What are the cultivation methods and precautions for the four-season miniature rose?

SummarySoil: A slightly acidic or slightly alkaline soil mixed from sandy soil, vermiculite and coarse sand is preferable. Watering: Water 1-2 times per week, avoiding waterlogging. Fertilizing: During the growing season, spray diammonium phosphate solution on the leaves once a week; apply farmyard manure in spring, apply human and livestock manure or flower fertilizer after budding, apply superphosphate or potassium dihydrogen phosphate aqueous solution at the bud stage, and avoid nitrogen fertilizer during the flowering period. Light: Ensure 6 hours of light per day. Temperature: 15-25°C is optimal, and it must not exceed 30°C.

I. Cultivation methods for the four-season miniature rose

1. Soil selection

The four-season miniature rose has strong adaptability and can be planted in a slightly acidic or slightly alkaline soil mixed from sandy soil, vermiculite and coarse sand, but it is best to choose a sunny, wind-sheltered area with good drainage and fertile, loose soil to benefit crop growth.

For large-scale planting, a seedling bed needs to be built. First make a seedbed 100cm wide and 25cm high, with a 50cm-wide walkway, build an arched shed 50cm high on top and cover it with plastic film, then build a shade shed at a distance of about 80cm above the arched shed, lay a 10cm layer of gravel or coarse sand at the bottom, and spread a layer of sieved fine sandy soil on top. Try to break the soil up finely and level it slightly, keeping the drainage channels unobstructed.

2. Watering method

The four-season miniature rose does not need excessive watering during growth and is relatively drought-tolerant, so normally just water whenever the soil looks dry; usually water 1-2 times per week. In summer, when temperatures are high and water evaporates quickly, watering frequency should be increased. The amount of water each time should be moderate to avoid waterlogging.

3. Fertilization management

During the growing season of the four-season miniature rose, spray diammonium phosphate solution on the leaves, once per week. Apply decomposed farmyard manure before spring sprouting, apply human and livestock manure or flower fertilizer after budding, apply superphosphate or potassium dihydrogen phosphate aqueous solution at the bud stage, and avoid nitrogen fertilizer during the flowering period to prevent flower drop. In winter, when temperatures are low, the fertilizer can be buried in pits around the roots of the plants and then watered in.

4. Sufficient light

The four-season miniature rose is a sun-loving plant, and sufficient light promotes its growth; insufficient light leads to poor nutrition and stunted plants. Light duration must be at least 6 hours per day, so that the flowers produced will be bright and abundant.

5. Optimal temperature

Temperature is very important for the growth of the four-season miniature rose and the requirements are strict. When the temperature is above 30°C, the plants will wither; when it is below 8°C, freezing damage occurs. The most suitable survival temperature for the four-season miniature rose is 15-25°C. With good temperature control, the quality of the plants will also be high.

II. Precautions for the four-season miniature rose

1. Division

The rhizomes of the four-season miniature rose are tenacious and produce many vigorous divisions. Division can concentrate nutrients and thus promote growth and development. Division usually occurs before spring sprouting or after leaf fall in autumn, and this is also one of the propagation methods for the plant.

2. Pruning

The timing of pruning should be chosen during the winter leaf-drop dormant period. Cut off two-thirds of the old, weak, dead and diseased branches, and the remaining ones will promote new growth from the base. Because flower buds grow at the tips, prune by thinning rather than by heading back.

3. Watering

The four-season miniature rose is a shallow-rooted tree species. In summer, watering once every 5 days is enough. Water moderately at ordinary times, water before and after the flowering period, and prevent waterlogging during the rainy season.

4. Removal

After the four-season miniature rose has flowered, the spent flowers and failed fruits should be removed and cleaned up. Only in this way can it be ensured that the plant's nutrients are not absorbed in excess, which can effectively promote branch growth and prolong the flowering period. The flowering effect is far better than that of plants without removal management.