How to raise European roses
European roses are popular among gardeners for their elegant flower shape and long flowering period, but many growers often hinder plant growth due to improper maintenance. Mastering the correct cultivation methods can not only keep European roses in bloom, but also effectively prevent common pest and disease problems. Regulation of the growth environment of European roses, dual regulation of light and temperature, adequate light for 6-8 hours a day is the key to the flowering of European roses. It can be maintained in full sunshine in spring and autumn, and a sunshade net needs to be built at 11-14 o'clock in summer. Maintain overwintering temperatures above 15℃ in winter. It is recommended to cover open field cultivation with double cold-proof films, and potted plants need to be moved into bright places indoors. The water (G-Y) cycle management adopts the watering principle of "see dry, see wet", and the topsoil is poured thoroughly immediately when it is 2 centimeters dry. In summer, replenish water once in the morning and evening, and use spray to maintain 60% air humidity. In winter, switch to single water supply at noon, and use stored water close to room temperature to avoid freezing damage. Scientific fertilization plan for rose cultivation, nutritional management, uses nitrogen, phosphorus and potassium balanced fertilizers (20-20-20) during germination, switches to high-phosphorus formula (10-30-20) after buds appear, and supplements calcium and magnesium foliar fertilizers during flowering. Organic fertilizers and chemical fertilizers are used alternately, bone meal is added in late autumn to enhance cold resistance, and leaves must be washed with clear water after fertilization. The soil substrate improvement uses a substrate with a ratio of humus soil: perlite: vermiculite =5:3:2, and decomposed sheep dung is replenished every quarter. The soil in the root area of the ground-grown plants is improved every spring, and sulfur powder is mixed to adjust the pH value to the range of 6.0-6.5. Environmental preventive measures for comprehensive prevention and control of rose diseases shall be maintained to maintain the plant spacing of more than 80cm to ensure ventilation, and a rainproof canopy shall be built before the rainy season. Trim the cross branches regularly and rotate the direction of the pot every week to allow the plants to receive even light. Remove the diseased leaves immediately and spray garlic extract. The chemical control plan uses baking soda solution (5g/L) to spray powdery mildew in the early stage, and uses Lunasen and Cuibei alternately in severe cases. The focus of black spot prevention and control is to spray mancozeb before the rainy season, cut off the infected branches and irrigate the roots with flusilazole after the disease occurs.
Through systematic environmental control and fine management, European roses can continue to bloom all year round. It is recommended to establish a maintenance log to record growth data and dynamically adjust the maintenance plan based on plant performance so that these European beauties can show their best viewing status.