Q: What are the requirements for planting Pingyin Rose?
A: When planting Pingyin Rose, it's essential to start with high-quality seedlings and choose the right variety. For grafted seedlings, a deep soil layer with good irrigation and drainage is ideal. On the other hand, ramets and rose seedlings are better suited for edging, slopes, or thin and dry soils. The planting density varies depending on the purpose. For garden cultivation, the spacing between plants should be 0.8–1.2 meters, with rows spaced 2.5–3 meters apart. In flower intercropping, the spacing is also 0.8–1.2 meters, but row spacing increases to 4–6 meters, depending on the field layout. Grafted roses usually require wider row spacing compared to regular roses. As for planting time, it's best to plant after the leaves have fallen in late autumn and before spring germination, avoiding freezing periods. Late autumn planting is generally recommended. The planting depth should be around 25–30 cm to ensure strong root development.
Q: How to manage the Pingyin Rose after planting?
A: After planting, proper management is crucial for healthy growth. Every 2–3 years, deep tilling combined with organic fertilizer application is recommended. After the leaves fall, dig trenches about 0.5 m deep and 0.4 m wide, and apply approximately 2.5 tons of farmyard manure per mu (667 m²). Each year, apply quick-release fertilizers such as nitrogen, phosphorus, and potassium at a rate of 1 kg per 667 m², along with biological fertilizers to reduce chemical usage gradually. Watering should follow immediately after fertilizing. Watering before flowering and applying fertilizer before leafing can significantly improve flower yield and quality. Additionally, foliar sprays should be applied 20 days before flowering and 5 days after to enhance nutrient absorption.
Q: How does Pingyin Rose pruning work?
A: Pruning is an important part of Pingyin Rose care. As a sun-loving plant, proper pruning ensures good air circulation and light penetration, which boosts yield. It's recommended to prune every 1–2 years after planting. There are three main types of pruning: thinning, heading back, and shaping. Thinning helps remove excess branches that may cause overcrowding, leading to weak growth and poor flowering. Pruning should be done in winter, spring, or after flowering. For renewal pruning, when a plant begins to age, some main branches are cut back each year to encourage new, vigorous growth. This process is typically done every three years, ideally during dormancy. Also, during the growing season, especially in August, you can shorten the shoots to a height that makes harvesting and maintenance easier.
Q: What are the common diseases and pests of Pingyin Rose, and how can they be controlled?
A: Common diseases include rust, black spot, powdery mildew, dieback, and mosaic virus. To prevent these, maintain good soil and water management, and strengthen plant health. In autumn and winter, remove diseased leaves and branches, and burn them to prevent spread. Chemical control is also effective when necessary. As for pests, common ones include beetles, weevils, spider mites, yellow-banded blue-horned beetles, bagworms, and moths. Control methods include trapping, manual removal, and using insecticides. Regular cleaning of old branches in winter can also help reduce pest populations. Integrated pest management is the most effective approach for long-term control.
Author: Pingyin Rose Research Institute, Shandong Province
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