The hometown is called sweet potato flower. It has a variety of designs and colors. The varieties alone are more than 30000. The big ones can exceed 30cm in diameter. The posture is not inferior to peony at all, so it's also called Tianzhu peony. Now flowers take you to enjoy the beautiful Dahlia!
According to Huahua, dahlia can be said to be the only choice for lazy people to raise flowers, because it can grow well without any care, but if you want the flowers to bloom, you should pay attention to the following points
Soil: loose and fertile humus or sandy soil with good drainage is most suitable for the growth of Dahlia. It can also be mixed with vegetable soil, saprophytic soil and sandy soil in the proportion of 5:3:2.
Water content: the size of water will affect the height of the plant. During the seedling stage, attention should be paid to water control to prevent the excessive growth of branches and leaves. When watering, the basin soil should be wet without being wet according to the principle of dry through watering. In summer high temperature, spray can be humidified around the flowerpot every afternoon.
Light: if Dahlia wants to bloom more, it's better to keep more than 6 hours of light every day. When the light is strong in summer, it needs to be properly shaded to avoid burning leaves and affecting flowering.
Fertilization: Dahlia likes fertilizer. Generally, it is applied with diluted liquid or compound fertilizer. In the spring and autumn growing season, it is topdressing once every 10 days or so. It is not applied in high temperature weather in summer.
Dahlia in summer will enter a semi - dormant state, in order to safely over the summer must pay attention to these points:
1. Root system maintenance: Dahlia has a large fleshy root system. In summer, it is not allowed to be wet or hot. It is easy to rot in high temperature weather. Therefore, when watering, it is necessary to see that it is wet when it is dry, and the soil is loose and breathable. After heavy rain, it is necessary to clean up the water in the basin in time.
After finding rotten roots, cut off the broken roots immediately, change pots for soil, or "amputate" cuttings to reproduce.
2. Shade maintenance: avoid direct sunlight in summer. It is easy to be exposed to sunshine after rain when cultivating outdoors. It is necessary to pull the sunscreen in time for protection.
3. Pruning and maintenance: Dahlia likes to be cool but not stuffy. In summer, when the branches and leaves are too dense and full, it is necessary to prune the sparse branches and keep 3-4 branches on the side branches. After flowering, it is necessary to prune the open flowers and dead branches, and cut the main stem short to 15-25cm.
4, pest protection: Summer dahlia is most susceptible to Botrytis cinerea and powdery mildew, floral browning, irregular shape, leaf edge long spots, dry, softening, when these phenomena occur, we should promptly eliminate and destroy the disease branches, and use 50% carbendazim WP 500 times liquid spray to prevent it.
