How to Grow Dahlia pinnata? Detailed Guide to Cultivation Methods and Precautions

When it comes to Dahlia pinnata, many people may be fairly familiar with it. It is one of the more common flowering plants in daily life, and its figure can even often be seen along both sides of roads or in community flowerbeds. Dahlia pinnata is relatively short, but its flowers are elegant in posture and rich in color, with extremely high ornamental value. So how exactly should Dahlia pinnata be grown?

How to Grow Dahlia pinnata

1. Soil preparation: You can use peat + furnace slag + ceramsite, in ratios of 2 parts + 2 parts + 1 part respectively.

2. Temperature requirements: In general, taking the Kunming area as an example, it can be planted in courtyards in all four seasons. Dahlia pinnata can withstand temperatures between 8-30 degrees.

3. Fertilization requirements: After potted Dahlia pinnata survives, generally referring to fertilization during the growth period, fertilizing once a month is enough (compound fertilizer or special flower fertilizer can be used).

4. Watering time: The watering cycle for Dahlia pinnata is about 5-7 days. When watering, try to arrange it at noon on sunny days when the temperature is relatively high.

5. Light environment: No matter what kind of flower you grow, a lack of light is not acceptable, and Dahlia pinnata is no exception. It is best to frequently let the plant receive photosynthesis, which is beneficial to the healthy growth of Dahlia pinnata. Remember not to expose it to the scorching sun.

Cultivation Methods and Precautions for Dahlia pinnata

1. Soil

Potted Dahlia pinnata needs a suitable medium. You can mix garden soil, coal slag, and fine sand to make the medium, and you can also add some leaf mold. Spread broken tiles at the bottom of the flower pot as a drainage layer, then add the medium, and you can appropriately add some base fertilizer.

2. Light and temperature

The growth of Dahlia pinnata requires sufficient light. Daily light should preferably not be less than 6 hours, and it should not be overly shaded, so as to avoid poor growth. In spring, autumn, and winter, Dahlia pinnata can be given direct light exposure, but in the high-temperature summer, try to avoid direct light and place it in a bright place for care. In terms of temperature, Dahlia pinnata prefers a cooler environment and is relatively afraid of heat. During summer high temperatures and strong sunlight, it should be properly shaded, or water can be sprayed to lower the temperature. It is also not tolerant of frost. When the temperature drops below 10°C, it will enter dormancy. The suitable growth temperature for Dahlia pinnata is between 15°C and 28°C.

3. Water and fertilizer management

Dahlia pinnata does not have high requirements for water and fertilizer. Generally, water more in summer and less in spring and autumn, keeping the potting soil neither dry nor wet, and avoiding water accumulation in the pot. In rainy seasons, pay attention to drainage. When fertilizing, apply sufficient base fertilizer at planting time. During the growth period, apply a dilute liquid fertilizer every 10-15 days. When flowering, apply some 1%-3% potassium dihydrogen phosphate to promote flowering.

4. Precautions: Pests and diseases are not common in Dahlia pinnata, but there can be harm from powdery mildew, brown spot disease, viral disease, and snout moth larvae, which need to be discovered in time and prevented and controlled early.

When Does Dahlia pinnata Bloom

This plant can actually bloom all year round in suitable places, and its flowering period is very long. However, in regions with distinct seasons, its flowering period is generally concentrated from May to October.

How to Make Dahlia pinnata Bloom in Winter

From the growth habits of Dahlia pinnata, we can see that it is very difficult to plant Dahlia pinnata outdoors in open ground and make it bloom. We can choose the potted method and keep it indoors for cultivation. Choose to sow in October. When the temperature is below 15°C, move it into a shed or greenhouse for cultivation, or build a double-layer plastic heat-preservation shed, so as to help Dahlia pinnata maintain a growth temperature of 10°C to 25°C. Each day, artificial methods can be used to let Dahlia pinnata receive six to ten hours of sunlight, and keep the day-night temperature difference above 5°C.

In addition, pay attention to fertilization. The fertilizer can be selected by mixing nitrogen, phosphorus, and potassium fertilizers evenly before use. Be sure to control the amount of nitrogen fertilizer and not apply too much, otherwise it will cause the Dahlia pinnata plant to fall over. If you do not want Dahlia pinnata to grow too tall, you can control it by pinching off the growing tips. By forcibly controlling external conditions in this way, Dahlia pinnata can bloom in winter!

In daily life, many people like to grow some beautiful flowers and plants at home. It is a very good way to cultivate character and mood, and at the same time it can add colorful hues to the home. Dahlia pinnata is also often grown as a potted plant at home as a decorative plant.