When Do Sunflowers Bloom? Key Points of Cultivation Techniques Explained

As a symbol of sunny, clear weather, the sunflower simply cannot be left out. Because of its distinctive shape and color combination, the sunflower always gives a first impression of cheerfulness and vitality, so it is also called chaoyanghua, zhuanrilian, sunflower, and so on. Besides being visually appealing, what is truly remarkable is that it also has many uses, such as pressing sunflower seed oil, making sunflower seed snacks, and so on. So are you clear about when sunflowers bloom? What are the key points of cultivation techniques?

1. When do sunflowers bloom?

1. The flowering period of sunflowers each year is roughly from July to August. If calculated based on sowing in April, a summer flowering period is quite normal. The seed maturity period of sunflowers is generally concentrated in August and September, and by this time the flowering period has basically ended.

2. If you need sunflowers to bloom year-round, you can use the accumulated temperature method. When sunflowers accumulate a certain amount of temperature during growth, they can also bloom. This temperature needs to be controlled by each person according to their own growing experience; it should not be too low or too high, and there is a standard for it.

2. Sunflower cultivation techniques

The key technical points of sunflower cultivation are mainly summarized from aspects such as the selection of land and seeds, temperature, and watering.

1. Soil

Sunflowers are suitable for planting in relatively level land. The soil should not be too sticky and should have good drainage. Because it reproduces by seed, peat soil is preferable during sowing. The choice of soil determines the future growth of sunflowers, and this is very important.

2. Temperature

Because sunflowers are tropical plants, they are still highly adaptable to temperature. When the temperature remains stable above 2°C, the seeds can slowly begin to germinate, and when the ground temperature exceeds 8°C, this meets the basic requirement for seedlings to emerge. The best temperature for actual germination is above 30°C, but do not exceed 40°C. Because they are tropical plants, the higher the temperature, the more favorable it is for sunflower growth.

3. Watering

The sunflowers we have seen are all relatively tall and their leaves are very dense, so their demand for water is naturally greater. Generally, from sowing onward they are still in a fairly drought-tolerant stage and do not need too much water. By the time they reach the flowering stage, they enter a period of very high water demand. But June and July are also the rainy season, with abundant rainfall, which satisfies the sunflower's water requirements.

4. Light

Sunflowers are short-day plants, and their overall response to sunlight is not as obvious as that of other plants. Because they are tropical green plants, they have strong adaptability and phototropism. During the growth period, being able to enjoy sunlight can promote rapid nutrient-driven flowering and pollination.

That is all we have summarized about sunflowers for today. Both the flowering and cultivation of sunflowers require everyone to plant and grow them with care. Every green plant has vitality, and your careful watering will naturally return you with a different kind of beauty to decorate your life.