How to Select Yellow Rose (Rosa xanthina) Seeds? A Detailed Guide to Propagation Methods

Yellow rose (Rosa xanthina), also called Cimei flower, is the most common plant of the Rosaceae family in the Rosa genus. It is a deciduous clumping shrub with yellow flowers and thorns on its branches just like the rose, which is why it is called yellow rose. Yellow rose prefers a warm environment, and when it blooms, the whole plant turns golden yellow. It is an important ornamental flowering tree in northern China from late spring to early summer. So how do you select yellow rose seeds? What propagation methods are there? Let's take a look together with the editor below.

1. How to select yellow rose seeds?

Not all yellow rose seeds can germinate; only single-petaled ones can be grown from seed. Because yellow rose seeds have a very thick seed coat, they do not germinate easily, and the thick seed coat blocks water from entering, so the seeds must be treated before sowing.

The seed treatment is usually done around May or June, so they can be sown the following year. Prepare a basin of warm water at around 65 degrees, soak the seeds for one hour, then remove them and sterilize with potassium permanganate for two hours. After removing them, rinse clean with water.

2. What propagation methods does yellow rose have?

1. Seed propagation

Propagation time: the following spring

Propagation method: after collecting the seeds, pile them up to let them rot and soften or crush them. After washing and drying in the shade, either store them mixed with moist sand until sowing the following spring. Before sowing, first soak the seeds in water for two days, then mix with sand and stratify to promote germination. Begin sowing when about one third of the seeds have split open. Sow in drills, with a sowing rate of 2-3 kg per 667 sq m, at a depth of about 1 cm, then cover with soil and keep moist. After about 20 days, the seedlings will emerge.

2. Cutting propagation

Propagation time: rainy season

Propagation method: cut semi-lignified branches of the current year, keep 2-3 leaves at the top of each cutting, with a length of about 10-15 cm, insert into sandy soil at a plant-to-row spacing of 5 cm x 5 cm and a depth of about 1-2 cm. Water thoroughly the first time, cover with plastic film, maintain a temperature of 20-30°C and a relative humidity of 80%-90%, and spray water on the leaves every day, controlling the moisture of the cutting bed medium. The survival rate is above 80%. During this period, pay attention to the water amount to avoid drowning the trees.

3. Layering propagation

Propagation time: carried out in July

Propagation method: simply press the tender shoots into the soil, and they will take root by the following year. In autumn, separate them from the mother plant, lift out the heeled-in plants, and then transplant them into the soil the next spring. With a little management, they can be successfully planted.

4. Division propagation

Propagation time: generally carried out in late March, that is, after leaf fall and before spring buds sprout.

Propagation method: dig up the sprouted seedlings around the mother plant and plant them with roots and soil into holes, cover with soil and press firm, and water. Or dig out the entire clump with soil, split it into several parts, each retaining 2-3 branches and some roots, and plant them separately. The plant spacing is 30-40 cm, and the row spacing is 50-60 cm. To improve the survival rate, some branches can be thinned out to reduce water transpiration. Also, during this period there are few pests and diseases, so with just a little management, propagation can succeed.

The above is an introduction to yellow rose. After blooming, yellow rose is bright and eye-catching, and its flowering period is relatively long, making it very suitable for garden viewing, mass planting, and flower hedges. It now mainly grows on sunny slopes or in shrub thickets, and has already been widely cultivated in various places.

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