The latest course of planting techniques and methods of Willow Verbena

Verbena vulgaris is also called South American verbena, long-stemmed verbena, etc. Verbena is a perennial herb, native to South America, Brazil, Argentina and other places. In the field, it will cross with some plants of the same genus with spikelike flowers, so there are often some intermediate plants with inflorescences between Cymes and spikes, so let's take a look at the planting techniques of Verbena.

Planting environment of Verbena willow

Verbena likes warm climate, the suitable temperature for growth is 20: 30 ℃, it is not cold-tolerant, the growth is slow below 10 ℃, it is better to grow in full sunshine, if it is cultivated in the environment of insufficient sunshine, it will grow badly, it can blossom all the year round, the flowering period is long, the ornamental value is high, it is better in spring, summer and autumn, but worse or no flowering in winter, it is not harsh to the soil selection, good drainage, strong drought tolerance. The water demand is moderate.

Propagation method of Verbena officinalis

Sowing, cutting and root cutting are available for propagation of Verbena officinalis. The longest viewing time is sowing and flowering in spring, with about 4000 seeds per gram, the germination rate is about 85%, the optimum temperature for germination is 20 ℃ ~ 25 ℃, and it germinates 10 ~ 15 days after sowing. The whole seedling raising period is 40 ~ 45 days. Sowing in January is better. It takes 3 to 4 months from sowing to flowering (low temperature from January to March). It takes 4 ~ 5 months from sowing to flowering. Seedlings are usually raised with 200-hole hole trays to facilitate transplanting and planting, and the medium can use peat soil imported from Denmark to ensure that the seedlings are strong, neat and fast. It can only be transplanted when the true leaves reach 2 ~ 3 pairs and the roots form clusters 45 days after sowing. Hole plate seedlings are not recommended to go directly to the ground, because the initial growth rate is slow and the mortality rate is relatively high. Generally, the nutrition bowl which is moved to 9cm and 12cm first grows for 2 months and then has the best effect.

Planting technique of Verbena officinalis

When planting, the row spacing of large and small ridges is 60 cm, the spacing of small ridges is 40 cm, and 6 plants are planted per square meter. to ensure good soil conditions before planting, it is generally necessary to make equal preparations for watering, weeding, fertilization, ploughing and raking. After planting, water is poured through to ensure that the soil layer of 20 cm below the soil surface remains moist, without pruning, and has strong natural branching ability. The flowering period begins one and a half to two and a half months after planting, and the full flowering period can last for two and a half to three months. Verbena willow is very resistant to drought and should not be too wet during maintenance. It can survive the winter safely in the area with the lowest temperature above 0 ℃. It is generally used for annual cultivation in the north of the Yangtze River.

Planting value of Verbena willow

1. Because of its tall plants, there are many problems in the management of potted plants, such as tall stems blown by the wind or man-made collisions, difficult transportation after flowering, and so on. In the past, few farmers were willing to grow into commodities for sale, because sightseeing farms are prevalent. The more exuberant the number, the more beautiful the verbena can emerge.

2. Verbena willow is widely used in landscape layout. Because of its spectacular planting effect, it is often used in the landscape layout of sparse forests, botanical gardens and villas. The flowering season is like a pink-purple cloud. In the courtyard greening, Verbena can be planted along the road, separating the courtyard space, but also enriching the roadside scenery. The lower layer of Verbena can be equipped with beautiful evening primrose, purple flowers, sedum, and so on. The effect will be better.