How to plant cold-hardy roses? Detailed guide to rose cultivation methods
How to plant cold-hardy roses? Please explain the planting method. Cold-hardy roses can be planted and managed using the following methods: 1. Planting environment for cold-hardy roses. Cold-hardy roses are highly adaptable and prefer a sunny, wind-sheltered, well-ventilated environment. The suitable growing temperature is 8-25°C, the most suitable relative humidity is 75-80%, and in winter they can tolerate low temperatures of -35°C. Cold-hardy roses are suitable for ground planting for landscaping or for container growing, and prefer fertile, loose loam or light clay that drains and aerates well and is rich in humus.
How to plant cold-hardy roses? Please explain the planting methodCold-hardy roses can be planted and managed using the following methods:
1. Planting environment for cold-hardy roses
Cold-hardy roses are highly adaptable and prefer a sunny, wind-sheltered, well-ventilated environment. The suitable growing temperature is 8-25°C, the most suitable relative humidity is 75-80%, and in winter they can tolerate low temperatures of -35°C. Cold-hardy roses are suitable for ground planting for landscaping or for container growing, and prefer fertile, loose loam or light clay that drains and aerates well and is rich in humus.
2. Cultivation techniques
1. Land preparation: For planting in a nursery or landscaped area, first rake the turned soil level and apply plenty of base fertilizer, mainly decomposed farmyard manure, with a small amount of diammonium phosphate added as appropriate. The spacing between plants and rows for ornamental roses is generally 40 cm by 50 cm. To make daily management easier, it is best to plant two rows per bed, with a bed width of 40 cm, planting about 3,400 plants per mu.
2. Pruning and disinfection of seedlings: It is best to plant roses immediately after digging them up. Before planting, give the young plants one round of tidying up, cutting off diseased branches, dead branches, weak branches, damaged roots and overly long roots. Soak the roots of the pruned roses in ABT No. 3 rooting powder for 0.5-2 hours, then spray them 1-2 times with a 600-fold dilution of chlorothalonil or carbendazim wettable powder.
3. Planting: When planting, place the plant into the hole, lift it gently, cover with soil, and water so that the soil is thoroughly soaked, then fill the hole with soil and firm it down.
3. Daily management
1. Irrigation: The soil around the roots of roses should be kept moist. The number of waterings and the timing should be determined according to the specific climate conditions, following the principle of not watering until dry, and watering thoroughly when you do. The best time to water is early morning or in the late afternoon near dusk.
2. Fertilizing: With proper fertilization, roses bloom beautifully and large, and it can also enhance the plant's resistance to pests, diseases and cold. In early spring before the roses bud, it is advisable to apply an inorganic fertilizer once to promote early growth. In cold regions, one and a half months before the autumn frost, spraying a fine mist of monopotassium phosphate at a concentration of 1.5-3 ppm on the leaves can help the rose branches mature and improve cold tolerance. During the growing season, apply a top dressing once a month, applying thin fertilizer frequently and evenly. Apply 0.15-0.1 kg of compound fertilizer per sq m.
3. Pruning: The growing period of roses runs from budding in spring to dormancy in early winter. Before and after each flowering period, proper pruning should be carried out. For newly planted young plants, when the first small flower buds form in early spring, the buds should be removed promptly to encourage the plant to accumulate nutrients and send out branches and grow. After that, remove the spent flowers after each bloom. During growing-season pruning, to prevent the plant from budding and sending out branches in inappropriate positions, buds on other parts of the branches should also be removed promptly. For strong, vigorous roses, in addition to cutting off dead branches, diseased branches and damaged branches during each pruning, some thin, weak, messy, tangled and overly crowded side branches should also be cut away according to the plant's shape, so that the whole plant forms an inverted umbrella shape. Winter pruning is mainly hard pruning, cutting everything back to 3-6 cm from the base, keeping only about 10 buds on the base of the main branches.
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