Overview of Crowea exalata (low form)
Crowea exalata (low form) is a low-growing evergreen plant that belongs to the Rutaceae family. The plant is native to Australia and is commonly found in sandy and rocky areas of the southeastern region of the country. It is also known by its common names, such as Dwarf Waxflower, Waxflower, and Crowea.
Appearance
Crowea exalata (low form) grows up to 45 cm in height with a spread of up to 60 cm. The plant has small green leaves that are oval-shaped and are about 1-2 cm long. The leaves are arranged in a whorled pattern around the stem. The plant produces clusters of pink or white flowers that bloom from late winter to spring. The flowers measure about 1-2 cm in diameter and have five petals. The blooms are very fragrant and attract pollinators like bees and butterflies.
Uses
Crowea exalata (low form) is a popular ornamental plant that is used in landscaping as ground cover, in rock gardens, and as a border plant. The plant is also used as a cut flower, and its attractive blooms are perfect for making floral arrangements. Apart from its ornamental value, some parts of the plant are also used for medicinal purposes. The plant contains compounds that have been found to have anti-inflammatory and antibacterial properties and have been traditionally used to treat a range of ailments such as stomach disorders, fever, and headaches.
Growing Conditions
Crowea exalata (low form) thrives in a sunny position and well-draining soil. The plant prefers moist but well-draining soil and should be watered regularly during the growing season. The plant is hardy and can tolerate drought conditions and light frost. Pruning can be done to maintain the shape of the plant and promote blooming. Propagation of Crowea exalata (low form) can be done via seeds or stem cuttings.
In summary, Crowea exalata (low form) is a beautiful and versatile evergreen plant that can add color, fragrance, and texture to gardens and landscapes. Its ornamental value and medicinal properties make it a popular choice among gardeners and horticulturists.Light Requirements
Crowea exalata prefers bright but filtered light. It thrives in areas with morning sun and afternoon shade. Direct sunlight can scorch its leaves, while insufficient light can lead to poor growth and weak stems.
Temperature
Crowea exalata grows well in temperate climates with mild winters and moderate summers. It can tolerate cold temperatures down to -2°C (28°F) but is sensitive to frost.
Soil Requirements
Crowea exalata thrives in well-draining, moist soils rich in organic matter. A pH range of 6.0 to 7.0 is ideal for optimal growth. It is known to be susceptible to root rot, so it’s important to ensure that the soil is not waterlogged.
Cultivation Methods
Crowea exalata (low form) is a hardy evergreen plant that can be grown in pots or directly in the ground. It is native to Australia and thrives in warm, sunny locations. To cultivate Crowea exalata, choose a well-draining location that receives full sunlight.
Prepare the planting site by digging up the soil to about 15-20 cm depth and incorporating organic compost or manure. The ideal soil pH range should be between 4.5 and 7.5. Set the plant in the hole, spreading the roots, and tamp down the soil around it firmly. Water well and apply a 5 cm layer of mulch to retain moisture.
Watering Needs
Crowea exalata requires regular watering and good drainage. After planting, water thoroughly to settle the soil, and then keep the soil moist until the plant shows new growth. During the growing season, water the plant once a week, or as needed, to keep the soil moist but not waterlogged.
In hot, dry weather, increase the frequency of watering, but allow the soil to dry out slightly before watering again. Avoid overhead watering, as wet foliage can promote the spread of fungal diseases. Instead, water at the base of the plant.
Fertilization
To promote healthy growth and flowering, fertilize the Crowea exalata every two weeks during the growing season (spring through summer) with a water-soluble fertilizer. Use a fertilizer with a balance of nitrogen, phosphorus, and potassium, such as a 10-10-10 or 20-20-20 formulation, diluted according to the package instructions.
In addition to the regular fertilization program, amend the soil with organic matter such as compost or manure at least once a year to maintain soil fertility.
Pruning
Crowea exalata requires minimal pruning to maintain its compact growth habit. Prune the plant in late winter to remove any dead, diseased, or damaged branches. Pinch back new growth in the early spring to promote bushier growth and more flowers.
After flowering, prune back the spent blooms and any leggy growth to encourage more compact growth and a more robust bloom for the following year.
Propagation of Crowea Exalata (Low Form)
Crowea exalata (low form), also known as the Mountain Waxflower, is a beautiful shrub that produces delicate pink flowers and glossy leaves. If you want to propagate this plant, you can follow several methods.
Propagation by Seed
One of the easiest and most common ways to propagate Crowea exalata is by seed. Collect the seeds from the plant's pods after they have ripened and turned brown. Sow them in a well-draining potting mix, and cover them lightly with soil. Keep the soil moist and place the container in a warm spot with indirect sunlight. The seeds will germinate in about two to three weeks.
Propagation by Stem Cuttings
You can also propagate Crowea exalata by taking stem cuttings. Choose a healthy, semi-ripe stem from the plant and cut it at a 45-degree angle. Remove the leaves from the lower half of the cutting, leaving only a few at the top. Dip the cut end of the stem in rooting hormone and plant it in a pot filled with a well-draining potting mix. Place the pot in a warm, bright area, and keep the soil moist. The stem should develop roots in about four to six weeks.
Propagation by Division
Crowea exalata can also be propagated by division. Carefully dig up the entire plant and gently separate the root ball into two or more sections. Plant each section in a separate container filled with a well-draining potting mix. Water them thoroughly and place them in a bright location that receives indirect sunlight. Keep the soil evenly moist until the plants are established.
Propagation of Crowea exalata is relatively easy and can be done using different methods. You can experiment with each method to determine which is more successful for you.
Disease and Pest Management for Crowea Exalata (Low Form)
Despite being a hardy plant, Crowea exalata (low form) is vulnerable to certain pests and diseases. Here are some common issues and solutions to help manage them:
Diseases
Root rot: This is a common disease that affects many plants, including Crowea exalata. It is caused by soil-borne pathogens that thrive in wet and poorly-draining soil. In severe cases, it can kill the plant. To manage root rot, ensure that the soil is well-draining and be careful not to overwater the plant. If the plant shows signs of wilting or yellowing leaves, it is likely affected by root rot. Remove any affected parts of the plant and repot in fresh soil.
Leaf spot: This is a fungal disease that usually affects older leaves. It presents as brown spots or blotches on the leaves. To manage leaf spot, avoid overhead watering and ensure that the plant has good air circulation. Remove any affected leaves and dispose of them in the trash bin.
Pests
Spider mites: These tiny pests are barely visible to the naked eye but can cause a lot of damage. They suck the sap from the plant's leaves, causing them to yellow and eventually drop off. To manage spider mites, wipe the leaves with a damp cloth regularly. In severe cases, use an insecticidal soap or neem oil spray.
Scale insects: These bugs are also sap-sucking pests that look like brown or white bumps on the plant. They can cause stunted growth and yellowing of the leaves. To manage scale insects, use a soft-bristled brush to physically remove them from the plant. You can also use insecticidal soap or neem oil spray.
Mealybugs: These soft-bodied insects have a white cottony appearance and also suck sap from the plant. They can cause yellowing and wilting of the leaves. To manage mealybugs, use a cotton swab dipped in rubbing alcohol or neem oil to physically remove them from the plant. You can also use an insecticidal soap or neem oil spray.
By paying attention to these common diseases and pests and taking steps to manage them, you can enjoy a healthy and beautiful Crowea exalata (low form) plant for years to come.
