Origin
Impatiens rubromaculata Warb. subsp. imagiensis Grey-Wilson, commonly known as the Spotted Impatiens, is a species of flowering plant in the Balsaminaceae family that is native to East Africa, specifically Tanzania.
Common Names
The plant is commonly known as the Spotted Impatiens, as well as the Tanzania Impatiens.
Uses
The Spotted Impatiens is mostly grown as an ornamental plant, due to its attractive flowers and leaves. The flowers are typically pink, with dark spots, and bloom in the summer months. The plant prefers a shady location and well-drained soil.
General Appearance
The Spotted Impatiens is a perennial plant that grows up to 50 cm in height. It has dark green leaves that are lance-shaped and have serrated edges. The flowers are borne in clusters and are approximately 3 cm in diameter. The plant is often used as a bedding plant, as well as in containers for patios and porches.
Light Requirements
Impatiens rubromaculata Warb. subsp. imagiensis Grey-Wilson prefers partial to full shade for optimal growth conditions. Direct sunlight can cause the plant to wilt and lose its vibrant color.
Temperature Requirements
The ideal temperature range for this species is between 60 to 75 degrees Fahrenheit (15 to 24 degrees Celsius). Extreme heat or cold can cause stress to the plant and hinder its growth.
Soil Requirements
Impatiens rubromaculata Warb. subsp. imagiensis Grey-Wilson prefers well-draining, moist soil that is rich in organic matter. A pH range between 5.5 to 6.5 is ideal. Sandy loam or loamy soil can provide adequate drainage while retaining enough moisture for the plant.
It is recommended to add compost or other organic matter to the soil before planting to provide additional nutrients. The soil should be kept consistently moist but not waterlogged to prevent root rot.
Cultivation Methods
The Impatiens rubromaculata Warb. subsp. imagiensis Grey-Wilson is typically grown as an ornamental plant, especially in gardens. To cultivate this plant, you need well-draining soil with a good amount of humus and organic matter. The plant grows well in partial shade to full sun. The recommended temperature range is between 18°C and 25°C.
Watering Needs
Watering this plant is essential, but avoid overwatering. Make sure that the soil is moist, but not waterlogged, as excessive moisture can damage the roots. Water the plant when the top layer of soil becomes dry. During the hot summer months, the plant may require more frequent watering. Ensure that the water drains well and that there is no waterlogging.
Fertilization
Impatiens rubromaculata Warb. subsp. imagiensis Grey-Wilson requires regular fertilization to encourage healthy growth and flowering. Use a balanced fertilizer with a composition of 10-10-10 or 20-20-20. Apply the fertilizer once a month during the growing season. Avoid over-fertilization, which can cause salt burn or foliage burn in plants.
Pruning
The plant benefits from periodic pruning, which removes dead, diseased, or damaged growth and encourages new growth. Prune the plant regularly to keep it from becoming too straggly or leggy. Pruning should be done in the spring before new growth appears or in the fall after the plant has stopped blooming. Use clean, sharp pruning shears to make the cuts and make sure that you cut just above a leaf node.
Propagation of Impatiens rubromaculata Warb. subsp. imagiensis Grey-Wilson
Impatiens rubromaculata Warb. subsp. imagiensis Grey-Wilson is commonly known as red-spotted impatiens. It is a beautiful plant that is indigenous to East Africa. Propagation of this plant can be done using three common methods which include:
Seed propagation
The best time to collect seeds for propagation is when the seed capsules are mature and begin to open. These seeds are then sown in fine soil that is kept moist at all times. Under optimal conditions, germination takes place in approximately two weeks, and the seedlings can be transplanted after four weeks.
Stem cuttings propagation
Propagation of impatiens rubromaculata can also be done using stem cuttings. It is best to take cuttings when the plant has produced sufficient new growth. Take a cutting that is 10 cm long and remove the lower leaves. The cutting should then be dipped in rooting hormone and placed in a tray filled with compost. The tray is kept moist while the cutting is left to root. The cutting should produce roots in 4 to 6 weeks and can then be transplanted to individual containers.
Division propagation
Division propagation is another method that can be used to propagate impatiens rubromaculata. This method is best used when the plant has produced several shoots. To propagate the plant using this method, carefully dig the plant out of the ground and separate the individual shoots. Each shoot should then be planted in a separate container.
Whichever propagation method is used, it is important to ensure that the conditions are optimal for the plant to grow and thrive.
Disease Management
Impatiens rubromaculata Warb. subsp. imagiensis Grey-Wilson is susceptible to several diseases that could cause significant damage to the plant. Here are some of the common diseases that might affect this plant:
- Downy Mildew: This fungal disease causes yellowing of leaves, stunted growth, and death of the plant. It spreads through spores released in moist conditions. To manage downy mildew, it is advisable to remove the affected parts of the plant, apply fungicides and maintain proper ventilation to ensure the plant stays dry.
- Fusarium Wilt: This fungal disease causes the plant to wilt, turn yellow, and eventually die. It is spread through contaminated soil or watering equipment. To manage Fusarium wilt, ensure the soil is dry before watering and avoid over watering. Inspect the plants regularly to identify infected plants and remove them immediately to prevent the spread of disease.
- Rhizoctonia Blight: This fungal disease causes the plant to wilt, have brown spots on the leaves and the stem. It is caused by high humidity and poor air circulation. To control Rhizoctonia Blight, remove the affected areas of the plant and apply a fungicide. Ensure proper air circulation, avoid high humidity and over-watering.
Pest Management
Impatiens rubromaculata Warb. subsp. imagiensis Grey-Wilson is also prone to pest infestations that can cause severe damage to the plant. Here are some of the common pests that might affect this plant:
- Aphids: These tiny, soft-bodied insects, often in colonies, appear on the new growth, suck plant sap, causing leaves to curl, turn yellow, and eventually fall off. To manage aphids, use an insecticidal soap, or spray with water to dislodge them.
- Spider Mites: These pests create tiny webs between the leaves and cause leaf discoloration. They thrive in high temperatures and dry conditions. To manage spider mites, keep the plant well-hydrated, humid, and cool. Use insecticidal soap or neem oil to control spider mites.
- Thrips: These tiny insects damage plants by sucking sap, causing leaves to have a stippled appearance, and distorted shapes. In large numbers, thrips can cause stunted growth and reduced blooms. Use a systemic insecticide, neem oil, or insecticidal soap to control thrips.
