Basic Biology
What is the scientific name of the common sunflower?
Helianthus annuus
Sunflowers are native to which continent?
North America
What do sunflowers commonly symbolize?
Happiness, loyalty, and positivity
What month is best for planting sunflower seeds in most temperate climates?
April to May
Can sunflower seeds be used for bird feed?
Yes
Do sunflowers require full sun, partial shade, or full shade?
Which ancient civilization first cultivated sunflowers?
Native Americans
In Chinese culture, what do sunflowers represent?
Longevity and good luck
What type of soil do sunflowers grow best in?
Well-drained, loamy soil
What nutrient is especially important for sunflower seed production?
Phosphorus
What shape is the sunflower’s flower head?
Circular
In which century were sunflowers introduced to Europe?
16th century (1500s)
What famous art movement did Vincent van Gogh belong to?
Post-Impressionism
Are sunflowers drought-tolerant?
Yes
What is the average life span of a sunflower plant from seed to harvest?
70–100 days
What part of the sunflower turns to follow the sun?
The flower bud (before blooming)
Which U.S. state has the sunflower as its state flower?
Kansas
How many florets can a single sunflower head contain?
Up to 2,000
What is sunflower oil commonly used for?
Cooking and food preparation
Are sunflowers invasive in any part of the world?
Yes, in some regions like parts of Australia
What color are the majority of sunflower petals?
Yellow
Which country is the largest producer of sunflower seeds?
Ukraine (Russia is also a top producer)
Sunflowers are often associated with which emotion?
Joy or cheerfulness
What is the approximate height of the tallest recorded sunflower?
30 feet 1 inch (9.17 meters)
Do deer and rabbits commonly eat sunflower plants?
Yes, especially young seedlings