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Dahlia: how to grow and keep it blooming throughout the seasons traduzido por: OPENROUTER

The dahlia combines varied shapes and colors, with cultivation favored by good luminosity, fertile soil, and balanced watering traduzido por: OPENROUTER

By CASACOR Publisher

Submitted at Jul 7, 2026, 11:00 AM

05 min de leitura
Dália.

Dália. (Unplash/Divulgação)

The dahlia is an ornamental species characterized by the diversity of colors, shapes and sizes. With flowers that can range from a few centimeters to quite voluminous specimens, it is used both in gardens and in pots, bringing movement and prominence to different landscape compositions.

Although it presents an exuberant blooming, its cultivation depends on some care related to lighting, soil and irrigation. When these conditions are respected, the plant develops vigorously and produces flowers for several months. Below, we have gathered the main ways to grow dahlias at home.

Main characteristics of the dahlia


Originally from the mountainous regions of Mexico, the dahlia belongs to the genus Dahlia, which brings together dozens of species and thousands of hybrid varieties developed over the centuries. The plant stands out for its enormous diversity of shapes, which includes simple, double, pompom, decorative and cactus-like flowers.

Dahlia traduzido por: OPENROUTER

Dália. (Freepik/Divulgação)

In addition, dahlias present a wide color palette, with white, yellow, orange, red, pink, lilac and purple flowers. Some cultivars combine two or more tones on the same flower, a feature that expands their possibilities in landscaping.

Where to plant the dahlia


The dahlia prefers places that receive plenty of light. Ideally, the plant should receive between six and eight hours of direct sunlight daily, a condition that favors more abundant blooming and the development of vigorous stems.

Dahlia traduzido por: OPENROUTER

Dália. (Unplash/Divulgação)

It can be grown directly in the garden or in medium and large pots, as long as there is enough space for the development of the tuberous roots. In regions with very hot climates, light shade during the most intense hours of the afternoon helps to preserve the flowers for longer.

How to grow the dahlia at home


Growing the dahlia starts with choosing a fertile, light and well-drained soil. Before planting, it is recommended to incorporate organic matter, such as compost or worm humus, to improve the soil structure and favor the development of the roots.

Planting

Dahlias are usually grown from tubers, which must be positioned carefully to avoid damage during planting. They are buried at a few centimeters deep, maintaining a spacing compatible with the size of the chosen variety.

Watering

The soil should remain slightly moist, but never waterlogged. During the period of growth and flowering, watering tends to be more frequent, while during dormancy periods the need for water decreases significantly.

Fertilization

Periodic fertilization favors more intense flowering. Fertilizers rich in phosphorus and potassium usually stimulate flower formation, while excess nitrogen can result in greater leaf production at the expense of flowering.

How to prolong the flowering


Removing already wilted flowers is a simple practice that encourages the plant to produce new buds. This management prevents the dahlia from directing energy to the formation of seeds, prolonging the flowering period.

Dahlia traduzido por: OPENROUTER

Dália. (Unplash/Divulgação)

In larger varieties, it may also be necessary to use stakes to support the flower stems. This support reduces the risk of breakage caused by the weight of the flowers or the action of the wind.

Pruning and maintenance


The maintenance of the dahlia is relatively simple. In addition to removing dried flowers, it is recommended to eliminate yellowed leaves and weakened branches to favor air circulation between the vegetation and reduce the incidence of diseases.

Dahlia traduzido por: OPENROUTER

Dália. (Freepik/Divulgação)

At the end of the flowering cycle, especially in regions with harsh winters, the tubers can be removed from the soil, cleaned, and stored in a dry, ventilated place until the next planting season. In areas with milder climates, many varieties are able to resprout naturally.

CASACOR Publisher is an exclusive content-creating agent, developed by CASACOR's Technology team based on the knowledge base of casacor.com.br. This text was edited by Milena Garcia.

traduzido por: OPENROUTER