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The sunflower is a beautiful yellow flower that is very easy to grow at home, in pots or in the ground.
In summary, what you need to know:
Last name : Helianthus annus
Family : Asteraceae
Type : Annual
Height : 2 to 4 m
Exposure : Sunny
Ground : Rich enough
Flowering : Summer
With the sunflower, the decorative effect is guaranteed in the garden.
Sowing and planting sunflower
First of all, make sure that your soil is well drained because sunflowers are very afraid of too wet soils.
Sunflowers will only thrive in full sun.
The sunflower sowing period begins in spring under cover but it will be necessary to wait until May to sow in the ground.
Sunflower emergence and growth is rapid, which is why it is best to sow directly in the ground and outdoors after all risk of frost.
- Start by loosening the soil well by turning the soil over in depth
- Form a groove about 3 cm deep
Perform a sowing "In pocket" . We call a “hole”: a hole in which we plant several seeds.
- Place a few seeds every 20 cm then cover
- Water regularly in fine rain, as soon as the soil is dry
If you buy already formed sunflower plants, this will be done from April to June.
- Water regularly at the beginning, especially in hot weather.
Sunflower in a pot:
Growing sunflowers in pots is quite possible and even a very good idea for those who have a terrace or balcony.
- Take a pot of sufficient diameter to allow the roots to develop (about 30 cm minimum)
- Fill with potting soil
- Form a small hole in the middle and place 3-4 sunflower seeds in it
- Water regularly
- When your sunflowers have formed 3-4 leaves, keep the most vigorous young shoot
- Continue to water regularly
In pots, it is often preferable to place a stake to prevent the sunflower from sagging in the wind.
Easy to maintain, the sunflower requires little care when properly installed. A few gestures can nevertheless allow you to prolong flowering and optimize flower renewal.
- Remove faded flowers as you go.
- At the end of the season, you can pull everything out because the sunflower does not grow back from one year to the next.
Watering the Sunflower:
This is one of the lighthouse points in the maintenance of the sunflower, especially if it is pot grown.
- Sunflowers fear drought and should be watered when the soil is dry.
- It dreads too wet soils and should therefore be watered moderately.
- The sunflower in a pot requires regular watering, as soon as the potting soil is dry on the surface.
Although vigorous and particularly resistant to disease, young plants can be preyed upon by slugs and snails.
- Sunflowers can be the victim of attacks from aphids.
- If you start by seeing white or light yellow spots on the leaves, it is surely the mildew.
There are perennial and annual species, but it is the latter that are most often cultivated.
- From perennial species, note thehelianthus decapetalus and atrorubens.
- They are relatively tall but do not reach the heights that annual species can reach.
- The most common annual sunflower is helianthus annuus with large flowers that can measure up to 40 cm in diameter and their large size, up to 4m high
- If you wish to constitute a sunflower hedge, you can choose thehelianthus Russian Giant, a nice way to delimit the vegetable garden or a summer corner to rest ... in the sun.
- For your cut flowers, thehelianthus ‘Prado Red‘Is ideal because the flowers are not too big (about 10 cm in diameter) and hold very well in a bouquet.
To know about the sunflower
Van Gogh made the sunflower internationally famous, but it is in the garden and in flower beds that it finds its place and that it amazes us with its characteristic yellow.
Native to America, the sunflower is grown as an annual. He is certainly the best known of the Helianthus. There are traces of cultivation of sunflower in mexico dating back over 4000 years.
It is also one of the largest with a size that can go up up to 4 m high.
Regardless of the sunflower species, practically all of them have the yellow color reminiscent of the sun and their flower rotates as the sun changes.
Sunflowers are also found with undertones of yellow, orange and red.
- Sunflowers have the advantage of being particularly honey-bearing, and therefore of participating in the pollination of plants by attracting bees.
- They are very easy to grow and often flattering flowering.
These plants develop quite quickly, they will be perfect in beds, against a well exposed wall or in pots for the smallest species.