What are lilacs and lilac knots?

Lilac refers to ornamental lilacs, belonging to deciduous shrubs or small trees. The flower tube is slender, the whole plant is fragrant, the color is elegant, the flowers are rich, the growth adaptability is strong, and it is easy to cultivate. It is widely planted in gardens for decorative purposes.

Panicle erect, lateral buds germinate, nearly spherical or oblong, 4- 16 cm long and 3-7 cm wide; Pedicel 0.5-3 mm long; Calyx is about 3 mm long, and calyx teeth are acuminate, acute or obtuse;

Corolla purple, length 1. 1-2 cm, corolla tube cylindrical, length 0.8- 1.7 cm, lobes spreading at right angles, oval, ovoid to obovate, length 3-6 mm, width 3-5 mm, apex slightly baggy or absent; Anthers yellow, located 0-4 mm from throat of corolla tube.

Lilac knot refers to the bud of lilac, which is a common image in China's literary works and is often used to express a melancholy complex.

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Growth habit

Lilacs are mainly distributed in subtropical subalpine, hillside forest edge from warm temperate zone to temperate zone, undergrowth and sunny shrub in cold temperate zone. Its nature likes sunshine, warmth and humidity, but it avoids waterlogging and is slightly tolerant to shade, drought, cold and pressure. The soil conditions should be loose and barren, and all kinds of soil can grow normally except strongly acidic soil.

It is most suitable for planting in gardens with annual average temperature of 23 ~ 24℃, monthly average maximum temperature of 26 ~ 27℃, monthly average minimum temperature of 16 ~ 19℃, loose and fertile soil and good drainage conditions. Avoid planting in low-lying areas, otherwise it will cause high incidence of diseases and even lead to the death of the whole plant.

If planted in the shade or semi-shade, it will cause slow growth, weakness and scarce flowers. Mature trees like light, and insufficient light affects flowering at this time. 1 ~ 3-year-old young trees prefer shade to strong sunlight, otherwise it is not conducive to the growth of young trees.