Rose cultivation methods and precautions

1. Potting soil

The flower pots you choose don't have to be fancy; an ordinary clay pot that is permeable and breathable will do. Before using a new clay pot, soak it with water and then use it. For newly transplanted roses, choose a small flowerpot of about 15 cm. For 1-2 year old rose seedlings, choose an 18-20 cm flowerpot. Gradually increase the size of the pot according to the size of the plant.

Roses prefer moist soil and are very afraid of drought or waterlogging, so the soil must be loose, well-drained, and have a certain water and fertilizer retention function.

2. Temperature

The most suitable growth temperature for roses is 18~20℃, so in April~May and September~October every year, the flowers are larger and the colors are brighter. As the temperature rises, when it stabilizes at around 30℃, the flowers become small in color, light in flavor, have low ornamental value, and are easily attacked by diseases and insects.

In a high or low temperature environment, roses will enter a dormant state and may experience leaf drop, but there is no need to worry.

3. Lighting

Rose is a sun-loving plant and needs sufficient sunlight to grow. The daily lighting time should not be less than 5 to 6 hours, otherwise the branches and leaves will be weak and leggy branches will appear. Generally, to care for potted roses, place them in a sunny place, provide shade and cool them in summer.

4. Watering

Spring is the season when roses sprout and grow branches, so water supply is very important. In March, new leaves grow out, water once every two days, in the morning; in April, flower buds gradually form, water once a day; in May, the plant enters the flowering period, water twice a day, generally once around 8 am, and add water around 4 pm depending on the dryness and wetness of the soil in the pot.

In other seasons, water according to the principle of "don't water unless the soil is dry, and water thoroughly when you do". When the weather is hot in summer, you can spray water appropriately to cool down.

5. Fertilization

Roses should be fertilized in small amounts and applied frequently.

Before germination in spring, apply fertilizer once, using well-rotted human manure, bean cake, etc. When the buds are about to bloom, apply an additional application of light liquid fertilizer. After the summer flowers wither, apply a well-rotted liquid fertilizer to promote autumn flowering. Apply a small amount of organic fertilizer to the roots in winter to enhance the plant's disease resistance.

6. Notes

1. Antifreeze. Roses are very cold-resistant and can withstand temperatures as low as -10℃. Generally speaking, in the south, roses can be placed directly under the south-facing eaves to spend the winter. In the north, potted roses should be moved to a ventilated place indoors when the temperature drops below 10℃. It should be noted that after the flowers wither in October, do not prune, but apply decomposed phosphorus fertilizer once to promote the branches to be strong and full and enhance the cold resistance. In addition, when the temperature is very low in winter, you can water the plants appropriately when it is slightly warmer to prevent the plants from drying out and freezing to death.

2. Pruning. When the new branches of the rose grow to 15~20 cm, you need to cut off about 3 cm from the top to promote branching. When the side branches grow to a certain extent, you can also pinch them. Repeat this process continuously, and the rose plant will become fuller and have more flowers.

3. Put it in the pot. Potted roses at home all involve the issue of repotting and planting. Repotting is usually done before germination in early spring. Replace the soil with new soil, water it thoroughly, and place it in a cool place. After a week, move it to a sunny place for maintenance.

4. Disease and pest control. If the environment is poorly ventilated and the light is insufficient, roses are easily affected by pests and diseases, such as aphids, powdery mildew, black spot disease, etc. When pests and diseases occur, spray pesticides in time to avoid affecting flowering.