Dahlia Planting Management and Cutting Propagation Techniques

Growing Techniques Jan 1, 1970 0 views

Dahlia planting management, dahlia cutting propagation techniques

In our lives, plants are a part of our daily existence, and as the times keep developing, all kinds of flowers appear in our lives. The dahlia is native to Mexico and is the national flower of Mexico. Let's take a look at dahlia planting management and cutting propagation techniques!

Dahlia Planting Management

  1. Dahlias are generally potted in mid-October, with 1-2 plants per pot. After potting, spray New High Lipid Film on the plant surface, which helps the plants grow quickly.

  2. When the seedlings grow to 10-12 cm tall, leave 2 nodes and pinch off the growing tip, and train each pot to have 6-8 branches. The final pinching is done 40-50 days before the Spring Festival, which makes it easier to control flowering during the Spring Festival period.

  3. Watering: Water the dahlias 2-3 times a day. Before flowering, water can be appropriately restricted to promote blooming.

  4. Fertilizing: In the early stage, mainly apply nitrogen fertilizer; in the later stage, mainly apply phosphorus and potassium fertilizer. Generally, apply inorganic fertilizer once every 10 days, and organic fertilizer once a month.

  5. Pest and disease control: Spray pesticide regularly to protect the basal leaves.

  6. Staking with bamboo: After the final pinching and branch selection, begin staking with bamboo, one bamboo strip per branch, and at the same time remove excess side branches to allow for ventilation.

  7. Bud thinning: When the dahlia buds grow to the size of a peanut, keep 2 buds per branch and remove the others. During the bud stage, spray Flower Thickening Spirit to make the petals plump, the flower colors vivid, and the flowering period longer.

  8. Bud setting: When the buds show red, keep only 1 bud per branch.

Dahlia Cutting Propagation Techniques

Site Selection and Land Preparation

  Choose a field with deep topsoil, loose and fertile soil, flat terrain, and good drainage. Before deep plowing, apply 125 kg of superphosphate per mu as base fertilizer, plus 0.5 kg of 50% diazinon for soil disinfection. Plow the soil about 15 cm deep, then level and rake it flat, and make raised beds or flat beds 2 m wide with ditches 20 cm deep. Open the inner and outer "three ditches" well to facilitate drainage.

Cutting Method

  From June to August, when the side buds grow to 15 to 20 cm, cut and plant them immediately while removing side buds. Cuttings need 3 buds; keep the upper 2 buds, and for the 3rd bud cut down to the leaf base and remove the leaf blade. Insert into the soil to a depth reaching the second bud, water thoroughly, set up supports, and shade with double layers of 50% shade netting.

  On sunny days, water once in the morning and once in the evening, and water continuously for half a month. Keep soil moisture at 90%. Roots form after 3 weeks, with a very high survival rate, and they can bloom in the autumn of the same year.

Field Management

  After the cuttings survive, in combination with cultivating and weeding, apply one supplemental dose of saturated compound fertilizer extract before flowering and once after flowering. For each backpack sprayer (about 12.5 kg), add 400 ml of stock solution for foliar feeding. After dahlias have rooted, deep cultivation is no longer suitable, so as to avoid damaging the tuberous roots and to prevent weed problems. Because the plants are succulent and soft, supports must be set up to prevent the stems and leaves from breaking. For small-flowered varieties, pinch the growing tip when the seedlings are 15 cm tall, making the plants short and sturdy with more flowers. Remove spent flowers promptly to extend the flowering period.

Disease and Pest Control

  The main diseases of dahlias are powdery mildew and brown spot disease. From June to October they harm the leaves, tender stems, flower stalks, and flower buds of dahlias, affecting normal growth. If found, control them early. Spray with 50% carbendazim 500 times solution or 50% zineb 800 times solution, which can effectively control the occurrence of the diseases.

Harvesting and Storage

  The second flowering period of dahlias is from September to October. When the second flowering period ends and the plants stop growing, that is, before Frost's Descent, leave 10 cm of root crown, cut off the branches and leaves, dig up the tuberous roots, and dry them for 1 to 2 days. After the surface is dry, store them in sand in a cold room at 3 to 5°C. The following spring they can sprout, grow branches, and bloom.

Summary: The above is the planting management of dahlias and the related cutting propagation techniques. Friends in need can refer to this information. Different flowers have different propagation methods, and there are many differences in specific details. Please pay a little attention during the planting process.

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Dahlia Cutting Propagation Techniques

Dahlia (Dahlia pinnata Cav.), also known as dahlia, Tree Dahlia, Japanese chrysanthemum, dahlia chrysanthemum, and sweet potato flower, is a plant of the Asteraceae family and the genus Dahlia. It is a perennial herb with huge club-shaped tuberous roots. The stems are erect, much branched, 1.5-2 m tall, and stout. It is native to Mexico, and Mexicans regard it as a symbol of generosity and magnificence, so they honor it as the national flower.

  At present, most countries in the world cultivate it, and new varieties are released from time to time when bred. According to statistics, there are already more than 30,000 dahlia varieties, making it one of the species with the most flower varieties in the world. Dahlia has many famous names for its flower colors and flower shapes, which are rich and varied, and it is one of the famous flowers of the world; it can also activate blood circulation and dissipate blood stasis, and has certain medicinal value.
  Dahlias can be propagated by sowing, but root division and cuttings are the main methods. The author now gives a brief introduction to cutting propagation techniques.
  1. Site selection and land preparation: Choose a field with deep topsoil, loose and fertile soil, flat terrain, and good drainage. Before deep plowing, apply 125 kg of superphosphate per mu as base fertilizer, plus 0.5 kg of 50% diazinon for soil disinfection. Plow the soil about 15 cm deep, then level and rake it flat, and make raised beds or flat beds 2 m wide with ditches 20 cm deep. Open the inner and outer “three ditches” well to facilitate drainage.
  2. Cutting method: From June to August, when the side buds grow to 15 to 20 cm, cut and plant them immediately while removing side buds. Cuttings need 3 buds; keep the upper 2 buds, and for the 3rd bud cut down to the leaf base and remove the leaf blade. Insert into the soil to a depth reaching the second bud, water thoroughly, set up supports, and shade with double layers of 50% shade netting. On sunny days, water once in the morning and once in the evening, and water continuously for half a month. Keep soil moisture at 90%. Roots form after 3 weeks, with a very high survival rate, and they can bloom in the autumn of the same year.
  3. Field management: After the cuttings survive, in combination with cultivating and weeding, apply one supplemental dose of saturated compound fertilizer extract before flowering and once after flowering. For each backpack sprayer (about 12.5 kg), add 400 ml of stock solution for foliar feeding. After dahlias have rooted, deep cultivation is no longer suitable, so as to avoid damaging the tuberous roots and to prevent weed problems. Because the plants are succulent and soft, supports must be set up to prevent the stems and leaves from breaking. For small-flowered varieties, pinch the growing tip when the seedlings are 15 cm tall, making the plants short and sturdy with more flowers. Remove spent flowers promptly to extend the flowering period.
  4. Disease and pest control: Dahlias mainly have powdery mildew and brown spot disease, which from June to October harm the leaves, tender stems, flower stalks, and flower buds of dahlias and affect normal growth. Once found, control them early. Spray with 50% carbendazim 500 times solution or 50% zineb 800 times solution, which can effectively control the occurrence of the diseases.
  5. Harvesting and storage: The second flowering period of dahlias is from September to October. When the second flowering period ends and the plants stop growing, that is, before Frost's Descent, leave 10 cm of root crown, cut off the branches and leaves, dig up the tuberous roots, and dry them for 1 to 2 days. After the surface is dry, store them in sand in a cold room at 3 to 5°C. The following spring they can sprout, grow branches, and bloom. (Shanghai Zhang Weifang)

Dahlia Planting Management and Cutting Propagation Techniques

Dahlia planting management, dahlia cutting propagation techniques

Dahlia Cutting Propagation Techniques

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