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Mirabilis jalapa, commonly known as the Marvel of Peru or Four O’Clock flower, is a captivating and easy-to-grow ornamental plant. Noted for its vibrant, trumpet-shaped flowers that open in the late afternoon, it brings an enchanting touch to gardens with its colorful blooms and delightful fragrance.
Botanical Information
- Scientific Name: Mirabilis jalapa
- Common Names: Marvel of Peru, Four O’Clock, False Jalap
- Family: Nyctaginaceae
Plant Characteristics
- Growth Habit: Mirabilis jalapa is a perennial in warm climates but often grown as an annual in cooler regions. It typically reaches 2-3 feet (60-90 cm) in height and spreads about the same width.
- Leaves: The leaves are ovate, bright green, and grow up to 4 inches (10 cm) long. They are arranged oppositely along the stems.
- Flowers: The flowers are trumpet-shaped, about 1-2 inches (2.5-5 cm) in diameter, and come in various colors, including pink, red, yellow, white, and multicolored varieties. They open in the late afternoon and remain open until the next morning.
- Blooming Season: Blooms from late spring to fall, with flowers often opening after 4 PM, hence the name Four O’Clock.
Growing Conditions
- Climate: Hardy in USDA zones 7-11. In cooler zones, it is grown as an annual or lifted and stored for winter.
- Sunlight: Prefers full sun to partial shade. More sunlight encourages better blooming.
- Soil: Thrives in well-drained, moderately fertile soils. It can tolerate a range of soil types, including poor soils.
- Water: Requires regular watering, especially during dry spells. The soil should be kept consistently moist but not waterlogged.
Planting and Care
- Seed Starting: Seeds can be sown directly in the garden after the last frost. For earlier blooms, start seeds indoors 6-8 weeks before the last frost date. Seeds have a hard coat and benefit from soaking overnight before planting.
- Transplanting: Transplant seedlings outdoors when they are large enough to handle and after the danger of frost has passed.
- Spacing: Space plants about 12-18 inches (30-45 cm) apart to allow for their spreading habit.
- Pruning: Deadheading is not necessary as the flowers are self-cleaning. However, trimming spent blooms can tidy the appearance.
- Fertilization: Apply a balanced fertilizer or compost at planting time. Mirabilis jalapa does not require heavy feeding.
Benefits and Uses
- Ornamental Value: Marvel of Peru is excellent for flower beds, borders, and containers. Its colorful and fragrant blooms add a dynamic element to evening gardens.
- Fragrance: The flowers emit a sweet fragrance that attracts pollinators like hummingbirds, moths, and butterflies.
- Ease of Growth: It is an easy-to-grow plant that can thrive in various conditions, making it suitable for beginner gardeners.
- Medicinal Uses: Traditionally, parts of the plant have been used in folk medicine for their purported anti-inflammatory and diuretic properties.
Cautions
- Invasiveness: In some regions, Mirabilis jalapa can become invasive. Monitor its spread and remove unwanted seedlings promptly.
- Toxicity: The seeds and roots are toxic if ingested. Keep away from pets and children.
Mirabilis jalapa, or Marvel of Peru, is a delightful and versatile plant that offers vibrant color and fragrance to gardens. Its unique blooming habit and ease of care make it a wonderful choice for both novice and experienced gardeners. Enjoy the charm and beauty of Four O’Clock flowers by incorporating them into your garden landscape this season.
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