Is sisal a shrub? Why?

Botanically speaking, sisal is not a real woody plant (lacking lignified stems), so it cannot be regarded as a shrub group. But in the study of ecology or vegetation, it can also be regarded as a "shrub" in a broad sense because of its height.

1, form

Sisal, with a total height of 0.4~2m and whiskers, has different leaf shapes, some slender and some round. The bud color of sisal increases, such as light red, red, yellow-green, white and so on. And the flowering period is very long and the amount of flowers is very large. The flowering period is from late June to late August every year, and the flowers mature from September to1October. Widely distributed in East Asia and Europe, Shuyang, Northeast, Langfang and Henan are the main producing areas of sisal.

2. Growth conditions

Sisal enjoys an environment with sufficient sunshine time, and is slightly tolerant to shade, cold and drought, with a warm and rainy climate and deep and fertile growth. Good tillering ability and germination ability, not afraid of pruning. It grows in river banks, rural areas, under trees and canyons, with an altitude of 295 1800 meters.

Sisal is fertilized twice a year, once in winter, and organic fertilizer is applied in winter or early spring; The other time is the growth period after the flowers wither, and chemical fertilizers are applied, mainly chemical fertilizers. If you want to have a beautiful variety, you should prune it often. The focus of pruning is neatness and beauty, cutting off dead branches and pruning in sunny days. Sunlight will accelerate wound healing, pruning on cloudy days is not conducive to seedling growth, and it will also lead to the invasion of bacteria and cause rot. Spraying foliar fertilizer during flowering and leafing can change the vegetative growth of species into growth nutrition, inhibit the crazy growth of tree tops, promote flowering and leafing, and bloom more. You don't have to prepare for sisal overwintering. In the climate of MINUS 35 degrees Celsius, you can overwinter naturally.

3. Greening purpose

Sisal is widely used in community greening, because the flowering period is summer, which belongs to the climate of lack of flowers. Pink buds are beautiful, which bring some coolness to the hot summer and are also a good variety for private gardens. Sisal can be used for planting color blocks, patterns, street greening, park greening, family greening and so on. The planting effect is quick, the seedling stage is short and the landscape effect is good. In addition, it can also be planted in combination with a variety of seedlings to create a variety of landscapes, such as Castanopsis fissa, Begonia, Ilex cornuta, Hydrangea macrophylla, Lagerstroemia speciosa, cold-season type, evergreen day lily, red rosewood, Danish grass, Canna mosaic, cold-resistant bamboo, Sabina vulgaris, black pine seedlings, American broom, golden cypress and so on.