Polystachya purpureobracteata P.J.Cribb & la Croix - Plant Description
Polystachya purpureobracteata P.J.Cribb & la Croix is a flowering plant species belonging to the Orchidaceae family. It is commonly referred to as the Purple-bracted Polystachya, and its origin can be traced back to Africa, especially in the Eastern parts of the continent, from Ethiopia down to Zimbabwe.
The plant is epiphytic in nature, meaning that it grows on other plants for support, but it derives nutrients and moisture from the air. It has a stem that can grow up to 20 cm long, and it is covered in small, white-green warts. The leaves are numerous, glossy, and fleshy, with an elliptic to oblong shape, and they can grow up to 5 cm long.
The flowers of Polystachya purpureobracteata are arranged in a terminal raceme, with between 5 and 25 flowers per inflorescence. The individual flowers have a purple color, and they are relatively small, with sizes ranging between 1.3 and 1.6 cm. The flowers are highly fragrant, with a sweet vanilla-like scent, and they bloom sporadically throughout the year.
Uses and Cultivation
Polystachya purpureobracteata is a popular ornamental plant, widely cultivated in gardens and greenhouses worldwide for its attractive and fragrant flowers. In some parts of Africa, however, the plant is used for medicinal purposes. The leaves and roots are boiled to prepare herbal remedies for digestive and respiratory ailments, including coughs and colds.
The plant prefers moderate to warm temperatures, with good airflow and high humidity. It can be grown in pots or mounted on a slab of bark, in a well-draining substrate that can retain moisture. The plant requires indirect bright to partial shade, and it should be protected from direct sunlight to prevent scorching of the leaves and flowers.
Appearance
Polystachya purpureobracteata is an attractive plant with glossy, fleshy leaves and small, purple flowers. Its unique growth habit, with an epiphytic nature, makes it a favorite among orchid collectors and enthusiasts. The fragrant flowers, which bloom sporadically throughout the year, add a sweet vanilla-like scent to any garden or indoor space.
Light Requirements
Polystachya purpureobracteata P.J.Cribb & la Croix thrives in bright, indirect light conditions. It needs exposure to dappled sunlight instead of direct sunlight as this can burn its leaves. It can also grow well under fluorescent grow lights or LED Lights set at the correct spectrum of wavelengths.
Temperature Requirements
The plant grows well in temperatures of 65–85°F (18-30°C), as it is native to tropical climates. It can withstand temperature drops to 60°F (15°C) during the night, but it may have stunted growth if subjected to huge temperature changes. It is best to keep the plant away from drafts, air conditioning vents, and heating sources.
Soil Requirements
Polystachya purpureobracteata P.J.Cribb & la Croix thrives in orchid mix soil which can be prepared at home or purchased over the counter. This mixture must be porous and well-draining, with ingredients such as sphagnum moss, perlite, bark, and coconut coir. It is best to avoid heavy potting soils, as these don't provide the required drainage. The plant can thrive when mounted on a wood or cork slab without any soil. It also requires a well-draining pot or container.
Cultivation of Polystachya purpureobracteata P.J.Cribb & La Croix plant
Polystachya purpureobracteata P.J.Cribb & La Croix plant is an orchid found in the tropical regions of the African continent. Cultivating this plant requires specific environmental conditions such as temperature, light, and humidity.
The plant thrives best in an environment that mimics the tropical conditions of its originating habitat. The temperature range should be between 21-25^°C all year round. In addition, high humidity levels between 60-70% are necessary for its growth.
It's also essential to provide Polystachya purpureobracteata P.J.Cribb & La Croix plant with bright but indirect sunlight. Therefore, it's best to place it near an east or west-facing window or any location that receives adequate bright but indirect sunlight.
Watering Needs
Since Polystachya purpureobracteata P.J.Cribb & La Croix plant is an epiphytic orchid, it doesn't require frequent watering. Water it once a week, and provide just enough water to ensure that the roots are thoroughly soaked and excess water drains out of the pot. This will prevent root rot and other fungal diseases that are harmful to the plant.
Fertilization
Polystachya purpureobracteata P.J.Cribb & La Croix plant requires regular fertilization to ensure healthy growth and flowering. Fertilize the orchid every two weeks with a liquid fertilizer specially formulated for orchids. The best way to fertilize an orchid is to mix the fertilizer with water and apply it directly to the plant's roots after watering.
Pruning
Pruning is an essential part of Polystachya purpureobracteata P.J.Cribb & La Croix plant care. The orchid produces new growths on old stems, so it's vital to prune off the old parts of the plant regularly. Cut off any dead or yellow leaves or any stems that are no longer producing flowers.
It's important to sterilize any pruning tools used on the orchid before and after use. This reduces the likelihood of transferring pests or diseases to the plant.
Propagation of Polystachya purpureobracteata P.J.Cribb & la Croix
Polystachya purpureobracteata P.J.Cribb & la Croix is an epiphytic orchid that naturally grows on trees. Although it can be found in the wild, it is also cultivated as an ornamental plant. Propagating this orchid can be done through different methods.
Division
Division is a simple and commonly used method for propagating Polystachya purpureobracteata. This method involves separating the plant into smaller sections, each with at least one healthy pseudobulb and a few leaves. Each section should also have some roots attached to it. These sections are then replanted in individual pots filled with an appropriate potting mix.
Keiki
Polystachya purpureobracteata can produce plantlets known as Keikis. Keikis emerge from the old flower spike. Once they have grown a few roots, they can be carefully separated from the parent plant and potted individually. Keikis usually take about six months to a year to grow large enough to be potted.
Meristem culture
Meristem culture involves growing new plants from a small piece of tissue from the parent plant. The tissue is grown in a sterile culture and given the necessary nutrients to grow into a new plant. Meristem culture is an excellent method for propagating plants that are difficult to root, or if there are few plants available for division.
Seed Propagation
Propagation of Polystachya purpureobracteata by seed is quite challenging. The seed is tiny and does not contain enough nutrients to grow without the help of specific fungi. Sowing the seed on a sterile nutrient-rich agar is advised for successful germination. Once the new plants have sufficient roots, they can be transferred to individual pots.
Propagation of Polystachya purpureobracteata requires patience and attention to detail. With the right conditions and preparation, however, this orchid can quickly be propagated through any of its methods.
Disease and Pest Management for Polystachya purpureobracteata P.J.Cribb & la Croix
Polystachya purpureobracteata P.J.Cribb & la Croix is a beautiful and exotic orchid species that is native to Madagascar. This plant can be vulnerable to various diseases and pests, which can affect its growth and appearance. Therefore, it is necessary to learn about the common diseases and pests of the orchid and how to manage them effectively.
Common Diseases
Fungal and bacterial infections are the most common diseases that can affect Polystachya purpureobracteata P.J.Cribb & la Croix. These infections can cause brown spots or streaks on the leaves, stems, and flowers of the orchid. Overwatering, poor ventilation, and high humidity can create an ideal environment for the growth of these pathogens.
Disease Management
To prevent the occurrence of diseases, it is essential to maintain proper cultural care for the plant. This includes watering the plant only when necessary, ensuring good ventilation, and avoiding splashing water onto the leaves and flowers. If a disease is suspected, the affected parts of the plant should be removed to prevent the spread of the infection. Fungicides and bactericides can also be used to control the disease, as per the instructions provided on the label.
Common Pests
Some of the common pests that can affect Polystachya purpureobracteata P.J.Cribb & la Croix include spider mites, mealybugs, scale insects, and thrips. These pests can cause leaf discoloration, stunted growth, and distorted flowers. They can also transmit viruses, which can be fatal to the plant if not treated early.
Pest Management
The use of insecticidal soaps or oils can be effective in controlling pests in Polystachya purpureobracteata P.J.Cribb & la Croix. These products should be applied regularly to ensure that the pests are kept at bay. Physical removal of pests by gently wiping them off with a cotton swab soaked in alcohol can also be done. It is important to monitor the plant regularly for signs of pest infestation and to take immediate action to avoid further damage.
By staying vigilant and following proper care procedures, it is possible to prevent and manage diseases and pests in Polystachya purpureobracteata P.J.Cribb & la Croix. This will help to ensure that the plant remains healthy and beautiful for years to come.
