What are the common varieties of Catharanthus roseus seeds? What are the methods of raising seedlings?

I believe everyone is familiar with Catharanthus roseus. It blossoms continuously all the year round, beautiful and green, elegant and elegant, so it is loved by the majority of flower friends. Catharanthus roseus has not been introduced in China for a long time, mostly cultivated in flower beds in the south of the Yangtze River, indoor potted plants in the north, and Catharanthus roseus varieties and colors are also very diverse, but the maintenance difficulties are about the same. So what are the common varieties of Catharanthus roseus seeds? How to raise seedlings? Let's get to know it.

What are the common varieties of Catharanthus roseus seeds?

There are more than ten common varieties of Catharanthus roseus, mainly according to the color of petals and eyes, such as red-eye series of tiny, apricot, ice powder; white-eye series of blue pearls, balcony purple; yellow-eye series of enthusiasm, parasol; and purple-eye series of Caribbean purple and so on. Different varieties of Catharanthus roseus, their flower color will be quite different, plant size and height are also different, but they all have five petals, grow very neatly, this is also a characteristic of Catharanthus roseus. Of course, no matter which variety it is, it must be selected according to its growth habits and geographical conditions before maintenance.

What are the methods of raising seedlings?

1. Cuttage seedling

Catharanthus roseus generally uses the method of cutting seedlings, usually cut shoots in spring or early summer, 8 cm long, cut off the lower leaves, leaving the top 2-3 pairs of leaves, inserted into the sand bed or rotten leaf soil, keep the soil slightly moist, room temperature 20-24 ℃, rooting 15-20 days after cutting.

2. Cutting time

The cuttings are mostly carried out from April to July, and the young shoots with strong growth and no diseases and insect pests should be selected as cuttings. The cutting medium was a mixture of plain sand, vermiculite and peat, wrapped in a small mass of mud at the base of the cuttings, and cut in a cold bed at room temperature of 20 ~ 24 ℃. It could take root after about 20 days.

3. Sowing and raising seedlings

The seeds of Catharanthus roseus are between 700 and 750 per gram. The sowing time is mainly from January to April. Sowing should use loose artificial media, bed sowing, box sowing seedlings, when conditions can be used to raise seedlings.

4. Seedling management

Stage 1: the radicle is exhibited 4-6 days after sowing. At the initial stage, the seedling medium was kept moist without fertilization, and the temperature was kept at 25-26 ℃.

Stage 2: the water content should be controlled as soon as the radicle is exposed, and watering after the medium is slightly dry can promote germination and control the disease. At this stage, we also need to strengthen the light, so that the sunshine time can reach 12-18 hours a day.

Stage 3: this stage lasts about 14-21 days. It is necessary to maintain a warm and dry environment, the soil pH value is controlled at 5.5-5.8, and the EC value is less than 1. 100-150ppm 20-10-20 and 14-0-14 water soluble fertilizers can be applied alternately every 5-7 days.

Stage 4: when the medium is properly dry and then watered, apply 14-0-14 water-soluble fertilizer of 100-150ppm to strengthen ventilation and prevent overgrowth. This phase lasts about 7 days.

The cultivation and maintenance of Catharanthus roseus is relatively simple, its soil adaptability is wide and its vitality is also tenacious. The propagation of Catharanthus roseus is mostly by sowing and cutting, because the seedling growth of cutting is not as good as that of sowing seedlings, so it is rarely used in large-scale cultivation, and the general family can adopt the way of cutting seedlings.

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