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Helianthus annuus

TAXONOMIE

FamilleAsteraceae

GenreHelianthus

Zone4

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À PROPOS

Helianthus annuus, commonly known as the common sunflower, is an annual plant in the family Asteraceae, native to North America. It is known for its large, bright yellow flower heads and tall stature. Sunflowers are often grown for their seeds, which are used for food and oil production. They thrive in temperate climates and are a popular choice for gardens and agricultural fields.

AUSSI CONNU SOUS LE NOM

Common Sunflower

Sunflower

Helianthus annuus f. annuus

Helianthus annuus f. fallax

Helianthus annuus f. lenticularis

Helianthus annuus f. silvester

Helianthus annuus lenticularis var. aridus

Helianthus annuus subsp. annuus

Helianthus annuus subsp. jaegeri

Helianthus annuus subsp. lenticularis

Helianthus annuus subsp. texanus

Helianthus annuus var. annuus

Helianthus annuus var. apicalis

Helianthus annuus var. basalis

Helianthus annuus var. chrysanthemoides

Helianthus annuus var. convolutus

Helianthus annuus var. coronatus

Helianthus annuus var. dilutus

Helianthus annuus var. flavobasis

Helianthus annuus var. indicus

Helianthus annuus var. latibasis

Helianthus annuus var. lenticularis

Helianthus annuus var. macrocarpus

Helianthus annuus var. niger

Helianthus annuus var. pallescens

Helianthus annuus var. passiflora

Helianthus annuus var. primulinus

Helianthus annuus var. pumilus

Helianthus annuus var. reversus

Helianthus annuus var. revolutus

Helianthus annuus var. ruberrimus

Helianthus annuus var. selene

Helianthus annuus var. semivinosus

Helianthus annuus var. texanus

Helianthus annuus var. tortuosus

Helianthus annuus var. trizonatus

Helianthus annuus var. vinosissimus

Helianthus annuus var. vinosus

Helianthus aridus

Helianthus aridus var. aridus

Helianthus erythrocarpus

Helianthus grandiflorus

Helianthus indicus

Helianthus jaegeri

Helianthus lenticularis

Helianthus lindheimerianus

Helianthus macrocarpus

Helianthus multiflorus

Helianthus ovatus

Helianthus petiolaris

Helianthus platycephalus

Helianthus pumilus

Helianthus tubaeformis

APERÇU

VPDCalculer

EauHumide

SolLimoneux

LumièreLumière directe (6 Heures)

Température25° C

Humidité60

GDD1 350

pH6,5

Pression1 013

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Demander

DÉTAILS

Instructions d'entretien

Sunflowers require full sun and should be planted in a location that receives at least six hours of direct sunlight per day. They prefer moderate temperatures and can tolerate a range of humidity levels. Water the plants regularly, allowing the soil to dry out partially between waterings. Ensure good air circulation to prevent fungal diseases.

Récolte

Helianthus annuus, commonly known as the sunflower, is typically ready for harvest when the back of the flower heads turn yellow-brown and the seeds are plump and hard. This usually occurs about 90 days after planting. To harvest, cut the flower heads with a few inches of stem attached and hang them upside down in a dry, well-ventilated area to allow the seeds to fully mature and dry. Once dry, the seeds can be easily removed by rubbing two heads together or by hand. Ensure to protect the drying heads from birds and rodents.

Sol

Sunflowers prefer well-draining loamy soil with a neutral to slightly acidic pH. The soil should be rich in organic matter to support their rapid growth. Good drainage is essential to prevent root rot, so avoid heavy clay soils that retain water.

Engrais

Use a balanced fertilizer with an N-P-K ratio of 10-10-10. Apply the fertilizer at the time of planting and then every few weeks during the growing season to support healthy growth and flowering. Avoid over-fertilizing, as this can lead to excessive foliage growth at the expense of flowers.

Rempotage

Sunflowers are typically grown directly in the ground or in large containers. If growing in containers, choose a pot that is at least 12 inches deep to accommodate the plant's root system. Repotting is generally not necessary for annual sunflowers, but ensure the container has good drainage.

Propagation

Sunflowers are easily propagated from seeds. Sow the seeds directly in the garden after the last frost date, spacing them about 6 inches apart. Thin the seedlings to about 12-18 inches apart once they have grown a few inches tall. Seeds can also be started indoors a few weeks before the last frost and transplanted outdoors.

Taille

Pruning is not typically required for sunflowers. However, you can remove spent flowers to encourage the plant to produce more blooms. Deadheading also helps to prevent the plant from self-seeding excessively.

Toxicité

Sunflowers are non-toxic to pets and humans. All parts of the plant are safe, making them a great choice for gardens where children and pets are present.

Supplémentaire

Sunflowers can attract pollinators such as bees and butterflies to your garden. They can also be used as a natural trellis for climbing plants like beans. Harvest sunflower seeds when the back of the flower head turns brown and the seeds are plump and mature.

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Mesure avec précision les paramètres de base de votre plante – humidité du sol, lumière, température et humidité – ainsi que des paramètres composés tels que le déficit de pression de vapeur (VPD) et les degrés-jours de croissance (GDD).

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Évalue les données de vos plantes, la météo actuelle, la saisonnalité et plus encore pour vous informer avec précision des besoins de vos plantes. L'application est également dotée de nombreuses fonctionnalités supplémentaires pour garantir l'épanouissement de vos plantes.