What plants are in the Oleaceae family?
The Oleaceae family, as a group of plants that combine ornamental and practical uses, includes明星 species such as forsythia and jasmine. This article analyzes their morphological characteristics, growth habits, and application value through four representative varieties, providing systematic knowledge for horticulture enthusiasts.
Analysis of the Four Representative Genera of Oleaceae Plants
Forsythia: Early spring medicinal and ornamental dual-purpose plant
Forsythia, belonging to the Forsythia genus of the Oleaceae family, is a typical plant suitable for the north, with deep brown branches and distinctive four-petaled flowers. Its cold resistance can reach -15℃, flowering from March to April, and it has medicinal value. "Compendium of Materia Medica" records that its fruit can clear heat and detoxify. When cultivating, it is necessary to maintain a soil pH of 6.5-7.5 and it is recommended to apply phosphorus and potassium fertilizers every season to promote flowering.
Jasminum nudiflorum: Early spring signal species in cold regions
Jasminum nudiflorum, from the Jasmine genus of the Oleaceae family, is famous for its bright yellow six-petaled flowers and excellent performance in cold resistance zones 4-8. Its branches have distinct four-angled features, and the annual growth can reach 40cm. In the northwest region, it is necessary to use the earthen heap method for cold protection, and applying decomposed manure during the spring germination period can increase the number of flowers. This species has strong resistance to sulfur dioxide, making it suitable for urban greening applications.
Jasmine: Model of fragrant flower plant cultivation
Jasmine of the Jasmine genus in the Oleaceae family includes three cultivation types: single-petal jasmine (Arab species) with clear fragrance but low yield; double-petal jasmine (mainly cultivated in China) with essential oil content of 0.28%-0.34%; and triple-petal jasmine (ornamental type) with flowering period extended by 30%. Maintaining air humidity at 60%-70% and winter temperatures above 5℃ are key during maintenance, and it is recommended to use a mixture of peat soil and perlite as the substrate for potted plants.
Syringa genus: Optimal species for courtyard landscaping
There are about 27 species of Syringa genus in the world, and the unique purple Syringa in China has a pyramidal inflorescence that can reach 20cm in length. Its ability to tolerate pruning makes it an optimal choice for hedges, and timely short pruning after flowering can maintain the plant shape. The new variety 'Blue Angel' Syringa extends the cold resistance zone to zone 3, with flowers showing a rare blue-purple color. Planting it with金银木 (Halesia diptera) can create a continuous ornamental effect.
Oleaceae plants, with their diverse ecological adaptability, from the medicinal forsythia to the fragrant jasmine, build a unique ornamental system. Mastering their growth patterns and cultivation points can not only create distinctive courtyard landscapes but also develop economic value, making them an ideal group of plants that combine aesthetics and practicality.