Natal Plum vs Purple Waffle Plant Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Natal Plum
Carissa macrocarpa
Carissa macrocarpa, or Natal Plum, is a dense, evergreen shrub or small tree known for its glossy, dark green leaves and fragrant, star-shaped white flowers. It produces edible, plum-like red fruits that are rich in vitamin C. While it can be grown in containers, it's primarily an outdoor plant, thriving in warm climates. People grow it for its ornamental value, edible fruit, and use as a security hedge due to its thorny branches. It's not ideally suited as an indoor plant due to high light requirements and potential size.
Purple Waffle Plant
Hemigraphis alternata
The Purple Waffle Plant is a striking evergreen perennial admired for its textured, puckered leaves that display a vibrant purple underside and a metallic green or silver upper surface. It typically grows to a height of 6-12 inches and spreads similarly. While it can be grown indoors, it thrives in warm, humid environments and bright, indirect light. People grow it for its unique foliage color and texture, adding a touch of the exotic to indoor spaces or shaded gardens. It is not naturally an indoor plant, and requires specific conditions to flourish inside.
Quick Plant Comparison
| Feature | Natal Plum | Purple Waffle Plant |
|---|---|---|
| Light | Full sun to partial shade. Requires at least 6 hours of direct sunlight daily to thrive and produce fruit. | Bright, indirect light. Avoid direct sunlight, which can scorch the leaves. |
| Watering | Every 7-14 days, depending on environmental conditions and pot size. | Every 5-7 days, depending on environmental conditions |
| Humidity | 40-60% | 60-80% |
| Temperature | 18-27°C | 18-24°C |
| Care Level | Expert | Moderate |
| Growth Rate | Moderate | Moderate |
| Max Height | Indoors: Rarely exceeds 1-2 meters. Outdoors: Up to 4 meters. | 6-12 inches |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Well-draining soil mix, such as a combination of potting soil, perlite, and sand. | Well-draining potting mix, such as a mix of peat moss, perlite, and vermiculite. |
| Beginner Friendly | ❌ No | With Caution |
| Weekly Maintenance | 30 minutes weekly (including watering, pruning, and pest control) | 10 minutes weekly |
🔬 Botanical Information — Comparing These Plants
Natal Plum
| Scientific Name | Carissa macrocarpa |
|---|---|
| Family | Apocynaceae |
| Native To | South Africa |
| Also Known As | Natal Plum, Large Num-Num |
| Leaves | The leaves are glossy, dark green, and oval-shaped, measuring 2-5 cm in length. They are arranged oppositely on the stems and have a leathery texture. |
| Flowers | Natal Plum produces fragrant, star-shaped white flowers in spring and summer. While it can flower indoors with sufficient light, fruit production is less common. |
Purple Waffle Plant
| Scientific Name | Hemigraphis alternata |
|---|---|
| Family | Acanthaceae |
| Native To | Java, Indonesia |
| Also Known As | Purple Waffle Plant, Red Ivy, Metal Leaf |
| Leaves | The leaves are ovate to elliptic in shape, with a distinct puckered or 'waffle' texture. They are typically 2-4 inches long and 1-2 inches wide. The upper surface is a metallic green or silver, while the underside is a vibrant purple. The leaves are arranged oppositely along the stems. |
| Flowers | The Purple Waffle Plant rarely flowers indoors. When it does, the flowers are small, white, and inconspicuous, not particularly showy. |
📏 Size & Growth — Plant Comparison
Natal Plum
Purple Waffle Plant
🌱 Propagation — Comparing Plant Growth
Natal Plum
Methods: Stem cuttings, Seed
Difficulty: Moderate
Tips: Take semi-hardwood cuttings in spring or summer. Dip the cut end in rooting hormone and plant in a well-draining potting mix. Keep the soil moist and provide warmth and humidity.
Purple Waffle Plant
Methods: Stem cuttings
Difficulty: Easy
Tips: Take stem cuttings with at least 2-3 nodes. Remove the lower leaves and place the cutting in water or directly into moist potting mix. Keep the cutting in a warm, humid environment until roots develop.
✨ Benefits & Features — Comparing Plant Value
Natal Plum
The Natal Plum is unique for its combination of fragrant flowers, edible fruit, and thorny branches. Its drought tolerance makes it a suitable choice for xeriscaping.
- ✓ Provides edible fruit rich in Vitamin C
- ✓ Offers fragrant flowers that attract pollinators
- ✓ Acts as a natural security barrier due to its thorns
- ✓ Adds an ornamental touch to gardens with its glossy foliage
- ✓ Can be used in traditional medicine (with caution and expert knowledge)
- ⚠️ Toxic to pets
Purple Waffle Plant
The Purple Waffle Plant stands out due to its distinctive foliage, featuring a combination of metallic green or silver on the upper surface and a vibrant purple underside. The puckered, textured leaves add another layer of visual interest, making it a unique addition to any plant collection.
- ✓ Adds a vibrant splash of color to any room.
- ✓ Unique textured foliage creates visual interest.
- ✓ Relatively easy to propagate and share with friends.
- ✓ Can help to increase humidity in small spaces.
- ✓ Provides a calming and aesthetically pleasing element to your home.
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Natal Plum
Purple Waffle Plant
🌞 Light Requirements
Natal Plum
Full sun to partial shade. Requires at least 6 hours of direct sunlight daily to thrive and produce fruit.
Low light tolerant: ❌ No
Purple Waffle Plant
Bright, indirect light. Avoid direct sunlight, which can scorch the leaves.
Low light tolerant: ❌ No
💧 Watering Needs
Natal Plum
Water deeply 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 underwatering include wilting leaves; overwatering includes yellowing leaves and soggy soil.
Purple Waffle Plant
Keep the soil consistently moist, but not soggy. Water when the top inch of soil feels dry to the touch. Overwatering can lead to root rot, indicated by wilting or yellowing leaves. Underwatering will cause the leaves to droop and become crispy.
🌡️ Temperature & Humidity
Natal Plum
Temperature: 18-27°C
Humidity: 40-60%
Purple Waffle Plant
Temperature: 18-24°C
Humidity: 60-80%
🤔 Which Plant Is Right For You?
Natal Plum
Carissa macrocarpaExperienced gardeners in warm climates who want an ornamental shrub with edible fruit, and who can ensure it is kept away from pets.
✅ Choose This Plant If...
- You live in a warm climate with plenty of sunshine.
- You want an ornamental shrub with fragrant flowers and edible fruit.
- You need a natural barrier or security hedge.
- You are an experienced gardener looking for a new challenge.
- You are willing to provide the specific care this plant needs.
❌ Skip This Plant If...
- You have pets or small children due to the plant's toxicity.
- You live in a cold climate with limited sunlight.
- You are a beginner gardener.
- You don't have space for a large shrub.
- You are looking for a low-maintenance indoor plant.
Purple Waffle Plant
Hemigraphis alternataSomeone who enjoys unique foliage and is willing to provide the necessary humidity and light.
✅ Choose This Plant If...
- You love plants with unique foliage and textures.
- You can provide bright, indirect light and high humidity.
- You enjoy a plant that is relatively easy to propagate.
- You want a plant that adds a pop of color to your indoor space.
- You are willing to provide regular care and attention.
❌ Skip This Plant If...
- You cannot provide high humidity.
- You have pets that may ingest the plant.
- You prefer low-maintenance plants that require minimal care.
🎯 Quick Verdict
⚡ Key Differences Between These Plants
Natal Plum is rated Expert care level, while Purple Waffle Plant is Moderate.
💡 Pro Tips For Comparing These Plants
Natal Plum Care Tips
Natal Plum is primarily an outdoor plant and requires significant sunlight to thrive. Growing it indoors is challenging due to its high light needs and potential size. It needs well-draining soil, moderate watering, and occasional fertilization. Toxicity to pets is a major concern.
- Provide at least 6 hours of direct sunlight daily for optimal growth and fruit production.
- Water deeply but infrequently, allowing the soil to dry slightly between waterings.
- Fertilize regularly during the growing season with a balanced fertilizer.
- Prune regularly to maintain shape and encourage new growth.
- Protect from frost in colder climates.
Purple Waffle Plant Care Tips
Purple Waffle Plants require bright, indirect light and high humidity to thrive indoors. Maintaining consistent moisture without overwatering is crucial. They are not particularly difficult, but require more attention than some other common houseplants. Regular fertilization during the growing season will keep the foliage vibrant.
- Maintain high humidity by misting regularly or using a humidifier.
- Provide bright, indirect light to maintain the vibrant purple color.
- Water thoroughly when the top inch of soil is dry, but avoid overwatering.
- Fertilize regularly during the growing season to promote healthy growth.
- Pinch back stems regularly to encourage bushier growth.
⚠️ Common Problems & Solutions — Plant Care Comparison
Natal Plum
Purple Waffle Plant
❓ Frequently Asked Questions — Comparing These Plants
Natal Plum
What are the light requirements for Natal Plum?
Natal Plum requires ample sunlight to flourish and produce its characteristic blooms and fruits. Ideally, it should receive at least 6 hours of direct sunlight per day. In regions with intense sunlight, particularly during the hottest part of the day, providing some afternoon shade can prevent leaf scorch.
How do I care for Natal Plum?
Natal Plum thrives in full sun to partial shade. Ensure at least 6 hours of sunlight daily for optimal flowering and fruit production. Water thoroughly when the top inch of soil feels dry, allowing excess water to drain. Avoid overwatering, which can lead to root rot. Maintain moderate humidity, especially indoors.
How do I propagate Natal Plum?
Natal Plum can be propagated through stem cuttings. Take 4-6 inch stem cuttings from healthy, non-flowering shoots in spring or summer. Remove the lower leaves and dip the cut end in rooting hormone. Plant the cuttings in a well-draining potting mix. Keep the soil moist and provide bright, indirect light. Rooting typically occurs within 4-8 weeks.
Purple Waffle Plant
What are the light requirements for Purple Waffle Plant?
Purple Waffle Plants require bright, indirect light to maintain their vibrant color and healthy growth. Avoid direct sunlight, as it can scorch the leaves and cause them to fade. An east-facing window is often ideal, providing gentle morning light. If you only have access to south- or west-facing windows, place the plant further away from the window or use sheer curtains to filter the light. Insufficient light can lead to leggy growth and a loss of the plant’s characteristic purple hue. Rotate the plant regularly to ensure even light exposure on all sides.
How do I care for Purple Waffle Plant?
Purple Waffle Plants thrive in bright, indirect light and prefer consistently moist soil. Water thoroughly when the top inch of soil feels dry to the touch, ensuring good drainage to prevent root rot. Maintain high humidity levels by misting regularly or placing the plant on a pebble tray filled with water. Fertilize monthly during the growing season (spring and summer) with a balanced liquid fertilizer diluted to half strength. Keep temperatures between 65-80°F (18-27°C). Prune regularly to maintain shape and encourage bushier growth. Repot every 1-2 years in spring, using a well-draining potting mix. Avoid direct sunlight, which can scorch the leaves, and allow for good air circulation to prevent fungal diseases.
How do I propagate Purple Waffle Plant?
Purple Waffle Plants are easily propagated through stem cuttings, division, and air layering. For stem cuttings, take a 4-6 inch cutting from a healthy stem, remove the lower leaves, and place the cutting in water or directly into moist potting mix. Keep the cutting in a warm, humid environment until roots develop (usually within 2-3 weeks). For division, gently separate the root ball of a mature plant into smaller sections and pot each section in its own container. Air layering involves wounding a stem, wrapping it in moist sphagnum moss, and covering it with plastic wrap until roots develop, then cutting the stem below the roots and potting it.
Last updated: April 19, 2026 — Plant care data reviewed and verified by our editorial team.