Origin
Cleome kersiana Thulin is a species of flowering plant in the family Cleomaceae, that is native to Ethiopia, Eritrea, and Somalia. It was first discovered and described by botanist Mats Thulin in 1984.
Common Names
The plant is commonly known as the Kersa spider flower or the Kersana Cleome.
Uses
The Kersa spider flower has traditionally been used by people in Ethiopia and Eritrea for medicinal purposes. It has been used as a remedy for skin diseases, coughs, and fevers. The plant also has potential as an ornamental, with its vibrant pink and white flowers adding a pop of color to any garden or landscape. In addition, Cleome kersiana Thulin is a good source of nectar and pollen for bees and other pollinators.
General Appearance
Cleome kersiana Thulin is an annual plant that grows up to one meter in height. It has palmate leaves, typically with five or seven leaflets arranged in a fan-like manner. The flowers are borne in long racemes, with each flower consisting of four pink or white petals and six long, protruding stamens. The seeds are contained in long, narrow pods that split open when mature, releasing small black seeds. Overall, the Kersa spider flower is a striking plant with an elegant, airy appearance.
Light Requirements
Cleome kersiana Thulin requires a lot of sunlight to grow and flourish. The plant prefers at least six hours of direct sunlight per day. It also thrives in partial shade, so it's best to grow it in an area with some shade during the hottest part of the day. Lack of sunlight can lead to leggy growth or stunted growth.
Temperature Requirements
Cleome kersiana Thulin grows best in warm temperatures ranging from 60°F-80°F (15.5°C-27°C). The plant cannot tolerate frost, and temperatures below 55°F (12.7°C) can damage the plant. It's essential to keep the plant away from cold drafts or extreme temperature changes.
Soil Requirements
Cleome kersiana Thulin thrives in well-draining soil with a neutral pH level. The soil should be rich in organic matter and should retain moisture without being too wet. The plant can tolerate poor soil conditions but will grow best in nutrient-rich soil. Adding compost or organic fertilizer can help improve soil quality and encourage healthy growth.
Cultivation Methods for Cleome kersiana Thulin
Cleome kersiana Thulin is an easy-to-grow plant that thrives best in warm climates. It can be planted from seeds or propagated via cuttings.
When planting from seeds, it's best to sow them in well-draining soil, enriched with compost. The plant requires good sunlight, so it's best to plant it in a spot where it can get at least 6-8 hours of direct sunlight daily.
Ensure that the soil is moist but not waterlogged after planting, and when the first set of true leaves appear, thin the seedlings to prevent overcrowding.
Watering Needs of Cleome kersiana Thulin
The plant requires moderate watering. Ensure that the soil is moist but not waterlogged, and avoid letting the soil dry out completely. During hot weather, it's advisable to water the plant early in the morning or late in the evening.
Overwatering may lead to fungal infections or root rot. So, ensure that the soil has good drainage to prevent waterlogging.
Fertilization of Cleome kersiana Thulin
The plant requires nutrients to thrive, and it's advisable to fertilize it regularly. You can use natural organic fertilizers, compost, or slow-release fertilizers.
Apply the fertilizers once a month to promote healthy growth and flowering. Ensure that you follow the recommended application rates to avoid fertilizer burn. Avoid fertilizing the plant during winter or when it's dormant.
Pruning of Cleome kersiana Thulin
The plant requires minimal pruning, and it's best to do it during the growing season. You can pinch off the dead flowers to promote continuous blooming and remove any diseased or damaged branches.
Trimming the plant also helps to maintain its shape and size. However, avoid pruning it too much as it may inhibit its flowering.
Propagation of Cleome kersiana Thulin
Cleome kersiana Thulin is an annual plant native to East Africa. Propagation of this plant can be done through different methods such as seed sowing, stem cuttings, and division.
Seed Propagation
Seed propagation is the most common and easiest way to grow Cleome kersiana Thulin. The seeds can be sown directly into the ground in early spring after the last frost. Before sowing, the soil must be loosened and cleared of any weeds. The seeds should be planted about 1 inch deep into the soil and watered well. Germination occurs within 7-14 days.
Another way to propagate Cleome kersiana Thulin with seeds is by starting them indoors. This is done about 6-8 weeks before the last expected frost. The seeds are sown in small pots or seed trays filled with potting soil. They need to be kept moist and in a warm area with a temperature of about 70°F. Once the seedlings have sprouted and grown about 3-4 inches tall, they can be transplanted outside.
Stem cutting propagation
Cleome kersiana Thulin can also be propagated through stem cuttings. Take a cutting from a healthy plant and remove the lower leaves. Dip the cut end of the stem into rooting hormone, and plant it into a soilless potting mix. Keep the soil moist and in a warm, shaded area until roots have formed, usually within 2-3 weeks. Once rooted, the new plant can be transplanted to a permanent location in the garden.
Division
Division is another propagation method for Cleome kersiana Thulin. This method is done by dividing the roots of an established plant. Carefully dig up the plant, and gently separate the roots into sections, making sure each section has a good size of roots and some foliage. The divided plants can be replanted immediately to the desired location in the garden, watered, and kept moist until new foliage appears.
Disease and Pest Management for Cleome kersiana Thulin
Cleome kersiana Thulin is a beautiful plant with showy pink flowers but like any other plant, it can fall victim to various diseases and pests. Here are some of the common ones you might encounter and ways to manage them:
Diseases
Powdery Mildew: This is a fungal disease that appears as a white powdery substance on the leaves, stems, and flowers of the plant. It can slow the growth of the plant and cause the leaves to turn yellow and fall off. To manage this disease, make sure to water the plant at the base and not on the leaves. Also, remove any infected leaves or stems and dispose of them properly to prevent spreading the disease.
Leaf Spots: Leaf spots are caused by various fungi and bacteria that create circular spots on the leaves of the plant. The spots can be brown, black, or gray. To manage this disease, remove any infected leaves and make sure the plant has good air circulation and receives enough sunlight.
Pests
Aphids: Aphids are tiny green insects that suck the sap from the plant, causing deformities and stunted growth. To manage an aphid infestation, spray the plant with a strong jet of water or apply insecticidal soap or neem oil to the leaves. You can also introduce predators such as ladybugs or lacewings to the garden to naturally control aphids.
Spider Mites: Spider mites are tiny pests that suck the sap from the plant, causing the leaves to turn yellow and fall off. They are difficult to see with the naked eye but leave webbing on the plant. To manage spider mites, spray the plant with a strong jet of water or apply insecticidal soap or neem oil to the leaves. You can also introduce predators such as predatory mites or lacewings to the garden to control spider mites.
By keeping a close eye on your Cleome kersiana Thulin and taking steps to manage diseases and pests, you can ensure it thrives in your garden.
