When Does the Dahlia Bloom? A Detailed Guide to Its Blooming Period

The dahlia is also known as the dahlia flower, Dali flower, Eastern chrysanthemum, passionflower, sweet potato flower, and so on. It is a perennial herbaceous plant of the genus Dahlia in the aster family, native to Mexico. Mexicans regard it as a symbol of generosity and magnificence, and therefore honor it as the national flower. It is now cultivated in most countries around the world and is known as one of the world's famous flowers. Let's take a look below at when the dahlia blooms!

When does the dahlia bloom?

When planted outdoors, the dahlia blooms from May to June and from September to November, and in the height of summer it goes dormant and does not bloom. In southern China, it blooms from February to June in spring. The dahlia is popular for its long blooming period; from autumn to spring it blooms continuously, each flower can last 1 month, and the blooming period lasts half a year.

What colors do dahlia flowers come in?

The flower colors of the dahlia fall into seven major color series: red, purple, white, yellow, orange, dark, and bicolor. The flowers come in single and double forms; single flowers stay open for a shorter time, while double flowers stay open longer. The flower characteristics and petal shape variations are the main basis for identifying cultivars, with cultivar groups in flower forms such as ball type, chrysanthemum type, peony type, decorative type, saucer type, plate type, hydrangea type, and herbaceous peony type. It is famous for its magnificent colors and beautiful flowers.

Reasons why the dahlia does not bloom

1. Improper care: Factors such as sunlight, watering, and temperature may cause poor growth of the dahlia. Insufficient sunlight or excessive watering will cause the plant to grow leggy, producing only leaves and no flowers. And too much fertilizer or overly wet potting soil will cause poor root respiration, leading to root rot, which likewise affects blooming.

2. Pest and disease infection: During the dahlia's blooming period, that is, when the flower buds are differentiating, if it is disturbed by pests and diseases, the flower buds will have difficulty differentiating, and then it will be difficult for flowers to appear.

What should you do if the dahlia does not bloom?

1. Light: Whether there is sufficient light is the key to growing dahlias. Insufficient light will cause the branches to grow leggy and weak, and because the plant's internal nutrients are insufficient, it cannot bloom or will bloom only sparsely.

2. Fertilizing: Before planting or before the plant sprouts, sufficient base fertilizer must be applied. If the base fertilizer is insufficient, the number of top dressings can be appropriately increased.

3. Cold protection: In relatively cold regions, after winter begins, some dry grass and the like should be spread over the ground, or the dahlia's tuberous roots should be dug up and dried, then stored indoors, and around Qingming the following year they can be planted in pots or in the ground.