Origin and Common Names
Crassula natans Thunb. forma amphibia (Harv.) Schönland, commonly known as the Water Pygmyweed, is a species of succulent plant that belongs to the family Crassulaceae. This plant is endemic to South Africa, specifically found in the Western and Eastern Cape Provinces.
General Appearance
The Water Pygmyweed is an aquatic plant that grows in shallow pools, ponds, and streams, where the water is slow-moving. It has small, round, and delicate leaves that form a dense mat on the surface of the water. The leaves are light green in color and are about 2-3 mm in diameter. The stems are thin, branching, and can grow up to 15 cm in length. The roots of this plant are modified as root hairs that float on the surface of the water, helping the plant to absorb nutrients from the water.
Uses
The Water Pygmyweed is commonly used as an ornamental plant in water gardens and in small indoor vertical gardens. It is also an important plant for aquatic ecosystems, as it helps to improve water quality by absorbing excess nutrients from the water. The roots of this plant are also said to have medicinal properties and are used in traditional medicine to treat various ailments, including stomach problems and respiratory infections.
Light Requirements
The Crassula natans Thunb. forma amphibia (Harv.) Schönland plant is best suited for bright light indoor conditions. It can also thrive under partial shade outdoors. Direct sunlight should however be avoided as it may cause leaf scorching.
Temperature Requirements
The Crassula natans Thunb. forma amphibia (Harv.) Schönland plant prefers warmer temperatures and can tolerate temperatures ranging from 60 to 85 degrees Fahrenheit. Temperatures below this range may cause the plant to become dormant or even die.
Soil Requirements
The plant requires a well-draining soil mix. A mixture of cactus soil and perlite or sand can be used to ensure good drainage. The soil should also be able to retain moisture as the plant requires adequate water levels to flourish. A slightly acidic to neutral soil pH of between 6 to 7 is ideal for the plant.
Cultivation Methods
Crassula natans Thunb. forma amphibia (Harv.) Schönland is a water-loving plant that requires a humid environment to grow. It is a floating plant and can be grown in aquariums, ponds or other water bodies. The best method to cultivate this plant is by using cuttings; new plants can be grown from the cuttings taken from the parent plant.
Watering Needs
Crassula natans Thunb. forma amphibia (Harv.) Schönland requires a lot of water. It requires a constant supply of clean, fresh water to thrive, and the water should not be stagnant. Change the water regularly, and keep the water temperature between 65-80°F. To avoid root rot, do not overwater the plant.
Fertilization
Fertilize Crassula natans Thunb. forma amphibia (Harv.) Schönland once a month with a balanced, water-soluble fertilizer. Use the fertilizer as per the manufacturer's guidelines and be careful not to overdose the plant. Overfertilization can harm the plant and cause the leaves to turn yellow.
Pruning
Crassula natans Thunb. forma amphibia (Harv.) Schönland does not require pruning. However, trimming the stems is necessary to control the plant's growth and to remove damaged parts. Use a sharp pair of scissors to cut off the damaged or diseased leaves and stems.
Propagation of Crassula natans Thunb. forma amphibia (Harv.) Schönland
Crassula natans forma amphibia can be propagated through several methods. Here are some of them:
Leaf-cutting propagation
One of the simplest ways to propagate Crassula natans forma amphibia is through leaf-cutting propagation. To do this, you need to select a healthy leaf from the mother plant and remove it from the stem. Allow the cuttings to dry for a day or two until the wounds have calloused over. Place the calloused leaf into soil mixtures that are well-draining. Water it, and over several weeks, the leaf will begin to develop roots.
Stem Cutting propagation
Another propagation method is stem cutting propagation. This method involves taking a piece of stem from the mother plant. Ensure that the stem cutting has at least one node. Cuttings should be about 2-4 inches (5-10 cm) long. Put the cuttings into well-draining soil, and over several weeks, it will begin to grow roots.
Division propagation
Crassula natans forma amphibia can also be propagated through division. Divide the mother plant or remove the offsets that develop around it. Carefully remove them from the mother plant, and plant them promptly into their pots filled with well-draining soil. Water it, and over time, they will grow into new plants. Ensure that the divided plants have an adequate number of roots and above-ground parts to maintain them after being replanted in new soils.
Disease Management
Though Crassula natans Thunb. forma amphibia (Harv.) Schönland is a relatively hardy plant, it can still fall victim to diseases under certain conditions. Some common diseases that affect this plant include:
- Root Rot: This can occur due to overwatering, poor drainage, or using infected soil. To manage this, remove the affected parts and allow the remaining parts to dry out before planting in fresh, sanitized soil.
- Leaf Spot: This can be caused by bacterial or fungal infections and can lead to yellowing or discolored leaves. To manage this, remove affected leaves and avoid overhead watering.
- Fungal Diseases: Fungal infections such as powdery mildew can occur due to high humidity levels or poor air circulation. To manage this, increase ventilation and avoid overcrowding plants. Fungicides may also be used as a last resort.
Pest Management
Crassula natans Thunb. forma amphibia (Harv.) Schönland can also attract pests if not properly cared for. Some common pests that affect this plant include:
- Mealybugs: These are small, white insects that can appear on stems and leaves. To manage, remove visible insects and apply insecticidal soap or alcohol to the affected areas.
- Spider Mites: These are tiny, reddish-brown insects that can cause yellowing and webbing on leaves. To manage, increase humidity levels and use insecticidal soap or neem oil.
- Aphids: These are small, soft-bodied insects that can cluster on stems and leaves. To manage, remove visible insects and use insecticidal soap or neem oil.
Regular monitoring and proper plant care, such as proper watering, fertilization, and pruning, can also help prevent the occurrence of diseases and pests.
