant fertilizer.
- Protect from harsh winter winds and heavy snow.
⚠️ Common Problems & Solutions — Plant Care Comparison
Kale (Ornamental)
Kalmia
❓ Frequently Asked Questions — Comparing These Plants
Kale (Ornamental)
What are the light requirements for Kale (Ornamental)?
Ornamental kale needs at least 6 hours of direct sunlight per day to develop its best color. In hotter climates, providing some afternoon shade can prevent the leaves from scorching. If growing indoors, place near a south-facing window or supplement with grow lights. Insufficient light can result in leggy growth and faded colors. Rotate the plant regularly to ensure even light exposure on all sides. If the plant is not getting enough light, the colors will be less intense and the leaves may turn more green than purple or pink.
How do I care for Kale (Ornamental)?
Ornamental kale thrives in cool weather and requires full sun to partial shade. Plant in well-draining soil with a slightly acidic to neutral pH. Water regularly, keeping the soil consistently moist but not waterlogged, especially during dry periods. Fertilize every 2-3 weeks with a balanced liquid fertilizer diluted to half strength, especially during the growing season to encourage vibrant colors. Deadhead any fading or damaged leaves to maintain a tidy appearance and promote new growth. Protect from extreme cold and frost, as this can damage the foliage. Mulch around the base of the plant to retain moisture and suppress weeds. Monitor for pests such as aphids and cabbage worms, and treat accordingly with insecticidal soap or neem oil.
How do I propagate Kale (Ornamental)?
Ornamental kale is typically grown from seed, but it can also be propagated by stem cuttings.
Kalmia
What are the light requirements for Kalmia?
Kalmia prefers partial shade to filtered sunlight. While it can tolerate some morning sun, avoid exposing it to harsh afternoon sun, which can scorch the leaves and damage the delicate blooms. A location that receives dappled sunlight under the canopy of trees is ideal. Insufficient light can result in reduced flowering and leggy growth. Proper light exposure is crucial for healthy foliage and abundant blooms. Rotate potted plants regularly to ensure even light distribution. The intensity of light affects the flower color, with more intense light potentially leading to brighter hues.
How do I care for Kalmia?
Kalmia thrives in partial shade with well-draining, acidic soil. Water deeply when the top inch of soil feels dry, ensuring proper drainage to prevent root rot. Fertilize in early spring with an acid-loving fertilizer, avoiding over-fertilization. Prune lightly after flowering to maintain shape and remove dead or damaged branches. Mulch around the base of the plant with pine needles or shredded bark to retain moisture and suppress weeds. Protect from harsh winter winds, especially in colder climates. Monitor for pests like lace bugs and treat accordingly. Provide good air circulation to prevent fungal diseases. Regular deadheading will encourage new growth. Avoid planting in areas with heavy clay soil.
How do I propagate Kalmia?
Kalmia can be propagated through stem cuttings, layering, or division. For stem cuttings, take 4-6 inch cuttings from new growth in late spring or early summer. Remove the lower leaves and dip the cut end in rooting hormone. Plant the cuttings in a well-draining potting mix and keep them moist and humid. For layering, bend a low-growing branch to the ground and bury a portion of it in the soil. Once roots develop, sever the branch from the parent plant. Division is best done in early spring or fall. Carefully dig up the plant and divide the root ball into smaller sections, ensuring each section has healthy roots and shoots. Replant the divisions in well-draining, acidic soil.
Last updated: April 20, 2026 — Plant care data reviewed and verified by our editorial team.