Overview of Schefflera lukwangulensis (Tennant) Bernardi
Schefflera lukwangulensis is a plant species that is native to tropical Africa, particularly in Angola. It belongs to the Araliaceae family, commonly known as the Ivy family.
Common Names
The plant is known by different common names such as:
- Angolan umbrella tree
- Angola schefflera
- Lukwangula schefflera
Appearance
The Schefflera lukwangulensis is a deciduous plant and can grow up to 6m tall in the wild, with a trunk diameter of about 20 cm. Its young stems and branches are often hairy and segmented, and the foliage is dark green in color. The leaves are large, peltate, and can measure up to 40 cm in diameter. The leaf blade is usually divided into seven to nine, long-pointed leaflets. These are glossy in appearance and sometimes have fine teeth on the edges. The inflorescence is composed of small white flowers that form in clusters. The flowers produce small drupes that ripen to a reddish-orange color.
Uses
The Schefflera lukwangulensis is primarily used for ornamental purposes. It is commonly cultivated in tropical and subtropical gardens and landscapes and can also be grown as a houseplant. In its native Angola, the leaves of the plant are used as a traditional medicinal remedy to treat various ailments, including fever, stomach ulcers, and respiratory infections.
Growth Conditions for Schefflera lukwangulensis (Tennant) Bernardi
Schefflera lukwangulensis (Tennant) Bernardi is a tropical plant species thriving well in warm and humid environments. It belongs to the family Araliaceae and is found in the montane forests of central Africa.
Light Requirements
The plant requires bright indirect light for healthy growth. Direct sunlight may scorch its leaves. Placing the plant near a north-facing window or using artificial light is ideal as it mimics the natural habitat of the plant. Avoid placing the plant in a dimly lit area, as that will weaken its growth.
Temperature Requirements
The optimal temperature for Schefflera lukwangulensis ranges between 20-27°C (68-81°F). The plant cannot tolerate temperatures below 15°C (59°F). Hence, it's essential to keep it away from areas with cold drafts or air conditioning. The high humidity and warmth of a greenhouse or terrarium are ideal growing environments for this plant.
Soil Requirements
The soil required for the plant is well-draining and rich in organic matter. A mixture of peat moss, vermiculite, and perlite is ideal for this plant. The soil's pH range should be neutral to slightly acidic, between 6.0-6.5. A recommended potting mix ratio is 2:1:1 peat moss: perlite: vermiculite.
Water Requirements
The Schefflera lukwangulensis plant requires regular watering and high humidity to thrive. Over-watering may lead to root rot, and the plant cannot tolerate drought. The soil should be kept moist, but not waterlogged, at all times. Using a humidity tray or misting the plant regularly will provide the necessary humidity levels.
Fertilizer Requirements
Fertilizing the Schefflera lukwangulensis plant will aid optimal growth. A balanced liquid fertilizer should be applied every two weeks during the growing season, spring and summer. During the dormant season, fertilizer application should be halted or reduced depending on the environmental conditions.
With proper care, the Schefflera lukwangulensis will grow to be a beautiful and healthy plant.
Cultivation Methods
Schefflera lukwangulensis (Tennant) Bernardi needs to be grown in a warm and well-lit area. It can be kept indoors as long as it is exposed to sufficient sunlight. This plant thrives well in well-drained soils with a pH of 6-7. It's important to ensure that the soil is kept moist but not excessively wet.
Watering Needs
It is important to keep the soil consistently moist but not waterlogged. Always ensure that the soil is dry to the touch before watering the plant. Overwatering can lead to root rot and eventual death of the plant. It's crucial to not let the pot sit in water for an extended period as it can cause soil saturation.
Fertilization
The Schefflera lukwangulensis (Tennant) Bernardi plant should be fertilized at least once a month from spring through fall. You can use a balanced, water-soluble fertilizer to improve the growth of your plant. It is recommended to follow the instructions on the fertilizer and not to put too much as it can burn the roots.
Pruning
Pruning can be done in early spring or any other season once you notice the growth of unwanted branches. It's important to use sharp, clean pruning shears to avoid damaging the plant. Be careful not to over-prune the plant as it can affect its growth.
Propagation of Schefflera lukwangulensis
Schefflera lukwangulensis can be propagated through stem cuttings or seeds.
Stem Cutting Propagation
Stem cutting propagation of Schefflera lukwangulensis is best done in the spring or early summer. Take a 6-inch stem cutting from a healthy, disease-free parent plant, making sure to include at least one node. Remove the lower leaves and dip the cut end in rooting hormone. Place the cutting in a well-draining soil mixture and keep it moist but not waterlogged. Keep the cutting out of direct sunlight and maintain a warm temperature of around 70-75 degrees Fahrenheit. The cutting should root within 3-4 weeks and can be transplanted into a larger pot once it has established a strong root system.
Seed Propagation
Schefflera lukwangulensis can also be propagated through seeds, although this method can be more challenging and time-consuming. Seeds should be harvested when they turn brown and are fully mature. Soak the seeds in water for 24 hours to soften the seed coat and then plant them in a seed starting mix. Keep the soil moist and maintain a warm temperature of around 70-75 degrees Fahrenheit. Germination can take anywhere from a few days to several weeks and the seedlings should be transplanted into larger pots once they have several sets of leaves.
Disease and Pest Management for Schefflera lukwangulensis
Schefflera lukwangulensis is a robust plant, but it is susceptible to various diseases and pests that can damage or even kill it. Identifying the problems is crucial to managing them properly. Here are some common diseases and pests that may affect this plant and some effective ways to manage them.
Diseases
1. Leaf Spot
This is a fungal disease that is caused by damp and poorly-ventilated conditions. The symptoms of leaf spot include small, circular spots or lesions that are usually yellow, brown, or black.
Management: To control the spread of leaf spot, remove the infected leaves, and dispose of them. Also, avoid wetting the leaves while watering the plant. Ensure proper ventilation, and maintain a drier environment around the plant.
2. Root Rot
This disease is caused by waterlogging and poor drainage, which result in the roots to suffocate. The symptoms of root rot include yellow, wilting leaves, and plant death.
Management: To manage root rot, use well-draining soil for planting Schefflera lukwangulensis. Ensure proper drainage, avoid overwatering, and let the soil dry between watering.
Pests
1. Mealybugs
These are small, white, and fluffy insects that look like cotton wool. They suck sap from the leaves, causing them to turn yellow and eventually die.
Management: To manage mealybugs, use a neem oil spray or wipe the plant with a cloth dipped in soapy water. Also, isolate the affected plant to prevent the spread of the pests.
2. Spider Mites
These are tiny pests that leave webs on the underside of the leaves. They suck sap from the plants, causing them to have a stippled appearance.
Management: To control spider mites, use a miticide spray or wipe the leaves with a cloth soaked in soapy water. Also, ensure proper ventilation, as spider mites thrive in hot and dry conditions.
In conclusion, preventing diseases and pests is essential for the health of Schefflera lukwangulensis. A combination of good cultural practices such as improving ventilation and providing well-draining soil, along with timely intervention, is essential for effectively managing the various diseases and pests that can affect this plant.
