Overview
Pachylobus viridiflorus Engl. is a plant species from the genus Pachylobus and the family Apocynaceae. The species is native to southern Africa and grows in the woodland savanna and grasslands of the region.
Common Names
Pachylobus viridiflorus Engl. is commonly referred to as the "green flowered milkwood" and "mitzeeri" among other names.
Appearance
Pachylobus viridiflorus Engl. grows as a large shrub or small tree with a short trunk and branching canopy of leaves. The plant can reach up to 5 meters in height and has a wide growth habit. The bark of the tree is grey and rough. The leaves are simple, opposite, and oval-shaped, with a glossy green appearance. The flowers are small and greenish-white, blooming in dense clusters. The plant produces a small pear-shaped fruit that is green in color and turns yellow when ripened.
Uses
Pachylobus viridiflorus Engl. has a variety of uses in traditional African medicine. The plant is believed to have anti-inflammatory and antibacterial properties and is used to treat various ailments, including diarrhea, fever, and stomach problems. In addition, the plant's bark, leaves, and fruit are used for dyeing textiles. The fruit is also consumed by local people as a food source.
Growth Conditions for Pachylobus viridiflorus Engl.
Pachylobus viridiflorus Engl. is a slow-growing plant native to tropical and subtropical regions of Africa. It is a member of the family Euphorbiaceae and is commonly known as the "thick-barked Pachylobus".
Light Requirements
Pachylobus viridiflorus requires bright but indirect light. This plant cannot tolerate direct sunlight for extended periods, as it may scorch and damage the leaves. This plant thrives in bright shade or partial sunlight, and if grown indoors, it should be placed near a sunny window.
Temperature Requirements
These plants require warm temperatures to grow healthy. The ideal temperature range for Pachylobus viridiflorus is between 60 and 75 degrees Fahrenheit (15 - 24 degrees Celsius). Below 50 degrees Fahrenheit or above 85 degrees Fahrenheit, the plant may become dormant and slow down growth.
Soil Requirements
Pachylobus viridiflorus thrives in well-draining and nutrient-rich soils. The soil should be acidic to slightly alkaline (pH of 5.6 to 7.5). The plant prefers a sandy, loamy soil mixture that retains some moisture while also allowing excess water to drain away from the roots. Adding organic materials like compost or peat moss can help to enrich the soil and provide the necessary nutrients.
Watering Requirements
It is essential to avoid overwatering Pachylobus viridiflorus, as it may cause root rot. The plant should be watered when the soil is dry to the touch. Water the plant thoroughly until water runs out of the pot's drainage holes, then allow it to drain before returning it to its normal location. During the winter, the plant should be watered less frequently, as it enters a period of dormancy.
Fertilizer Requirements
Fertilizing Pachylobus viridiflorus is essential to ensure healthy growth. Apply a balanced liquid fertilizer at half-strength every two weeks during the growing season (spring and summer). In the fall and winter, reduce the frequency of fertilization to once every four weeks.
By providing the right growing conditions of light, temperature, soil, watering, and fertilization, you can ensure a healthy and thriving Pachylobus viridiflorus plant.
Cultivation
Pachylobus viridiflorus Engl., commonly known as the African corkwood, is a Tropical African tree that is often used for its medicinal properties.
It can be cultivated in a wide range of soils like sandy, loamy, and clayey soils. However, it thrives best in well-drained loamy soils with a pH range of 6.5-7.5. Pachylobus viridiflorus grows well in full sun and partial shade conditions. It can also withstand periods of drought.
Watering Needs
Pachylobus viridiflorus does not require frequent watering but watering intervals should be guided by the weather conditions. During the early establishment phase, regular watering can be necessary to ensure that the roots take hold and the plant starts to grow. Once established, it can tolerate periods of drought but prolonged dry spells should be avoided. Watering should be done at the base of the plant to prevent fungal infections from developing.
Fertilization
Pachylobus viridiflorus, like most trees, thrives when given adequate nutrients. Fertilization can be done twice a year, in early spring and late fall. A balanced N-P-K fertilizer with a ratio of 10-10-10 should be used and applied around the base of the tree. Organic fertilizers such as cow dung or compost can also be used and applied once a year. However, care should be taken not to exceed the recommended amounts as over-fertilization can lead to root burning or growth of weak branches.
Pruning
Pruning is not necessary for Pachylobus viridiflorus, but it can be done to maintain shape and remove dead or diseased branches. The best time to prune is during the early spring when the sap is beginning to rise and the tree is still in a dormant phase. It is important to use the right tools, such as a clean, sharp pruning shear, to make a clean cut and avoid damaging the tree. Pruned branches should be removed and destroyed to prevent the spread of diseases.
Propagation of Pachylobus viridiflorus Engl.
Propagation is an essential practice in gardening, especially if you want to share your prized specimens with family, friends, or other garden enthusiasts. Pachylobus viridiflorus can be propagated by various methods, including seeds, cuttings, and division.
Seeds
Pachylobus viridiflorus produces small, round, and flat seeds that require special treatment to germinate. The best time to collect the seeds is when the fruit has turned brown and is starting to split. You can sow the seeds in a well-draining seed starting mix and cover them lightly with soil. Keep the soil evenly moist and place the container in a warm, bright location. Germination can take up to four weeks.
Cuttings
A quicker way to propagate Pachylobus viridiflorus is by taking stem cuttings. Cut a 4-6 inch section of new growth with a sharp, sterilized knife. Remove the lower leaves, leaving only two or three on top. Dip the cut end in rooting hormone powder and plant it in a well-draining potting mix. Keep the soil moist and place the pot in a bright, but not direct sunlight. Rooting usually takes four to six weeks.
Division
Pachylobus viridiflorus can also be propagated by division if the plant has multiple crowns or offsets. Gently tease the roots apart with your fingers or a sterilized knife and replant each section in a well-draining soil mix. Keep the soil moist and protect the plant from direct sunlight until it is established.
Disease and Pest Management for Pachylobus viridiflorus Engl.
Pachylobus viridiflorus Engl., or commonly known as the African corkwood tree, is a beautiful plant sought for its ornamental value. However, it is not immune to the threats of diseases and pests. Timely attendance to these problems is essential in ensuring the plant's healthy growth. Here are some common diseases and pests that might affect the Pachylobus viridiflorus and suggestions on how to manage them:
Diseases
Root Rot: This disease caused by soil-borne fungi can cause the plant to wilt and eventually die. Avoid over-watering and ensure that the soil has excellent drainage to prevent this disease from developing. You can also treat the plant with fungicides.
Leaf Spot: This fungal disease appears as small speckles on the plant's leaves, which will eventually turn yellow or brown and fall off. Improve the plant's air circulation by pruning if possible and avoid getting water in the foliage when watering the plant. Fungicides can control the disease.
Powdery Mildew: This disease is characterized by white powdery spots on the plant's leaves and stems. Fungal spores on the plant's surface cause it, which can spread by wind or insects. Removing affected parts of the plant and applying fungicides can stop the spread of the disease.
Pests
Mealybugs: These insects are small and white, and they tend to cluster on the plant's leaves and stems. They secrete honeydew and can cause the growth of fungal diseases. Wipe off mealybugs using a cloth with alcohol, or use insecticidal soap or horticultural oil to control them.
Aphids: These insects are tiny and can appear in a variety of colors. They suck sap from the plant's leaves and stems, which can cause distortion or malformation of the plant. You can control them by spraying the plant with a strong jet of water, insecticidal soap, or horticultural oil.
Mites: These small animals are not visible to the naked eye. They suck plant sap, causing leaves to become yellow, distorted, or discolored. Prune off affected parts of the plant and use miticides to control them.
Disease and pest management for Pachylobus viridiflorus Engl requires routine inspection, proper sanitation, and prompt action. Early detection and intervention prevent further spread and damage to the plant.
