Myrsine africana
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Myrsine africana

African-boxwood · Cape myrtle · Small myrsine · Cape beech myrtle

Tier 1 Difficulty: easy Water: low Light: full_sun
Water every
7 days
Temperature
15–37 °C
Soil pH
6–7
Hardiness
Zone 8–11
Click count
706
Observations
324

Description

Source: leafsnap

Myrsine africana, commonly known as African boxwood or Cape myrtle, is a small evergreen shrub belonging to the family Primulaceae. Native to Africa, it thrives in diverse habitats such as forests, woodlands, and rocky areas. The plant features a dense growth habit with glossy, dark green, oval-shaped leaves that have a leathery texture. These leaves are alternately arranged on the stem and are accompanied by small white or pinkish flowers that bloom in clusters during the spring. African boxwood is highly valued for its ornamental appeal, making it an excellent choice for hedges or topiary gardens. It can grow up to 2 meters tall but can be pruned into various shapes based on the desired design. Besides its ornamental value, Myrsine africana possesses medicinal properties useful in traditional medicine for treating ailments like coughs, colds, fever, and stomach problems, among others. The plant prefers well-drained soils with moderate moisture levels but can tolerate drought conditions once established. It thrives best under full sun exposure but can also tolerate partial shade. In conclusion, Myrsine africana is an attractive evergreen shrub with glossy, dark green foliage, making it ideal for hedges or topiary gardens. Additionally, it has medicinal properties that contribute to its use in traditional medicine practices across Africa.

Care Guide

💧 Water Every 7 days

Cape myrtle, which originates from regions with different moisture levels, is moderately drought-tolerant and prefers that the soil dry out slightly between waterings, typically every two weeks. As an evergreen, it requires consistent moisture and thrives best outdoors, where natural rainfall can meet its needs.

Suggested frequency: Every 7 days
FAQ
How should I water my Cape myrtle plant?

Your Cape myrtle doesn't have specific requirements for watering, so you can use any common watering tool. Whether it's a watering can, a hose, or even a cup, it will work perfectly fine. The important thing is to water the soil directly and make sure all areas of the soil are evenly moistened. Using filtered water can be helpful as tap water might have harmful particles. It's also best to use water that is at or slightly above room temperature, as very cold or hot water can shock the Cape myrtle. However, generally, the Cape myrtle is adaptable and responds well to any water you provide.

What should I do if I give too much or too little water to my Cape myrtle plant?

Outdoor plants, especially newly planted ones or plant seedlings, can suffer from lack of watering. It is important to water them regularly for the first few months until their roots are established. Cape myrtle, in particular, can rely on rain once its roots are well-developed. When it comes to Cape myrtles planted in pots, overwatering is a common issue. If you accidentally overwater your plant, take immediate action to minimize the damage. Stop watering it right away and check the roots by removing the plant from its pot. If no root rot is found, you can return the plant to its container. However, if root rot is present, trim the affected roots and consider applying a fungicide. Repot the Cape myrtle using well-draining soil. In the case of underwatering, simply water the Cape myrtle more frequently. It is usually an easy problem to fix. If underwatered, the plant's leaves will droop, dry out, and fall off. However, they will bounce back quickly with sufficient watering. Be sure to adjust your watering frequency as soon as you notice signs of underwatering.

How often do I need to water my Cape myrtle plant?

If you live in an area with regular rainfall, most outdoor plants can grow naturally without additional watering. However, if your area lacks rainfall, it's important to provide your plants with adequate watering every 2 weeks in the spring and fall, and more frequently during the summer. In the winter, when plant growth slows down and water needs decrease, water sparingly or not at all. For young or newly planted Cape myrtle plants, more frequent watering is necessary to help them establish and grow to be adaptable and drought-tolerant. When it comes to potted plants, there are two main approaches to determining watering frequency for Cape myrtle. The first is to follow a fixed watering schedule, ideally once a week or every other week. However, this approach may not always be effective as it doesn't consider the unique conditions of your growing environment. Instead, you can gauge watering frequency based on soil moisture. It's generally best to wait until the top two to four inches of soil, about ⅓ to ½ depth of the pots, have completely dried out before watering again. This method allows you to adjust the watering frequency according to the plant's needs, especially during the summer when water needs are highest.

How much water does my Cape myrtle plant need?

When watering your Cape myrtle, you may be surprised to learn that it does not always require a lot of water. If only a few inches of soil have dried since the last watering, you can support healthy growth by giving it about five to ten ounces of water each time. You can also gauge the water volume based on the moisture in the soil. Take note of how many inches of soil have dried out between waterings. To ensure your Cape myrtle gets the right amount of moisture, water enough to moisten all the dry soil layers since the last watering. If more than half of the soil is dry, it's best to give more water than usual. Keep adding water until you see excess water draining from the pot's holes. If your Cape myrtle is planted in an area with sufficient outdoor rainfall, it may not need additional watering. When the Cape myrtle is young or being established, make sure it receives 1-2 inches of rain per week. As it grows and establishes, it can rely solely on rainwater, but during hot weather or prolonged droughts of 2-3 weeks without rain, consider giving it a full watering to prevent stress.

How can I know if I'm giving enough water to my Cape myrtle?

The Cape myrtle often suffers from overwatering, which can be identified by several signs. Typically, overwatering will cause the leaves to turn yellow and sometimes even fall off. Additionally, the plant's overall structure may shrink and root rot may develop. On the flip side, an underwatered Cape myrtle will also start to wilt and may have brown or brittle leaves. Regardless of whether you observe signs of overwatering or underwatering, it's important to take action and restore the health of your Cape myrtle.

☀️ Light Full sun

The cape myrtle prospers when it gets a substantial amount of sunlight during the day. An inhabitant of sun-rich environments, it grows best under those conditions. However, excessive sunlight can impede its development and cause damage, while too little light can lead to slower growth and diminished vigor.

Ideal: Full sun
FAQ
What are the sunlight requirements for Cape Myrtle?

Cape Myrtle thrives in full sun, which means it needs above 6 hours of sunlight daily to achieve ideal growth. It can also grow in partial sun, receiving about 3-6 hours of sunlight. However, it's crucial to observe the movement of sunlight through your garden to ensure your Cape Myrtle gets the perfect balance of light and shade. Too much sunlight can damage the plant, while too little can stunt its growth and vitality.

How does artificial lighting support Cape Myrtle's growth?

Artificial lighting can be vital for Cape Myrtle's growth when natural sunlight is insufficient, especially in winter or in less sunny spaces. LED lights are recommended for their ability to provide specific wavelengths needed by plants. For full sun plants like Cape Myrtle, 30-50W/sq ft of artificial light is needed. The light source should be placed 12-36 inches above the plant to mimic natural sunlight, and the plant should be exposed to 8-12 hours of light per day to promote faster and healthier growth.

What symptoms indicate Cape Myrtle is receiving inadequate light?

Symptoms of light deficiency in Cape Myrtle include smaller new leaves, leggy or sparse growth with elongated spaces between leaves or stems, early leaf drop, slowed or ceased growth, pale or irregularly colored new leaves, and conditions like chlorosis, sunscald, leaf curling, wilting, and leaf scorching. These symptoms can arise from both too little and too much sunlight exposure, highlighting the importance of balancing the plant's light requirements.

What solutions are recommended for adjusting Cape Myrtle's light exposure?

To adjust light exposure for Cape Myrtle, gradually move plants to sunnier locations each week until they receive at least 6 hours of direct sunlight daily, especially if using a south-facing window. For large or immovable plants, consider artificial lighting for at least 8 hours daily. Outdoors, ensure plants adapt gradually to prevent sunburn. Minimize obstructions by pruning trees or relocating the plant to sunnier spots. Remember, parts of the plant damaged by insufficient light may not recover, but new growth can be healthy with improved light conditions.

🌡️ Temperature 15–37.8°C

Cape myrtle originates from temperate regions and therefore prefers a moderate temperature range of 59 to 100.4 °F (15 to 38 ℃). In colder seasons, it's advisable to keep indoor heat near the plant's lower temperature limit.

Ideal temperature: 15–37.8°C
FAQ
What is the native climate of Cape Myrtle?

Cape myrtle is native to temperate regions, thriving in a moderate temperature range of 59 to 100.4 °F (15 to 38 °C). This plant enjoys conditions that mimic its native habitat, with a preference for maintaining indoor heat near its lower temperature limit during colder seasons. Cape myrtle's ability to tolerate some cold makes it adaptable, not needing special cold protection measures if temperatures stay above -5°C.

What should I do to protect Cape Myrtle from very cold temperatures?

Cape myrtle has some cold tolerance but requires protection when temperatures are expected to drop below -5°C. During such extremely cold weather, it's necessary to temporarily shield the plant. Wrapping it in plastic film, fabric, or other suitable materials can provide the needed insulation. Once the temperature increases, these protective measures should be removed promptly to prevent any potential damage from overheating or restricted ventilation.

How does Cape Myrtle react to temperatures below its tolerance?

Cape myrtle can moderately tolerate low temperatures and prefers conditions above 15°C. During winter, keeping it above -5°C is crucial. If temperatures fall below -10°C, you may notice the leaves drooping. While mild exposure can lead to recoverable stress, severe cold will cause the leaves to wilt and eventually fall off. To assist recovery and protection from further cold damage, trimming off frost-damaged parts and implementing protective measures like wrapping the plant and constructing a wind barrier is advisable.

What measures should be taken if Cape Myrtle is exposed to high temperatures?

During the summer, it's important to ensure that the Cape myrtle remains below 38°C to prevent heat stress. Temperatures exceeding 43°C result in symptoms like lighter leaf color, dry and withered leaf tips, curling leaves, and increased susceptibility to sunburn. To mitigate these issues, trim away sunburned and dried-up parts. Moving the plant to a shaded location or using a shade cloth can protect it from intense midday and afternoon sun. Additionally, watering the plant in the morning and evening helps keep the soil adequately moist.

💨 Humidity
Humidity:
🪴 Soil 6-7
Soil pH: 6-7
🌱 Fertilizer

Proper timing is important for fertilizing Cape myrtle. Apply fertilizer in early spring and continue once a month through early summer. Fertilizer encourages lovely blooms and supplies energy during both dormant periods and times of active growth.

FAQ
Why should I put fertilizer on my Cape myrtle?

To ensure your Cape myrtle's health and attractiveness, regular fertilization is key. By providing the proper nutrients, you can promote vigorous growth and resilience against difficult growing conditions and pests. Paying attention to the foliage, which is a standout feature, is crucial. Maintaining a consistent fertilization schedule specific to your Cape myrtle will result in vibrant and lush leaves.

When should I fertilize my Cape myrtle?

To ensure healthy growth, it is recommended to fertilize your Cape myrtle for the first time in late winter or early spring. This provides the necessary nutrients for the plant to thrive once the weather warms up. If you live in a warm climate region, it can be beneficial to give your Cape myrtle an additional fertilizer feeding in early fall. This not only adds nutrients for the following growing season but also helps the plant withstand winter cold and avoid foliage damage. Fertilizing earlier in the fall ensures that the new branches have enough time to grow and withstand the cold winter.

When is it best to not fertilize my Cape myrtle?

There are a few times of the year when you should avoid fertilizing your Cape myrtle. The first is during the early and mid-winter months when the plant is dormant and doesn't need any nutrients. It's also not recommended to fertilize during late spring and summer because the hot and dry weather can have a negative impact on the plant's response to fertilization. To avoid any problems, it's best to stick to a fertilization schedule that includes feeding only during early spring and early fall.

What kind of fertilizer does my Cape myrtle plant need?

Cape myrtles primarily need nitrogen as the most essential nutrient, but phosphorus and potassium are still important. It is recommended to use a balanced fertilizer, like a 10-10-10, as it provides all three main nutrients in decent amounts. However, for optimal growth, a more specific nutrient ratio, like 10-6-4 with higher nitrogen, can often be more effective. You can choose between granular or liquid-based fertilizers when applying them.

How can I make my Cape myrtle plant grow better?

To fertilize your Cape myrtle, you have two options: using a granular fertilizer or a liquid fertilizer. For the granular fertilizer method, simply sprinkle the granules on the soil at the appropriate time. The slow-release feature of this fertilizer will gradually release nutrients into the soil. It's a good idea to lightly water your Cape myrtle before applying the granular fertilizer. This ensures that the nutrients will be properly absorbed by the plant. The liquid fertilizer approach is less common, but still an option. To use this method, mix the fertilizer with water and then pour the mixture onto the soil around the base of your Cape myrtle. If you want to be sure about the condition of the soil, it can be helpful to conduct a soil test before fertilizing. This will indicate if any pH adjustments are necessary for optimal plant growth.

🪴 Pot & Repot Every 12 months
Suggested frequency: Every 12 months
✂️ Pruning

Cape myrtle boasts dense, evergreen foliage and fragrant flowers. For optimal growth, prune it regularly in the winter when the plant is dormant. Focus on removing dead branches and any crowded areas to improve airflow. This practice encourages vigorous growth in the spring, helps prevent pests, and maintains the plant's aesthetic appeal.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Shrub
Life Cycle
Perennial
Genus
Myrsine
Family
Primulaceae
Hardiness Zone
8-11
Mature Height
2.13 m
Mature Spread
76 cm
Leaf Color
Dark Green
Leaf Type
Evergreen
Flower Color
Pink, White
Flower Size
0.25 cm to 0.51 cm
Bloom Time
Early spring, Mid spring
Planting Time
Spring, Summer, Autumn
Harvest Time
Late summer, Early fall, Mid fall
Native Area
Nepal, Saudi Arabia, Malawi, Somalia, Lesotho, India, Angola, South Africa, Zambia, Sudan, Eritrea, Pakistan, Yemen, Kenya, Uganda, Tanzania, Zimbabwe, China, Afghanistan, Mozambique, Eswatini, Ethiopia, Congo (DRC)

Tags (7)

Common Names (4)

en African-boxwood
en Cape myrtle
en Small myrsine
en Cape beech myrtle