Origin
Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr. is a plant species that is native to the southwestern United States and northern Mexico.
Common Names
The plant is commonly known as Arizona blue eyes or desert blue eyes.
Uses
Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr. is mainly used for ornamental purposes due to its attractive and colorful flowers. The plant is known for its blue funnel-shaped flowers that have yellow centers. It is a common choice for adding color to garden beds, borders, and container gardens. The plant can also be grown as a ground cover due to its trailing habit.
General Appearance
Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr. is a low-growing perennial plant that grows up to 1 foot tall and spreads up to 2 feet wide. It has small, gray-green leaves that are notched at the tips. The flowers are mainly blue, but can also be white, and bloom from summer to fall. The plant prefers well-drained soils and full sun exposure.
Growth Conditions for Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr.
Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr. is a flowering plant that belongs to the family Convolvulaceae. This plant species is native to the southwestern part of the United States and northern Mexico. It is commonly known as Arizona blue eyes or southwestern dwarf morning-glory due to its bright and attractive blue flowers that resemble an eye.
Light requirements
E. arizonicus prefers full sun exposure for optimal growth and flowering, although it can tolerate some light afternoon shade. Inadequate exposure to sunlight can lead to poor growth and fewer flowers. Therefore, it is crucial to plant the species in a location that receives full sunlight.
Temperature requirements
E. arizonicus can withstand a wide range of temperatures, making it adaptable to different climates. However, it prefers warm temperatures between 70-80°F (21-27°C) for optimal growth. Lower temperatures can slow down the growth rate and delay flowering, causing the plant to produce fewer flowers than usual. Thus, it is advisable to plant the species in warmer regions to achieve maximum growth and flowering.
Soil requirements
E. arizonicus prefers well-draining and slightly acidic soil that is rich in organic matter. A soil pH between 5.5-6.5 is ideal for the plant's growth. It can also tolerate poor soil conditions, but it is advisable to incorporate organic matter like compost into the soil to enhance soil structure and fertility. Soil that holds too much water can lead to root rot and plant death; hence, it is essential to ensure that the soil is well-draining to prevent such occurrences.
Cultivation
Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr. is a plant that thrives in full sun, making it an excellent choice for gardeners who have sunny yards or patios. This plant is also quite low-maintenance, so it's an ideal choice for gardeners who are looking for a fuss-free addition to their outdoor space.
When planting Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr., ensure you place it in a well-draining soil mix and plant it at a depth that covers the root ball. This plant can tolerate dry soil conditions, so if you're growing it in pots, you can use a cactus or succulent soil mix to ensure proper drainage.
Watering Needs
Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr. is drought-tolerant, so be careful not to overwater it. It's better to underwater than overwater, as this plant is susceptible to root rot. Allow the soil to dry out between waterings, and avoid watering the leaves as much as possible to prevent leaf spot and other fungal diseases.
Fertilization
Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr. doesn't require much fertilization, but you can use a balanced fertilizer every two weeks during the growing season to encourage blooming. Follow the instructions on the fertilizer carefully, as over-fertilization can cause salt buildup in the soil.
Pruning
Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr. doesn't require frequent pruning, but you can deadhead spent blooms to encourage new growth and flowers. If your plant becomes too large or unruly, trim it back by one-third in early spring to encourage bushier growth and a more compact shape. This plant also responds well to shearing, so feel free to use hedge clippers to shape it as desired.
Propagation of Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr.
Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr. can be propagated by three main methods, namely seed propagation, stem cutting propagation, and division propagation. Each of these methods has its pros and cons, and the choice of method depends on the circumstances.
Seed Propagation
Seed propagation is the most common method of propagating Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr. Seeds are harvested from mature plants and sown in seed trays or directly in the garden. The ideal time to sow seeds is in spring or summer, and it takes approximately two to three weeks for the seeds to germinate.
When sowing seeds in seed trays, it is essential to see to it that the soil is kept moist. Once seedlings emerge, they should be transplanted into small pots, and once they attain a height of about 10 cm, they can be transplanted into the garden. Plants grown from seeds may take up to three years to achieve full maturity.
Stem Cutting Propagation
Stem cutting propagation involves taking cuttings from young stems of mature plants. Cuttings taken during the growing season root quickly, and the ideal propagation time is usually spring or summer. The cuttings should be approximately 10 cm long and planted in trays containing cuttings compost. Foliage on the lower part of the stem should be trimmed to avoid water loss.
The trays should be placed under a misting system or kept inside a transparent plastic bag to keep moisture levels high. After the cuttings form roots, they can be planted in individual pots and grown until they are large enough to be transplanted into the garden.
Division Propagation
Division propagation involves dividing the root ball of mature plants into smaller portions, each with foliage and root systems, which can be planted individually. This method of propagation is best done in spring or fall when the plant is not actively growing. It is essential to ensure that each division has a part of the root system and foliage to ensure that the new plant can survive and thrive.
The divided plants should be replanted in the garden and watered regularly. Once new growth is visible, it is essential to fertilize the plants using either organic compost or commercial fertilizers. Division propagation usually results in plants that attain maturity faster compared to other methods of propagation.
Disease Management
Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr. is susceptible to certain diseases that can impact its growth and development. Some of the common diseases that affect this plant include:
- Leaf spot: This disease is caused by a fungal infection and can cause yellowing and discoloration of leaves. To manage leaf spot, remove infected leaves and stems and dispose of them properly. Avoid overhead watering and ensure proper air circulation around the plant.
- Root rot: Root rot is a common problem in plants grown in poorly drained soil. It is typically caused by waterlogging and fungal infection. To manage root rot, ensure that the soil is well-draining and avoid overwatering. Additionally, try to keep the foliage dry during watering and fertilize only as needed to prevent excess moisture in the soil.
- Powdery mildew: Powdery mildew is a fungal disease that appears as a white, powdery growth on leaves and stems. It can be managed by removing infected plant parts and using a fungicide as directed on the label. Additionally, ensure proper air circulation around the plant and avoid overhead watering to prevent the disease from spreading.
Pest Management
Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr. is also vulnerable to attack by pests that can cause damage to the plant. Some of the common pests that might affect this plant include:
- Aphids: Aphids are small, soft-bodied insects that feed on the sap of the plant. They can be managed by spraying the plant with a strong jet of water or by using an insecticidal soap as directed on the label.
- Spider mites: Spider mites are tiny arachnids that feed on the undersides of leaves, causing them to turn yellow and eventually die. They can be managed by regular monitoring and spraying the plant with a strong jet of water or by using a miticide as directed on the label.
- Caterpillars: Caterpillars can cause damage to the leaves of Evolvulus arizonicus Gray var. laetus (Gray) van Ooststr. by feeding on them. They can be handpicked off the plant or managed by using a biological insecticide as directed on the label.
Regular monitoring and maintaining good plant hygiene can go a long way in preventing both diseases and pests from affecting the plant. Additionally, following proper cultural practices and ensuring optimal growing conditions can help the plant to thrive and resist disease and pest pressure.
