Sunflowers seeds run approximately $25 per 10 pounds of seed. This allows you to grow your favorite sunflower varieties each year without the expense of new seed stock every spring. Planting sunflower seeds. Calculate the expenses of seed, fertilizer, nutrients, pesticides and labor costs. Fix your sunflower farming budget. The seeds are usually ready for harvest 30 to 45 days after the flower opens, but that depends a lot on the weather. Slow down plants. Cover the sunflower seed with dirt. First, fix the land area where you will grow a sunflower. Sunflower seed heads make plants top-heavy and easily toppled with strong winds. Plant the seeds no more than 1 inch deep and 6 inches apart. Determining when sunflower seeds are ready for harvest can be tricky. You can plant sunflower seeds directly into the ground after the danger of Spring frost has passed and the soil is thoroughly warmed (soil temperature of 55 to 60 degrees F). You have to start with a variety of sunflower that can grow tall. Gently push the sunflower seed into the soil. While saving sunflower seeds as a snack or as bird feed is common, you can also save the seed for replanting the next year. This is the most important tip: genetics matter! The Best Time to Plant Sunflower Seeds. Plant seeds and then use a cultipacker to put them at the appropriate depth. Below is a photo collage of my mother showing us exactly how to plant a sunflower seed directly into the ground with her experienced gardening hands. If drilling, plant approximately 20 pounds per acre. Sunflower leaves, stems and seeds release substances that inhibit the growth of certain plants. Harvesting Sunflower Seeds. Conventional wisdom says that the seeds should be either direct seeded after danger of frost, or, in short season regions, started in pots a few weeks earlier, for later transplanting. Press down firmly. Sunflowers can be sown directly into the ground. Contact with the potential buyer of sunflower seed in your locality. The plant produces a large head of seeds that can be saved for planting the following season or … These toxins are harmless to people and eventually break down in soil. 1 Choose the Right Seed. Forget the dwarf varieties (which do great in containers), and look for types with words like giant, mammoth, kong, tall, monster, and so on in the either the seed name or description. A plant population around 50,000 to 75,000 plants per hectare is considered as the best suitable for producing maximum depending on the water availability and sunflower cultivar. Sunflowers (Helianthus annuus) grow up to 8 feet tall with some cultivars reaching heights of 15 feet. Don’t plant too thick, as too many plants will grow and competition will result in a lesser plot. Also, a proper seed treatment is to be carried out for better germination of sunflower seeds So, that you can achieve a good plant density. To ensure pure seed, grow your sunflowers at least 1/2 mile from any sunflowers grown by your neighbors. Also calculate post-harvesting cost like storage, bagging, etc. Always hoard a small number of the sunflower seeds that you’re setting out. Step 2 — Plant Sunflower Seeds. If broadcasting, plant about 25 pounds per acre. Sunflower Farming Business Plan. The sunflower (Helianthus annuus) grows well in U.S. Department of Agriculture plant hardiness zones 1 through 11. These annual plants are tall, with a height of 8 to 15 feet. Most sunflower varieties need 95-110 frost-free days to produce mature seeds, which means they can grow in zone 5 and warmer. That’s why grass may die beneath your sunflower birdfeeder. How to Plant Sunflowers: Place the sunflower seed in the ground. Once the flower opens, it’ll be a long time before everything has been pollinated and seeds fully develop. This is from mid-April to late May in the Northern United States. 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