Morphological characteristics of roses: deciduous upright tufted shrubs, gray-brown stems and branches, dense bristles and barbs, pinnate compound leaves, 5-9 leaflets, ovoid to elliptic obovate, obtuse, serrated, thick, wrinkled, bright green at the top, gray-green at the bottom, pilose or spiny, petioles and leaf axes sparsely spiny and glandular hairs. Stipules are mostly connected with petioles and have fine serrations. Flowers are solitary or clustered with 3-6 flowers, with a diameter of 6-8 cm, fragrant, densely hairy and prickly, with purple or white petals, single or double petals. Rose fruit is oblate and red, with persistent sepals.

Growth habits of roses:

1. Rose is a temperate tree species, which is cold-tolerant and drought-tolerant, and does not require strict soil. It can grow in slightly alkaline soil, and it is best to grow and bloom in neutral or slightly acidic light loam with rich humus and good drainage. It likes light best, grows poorly in the shade, has few flowers and is intolerant of stagnant water. When waterlogged, its lower leaves will turn yellow, germinate vigorously and grow rapidly.

2. Roses like sunshine, ventilation and cool climate, and the suitable growth temperature is 15-25 degrees. Roses have strong adaptability, grow well in fertile neutral or slightly acidic light loam, and bloom a lot. Before planting, the decomposed organic fertilizer should be applied in the hole as the base fertilizer, and then applied four times in the following year, that is, 1 time in February and March, and 1 time before flowering; Apply post-flowering fertilizer once after flowering to promote plant growth; Before winter, apply overwintering fertilizer once when the leaves fall, and the amount can be a little more, which is conducive to raising the ground temperature and making plants overwinter safely. Potted roses should be decomposed once every 10 day.

3, roses are not tolerant of waterlogging, if they encounter waterlogging for a long time. Leaves on the lower part of plants will fall off, even leading to plant death. Generally, roses don't need watering at ordinary times, but they can be properly watered in early spring and dry season. Potted roses can be watered once every 2-3 days, and should be watered every day in hot summer.

Extended data:

Rose is native to China and has a long history of cultivation. In plant taxonomy, rose is a shrub of Rosaceae. "Rose" is often cited as another name for a series of cultivated varieties of Rosaceae, and can also be called modern rose or modern rose (the appearance is different from real rose). The fruit of wild rose is edible, sugar-free and rich in vitamin C. It is often used in herbal tea, jam, jelly, juice and bread, as well as Swedish soup and mead.

References:

Baidu encyclopedia-rose