Helianthus annuus aka Sunflower
Taxonomy
Helianthus annuus, commonly known as the common sunflower, is an annual forb of the Helianthus genus that is native to western areas of the United States, Canada and Mexico. It is a coarse, hairy, leafy and fast-growing annual plant that grows up to 5-10 feet tall. The species features orange-yellow ray petals and brown to purple center disks with 3-6 inch wide sunflower heads. It's grown as a crop for its edible oil and fruiting body, and can also be used as wild bird food, livestock forage, an ornamental plant, and in some industrial applications. It is the state flower of Kansas and is found growing along roads, fields, fences and waste areas. Common sunflowers also make a great houseplant and should be kept in direct sunlight in order to thrive and require regular watering.
Common names
Sunflower, Common SunflowerHow to care for Sunflower
Difficulty
With a bit of knowledge and dedication, you can successfully care for Sunflower, making it a rewarding choice for those seeking a moderate challenge.
Water
Sunflower should be watered regularly, allowing the soil to dry out between waterings.
Soil
Sunflower loves a well-draining soil. Perlite and vermiculite help with drainage, while coco coir adds organic matter, so a good potting soil mix will have all three. You can improve store-bought soil by adding some perlite to it.
Lighting
To ensure optimal growth, the Sunflower prefers bright indirect light for 6-8 hours each day. Insufficient light can result in slow growth and leaf drop, so it's important to find a well-lit location for this plant. Place it near a window, within a distance of 1 meter (3 feet), to enhance its potential for thriving.
Dormancy
During the wintertime, it is common for Sunflower plants to go dormant and their growth rate may slow down. Therefore, the amount of waterings should be spaced out more.
Toxicity
Sunflower is not known to cause harm to humans or pets.
Humidity
The Sunflower does not need extra humidity. Plants primarily absorb water through their root system, making soil watering the best way to provide humidity to your plants.
Fertilizer
The Sunflower should be repotted when it has doubled in size or annually, whichever comes first. Providing fresh potting soil with all the essential nutrients each year ensures the plant's well-being, eliminating the need for fertilizer. Remember, plants derive their energy from the sun and not fertilizer.
Growth-pattern
New growth will sprout from the top of the Sunflower as it grows vertically.
Region of origin
Sunflower’s native range is the Americas.
Flower
Yes, if you provide your Sunflower with adequate sunlight and water, you can expect it to bloom.
More info:
Wikipedia
More Species in Helianthus Genus
Helianthus doronicoides
Helianthus californicus California Sunflower
Helianthus lenticularis
Helianthus giganteus Giant Sunflower
Helianthus annuus Sunflower
Helianthus niveus Snowy Sunflower
Helianthus tuberosus Jerusalem Artichoke
Helianthus microcephalus Woodland Sunflower
Helianthus petiolaris Prairie Sunflower
