The Mongolian Giant Sunflower is a majestic sunflower variety known for its towering height and impressive flower heads. These sunflowers can reach up to 14 feet tall, with massive blooms measuring 12 to 18 inches across. They produce some of the largest sunflower seeds, twice the size of an average sunflower seed. They are not only delicious but also highly nutritious. These sunflowers are perfect for attracting pollinators, especially bees, and creating a stunning visual display in your gardenhome garden A designated area around a residential property where individuals cultivate plants, fruits, vegetables, or ornamental plants for personal use. It comprises a farming system that combines physical, social, and economic functions on the area of land around a family home, providing a sustainable source of food and other benefits for the household, extended family, and friends..Â
Mongolian Giant | Sunflower
Quick Info
Days to Maturity: 90-100
Scientific Name: Helianthus annuus
Family: Asteraceae
Plant Type: Sunflower
Hardiness: Frost Sensitive
Plant Dimensions: 9-14′ tall, 12-18″ wide (heads)
Sowing Info
How to Start Indoors: Start your seeds indoors 3-4 weeks before your last spring frost date. When starting indoors, make sure you provide the young plants plenty of light, so they won’t become tall too fast and fall over. Transplant when the temperature is above 18ºC/65ºF.
How to Start Outdoors: Start your seeds outdoors 1 week before your last spring frost date, or when the soil temperature is around 21ºC/70ºF. Protect your seeds with 1/4 inch wire mesh on top to prevent pest from eating the seeds.
Planting Depth (Outdoors): 1″-2″
Plant Spacing (Outdoors & When Transplanting): 18-24″ apart
Growing Info
- Sunlight: The Mongolian Giant Sunflower grows best in full sun.
- Soil: Grows best in well-drained, high in organic matter soil, with a pHpH A measure of the acidity or alkalinity of a solution on a scale of 0-14, with 7 being neutral. In aquaponics it refers to water quality and its effect on nutrient absorption and the health of fish, plants, and bacteria. of 6.0 and 7.5.
- Watering: Sunflower needs a lot of water to grow thicker stems. When the stems are thicker, the sunflower head will be bigger. Water 2–4 times a week depending on the weather.
- Fertilizing: Fertilize with a balanced fertilizer during the growing season. Make sure to apply compost before you plant your sunflower seeds (or transplants) into the ground.
Harvesting
Sunflowers are ready to pick when the flower heads are brown, the seeds are plump, and the plant’s foliage has died back. Make sure to pick the heads before all the seeds drop.
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