Origin and Common Names
Cyrtandra calpidicarpa, also known as Rock's Cyrtandra, is a plant species belonging to the family of Gesneriaceae. It is native to the Hawaiian Islands, particularly found in the volcanic mountain regions of Kauai and Ni’ihau. This plant species has several common names, including Pua Lawelawe, Pua Naio, and Mountain Cyrtandra.General Appearance
The Cyrtandra calpidicarpa is a shrub-like plant that has a woody stem and can reach a height of up to 2 meters. Its branches are green and have large, gray-green, leathery leaves. The leaves are ovate or lanceolate with a length of about 12 centimeters and a width of approximately 5 centimeters. The edges of the leaves are slightly toothed, and the tips are pointed. The flowers of this species are tubular with a length of about 2 centimeters. The colors of the flowers range from pinkish to purplish and are arranged in clusters on the end of the branches.Uses
Cyrtandra calpidicarpa has several traditional uses in Hawaiian culture. It is believed that this plant has medicinal properties for the treatment of various ailments, including headaches, stomachaches, and sore throats. In addition, the leaves and flowers of this plant are used in making traditional leis or garlands. This plant has also become popular among collectors and gardeners, as its unique foliage and beautiful flowers make it an excellent ornamental plant. Cyrtandra calpidicarpa is best grown in partial to full shade and well-draining soil. It requires moderate watering and fertilization to maintain its growth and appearance.Light Requirements
Cyrtandra calpidicarpa requires moderate to high levels of indirect light to thrive. It is best to place the plant near a window that receives filtered sunlight, or under fluorescent lights if grown indoors. Direct exposure to intense sunlight can damage the leaves and cause them to wilt.
Temperature Requirements
The ideal temperature range for Cyrtandra calpidicarpa is between 60°F to 80°F (15°C to 27°C). The plant cannot tolerate temperatures below 50°F (10°C) or above 85°F (29°C). It is important to maintain a consistent temperature as sudden fluctuations can shock the plant and cause leaves to drop.
Soil Requirements
Cyrtandra calpidicarpa requires well-draining soil that is rich in organic matter. A mix of peat moss, perlite, and sand works well for this plant. The soil pH should be acidic, with a range of 4.5 to 6.0. It is important to provide adequate drainage as the plant is susceptible to root rot in waterlogged soil.
Cultivation Methods for Cyrtandra Calpidicarpa
Cyrtandra Calpidicarpa is a tropical plant that requires warm temperatures and high humidity to thrive. It does well in partial sun or light shade and prefers well-draining, slightly acidic soil that is rich in organic matter.
If you plan to grow Cyrtandra Calpidicarpa indoors, then make sure to choose a spot with bright, indirect light. You can use a well-draining potting mix that is specifically formulated for tropical plants.
When planting your Cyrtandra Calpidicarpa outside, make sure to choose a sheltered location away from strong winds or frost.
Watering Needs for Cyrtandra Calpidicarpa
Cyrtandra Calpidicarpa requires regular watering to maintain its lush foliage and prevent its soil from drying out. However, it's crucial not to overwater the plant, as this can cause root rot.
When watering your Cyrtandra Calpidicarpa, make sure to keep the soil evenly moist but not waterlogged. The frequency of watering will vary depending on the temperature, humidity, and amount of sun exposure.
Fertilization of Cyrtandra Calpidicarpa
Cyrtandra Calpidicarpa benefits from regular fertilization during the growing season to promote healthy growth and vibrant flowers.
You can use a balanced, water-soluble fertilizer every two weeks or a slow-release fertilizer once a month. Be sure to follow the package instructions and avoid over-fertilizing, as this can damage the plant.
Pruning Cyrtandra Calpidicarpa
Pruning your Cyrtandra Calpidicarpa is essential to keep this shrub in shape, promote bushiness, and encourage new growth and abundant blooms.
You can prune your Cyrtandra Calpidicarpa at any time of the year, but it's best to do it after the flowering season has ended. Use sharp, clean pruning shears and remove the damaged, dead, or overcrowded branches and stems.
Also, you can pinch back the tips of the new growth to encourage branching and create a more compact and dense plant.
Propagation of Cyrtandra calpidicarpa (Rock) St. John & Storey
Cyrtandra calpidicarpa (Rock) St. John & Storey, commonly known as the K?ne?ohe Cyrtandra, is an endangered plant species endemic to the Hawaiian Islands. It is a low-growing shrub that prefers moist, shaded environments. It produces small, attractive flowers that are usually purple, pink, or white in color. The propagation of this plant requires careful attention to detail, but it is relatively straightforward and can be accomplished using various methods.
Seed propagation
The most common method of propagating Cyrtandra calpidicarpa is through seed propagation. The seeds should be sown in well-draining soil, and the soil should be kept moist, but not waterlogged. The ideal temperature range for germination is 68 to 77 degrees Fahrenheit. Seedlings usually emerge within two to three weeks and should be grown under light shade until they are mature enough to transplant into larger containers or directly into the soil in their final location.
Cutting propagation
Cyrtandra calpidicarpa can also be propagated through cuttings. Stem cuttings should be taken from healthy, disease-free plants and should be about 4-6 inches long. Remove the leaves from the lower two-thirds of the cutting and dip the cut end in rooting hormone. Place the cutting in a well-draining soil mixture and cover it with a plastic bag to create a mini greenhouse. The cutting should be kept in a bright, but indirect light and should be misted regularly. Roots should appear within four to six weeks, and the new plant can be transplanted into its permanent location once it has developed adequate root and foliage growth.
Division propagation
Cyrtandra calpidicarpa can also be propagated through division. This method involves separating a mature plant into several smaller plants. To do this, carefully remove the plant from its pot or the ground, and gently separate the roots into several smaller sections, ensuring each section has an adequate amount of foliage and root mass. Replant each section into a well-draining soil mixture, and provide the appropriate amount of light and moisture. Division is best done during the plant's active growing season in the spring.
Overall, Cyrtandra calpidicarpa is a relatively easy plant to propagate, and with the right care and attention, you can easily propagate it using any of the methods described above.
Disease and Pest Management for Cyrtandra calpidicarpa (Rock) St. John & Storey
Cyrtandra calpidicarpa is a beautiful and unique plant that requires proper care to prevent the emergence of diseases and pests. Here are some common diseases and pests that might affect the plant and ways to manage them:
Diseases
Leaf spot: Leaf spot is a fungal disease that causes spots on the leaves. The spots might be circular or angular and vary in color depending on the plant variety. To manage this disease, remove the infected leaves and avoid overhead watering. Use a fungicide to prevent the spread of the disease.
Root rot: Root rot is a disease caused by fungi or bacteria that attack the plant's roots, leading to root death. To prevent root rot, ensure the plant is not overwatered, and the soil is well-draining. Also, avoid using contaminated soil and pots.
Mildew: Mildew is a fungal disease that appears as a white powdery coating on the leaves and stems. To manage this disease, remove the infected parts immediately and apply a fungicide.
Pests
Aphids: Aphids are small insects that suck sap from the plant, causing stunted growth and yellowing of leaves. To manage aphids, spray the plant with soapy water or neem oil. Introducing beneficial insects such as ladybugs and lacewings can also help manage the pest.
Spider mites: Spider mites are tiny insects that feed on the plant cells, causing a yellowing of leaves and webbing. To manage spider mites, increase the humidity around the plant by misting it or using a humidifier. You can also use insecticidal soap or neem oil to manage the pest.
Mealybugs: Mealybugs are small insects covered in a white powdery wax that feed on the plant sap. This pest causes yellowing and stunted growth of the plant. To manage mealybugs, use a cotton swab dipped in rubbing alcohol to remove them from the plant. You can also spray the plant with insecticidal soap or neem oil.
Regularly inspect your Cyrtandra calpidicarpa plant for any signs of diseases or pests. Early detection and proper management can prevent the spread of the problem and help keep your plant healthy and beautiful.
