PREMIER SEEDS DIRECT Giant Sunflower - Mongolian Giant - 30 Seeds

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I like to brush off all of the center disc florets from the face of the flowerhead right there in the garden. This can be a messy business, and it’s great to leave the mess in the garden. Place covers over germinating sunflower seeds and keep them protected until they are several inches tall at least. Options for protecting the seeds and seedlings include fine wire cloches, dollar store mesh waste baskets, or lightweight frost cloths. Besides choosing super seeds, proven to grow big and/or tall, fertilizer is key to maximizing the height.

Growing the tallest sunflower plants starts with choosing a variety that has tall genetics. For extra-tall plants, you’ll need seeds that want to grow tall and then growing conditions that allow them to. Here are some popular tall sunflower varieties: 1. Mammoth sunflower Personally, I am very cautious with fertilizers because of the environmental repercussions, so do your homework first. I avoid synthetic fertilizers and choose organic, slow-release amendments with care. Earth Walker (1.8-2.7m): A mixture in a range of bronze, yellow and chocolate-brown shades. Widely available.A larger variety of branching sunflower is the ‘Italian White.’ The plant grows to between five and seven feet in height, producing four-inch flowers on the multiple branches, with cream-colored petals with dark centers. They require full sun and should be planted in early spring. They’ll take 90 to 110 days or so to bloom, but once they do, loads of pollinators will come calling. Soraya Sunflower Harvest the heads when the bracts begin to shrivel, and hang the flowers upside down in a barn or shed At the end of the growing season, you will likely want to harvest your mammoth sunflower seed heads for seed collection. Providing the right planting location and care for your mammoth sunflowers will result in best growth, blooming, and seed production. Growing Zones

Once you’ve sown your sunflower seeds, you can cover the area with white garden netting (white is better as it lets more light in), a low tunnel or, in a pinch, a plastic bottle cut in half and placed above every individual seed as a dome. Once the seeds have germinated, you can remove the netting. Plant these beauties after all danger of frost has passed, in open, exposed ground. When the plants hit about four inches in height, thin them out. Provide them with lots of water. Russian Mammoth Plant the seeds of Dwarf Incredibles about 3 weeks before the last frost of the year for outdoor growing and any time for indoor (again, this is still best done in spring for a more natural life cycle for the plants). Suntastic Yellow Ideally you would plant the seeds spacing them approximately six inches apart, and then after they have sprouted, thin the plants to the ideal spacing of 18 inches to 24 inches apart.Seeds are ready to be harvested once the sunflower seed head is mature, which is approximately 120 days from planting. early growth one month after planting mammoth sunflower seeds mammoth grey striped sunflower beginning to open mammoth grey striped sunflower fully open with a missing ray petal, 3 months after planting nodding heads of mammoth grey striped sunflowers, nodding with the weight of the flower heads, 2 weeks after full bloom mammoth grey striped sunflower head at maturity Mammoth Sunflower Care Each stem is unique, and has it’s own agenda. Blooming time is an approximation, in ideal conditions. When you’re planting a tall sunflower variety, you should take into account its expected maximum height and the expected size of the bloom. That’s because a lot of the tall varieties have been bred for height, but not necessarily for sturdiness. A crowded out sunflower reaching for the sun. I’m holding a 10 foot 2×2 next to the stalk in the picture below. As you can see, the sunflower is more than ten feet tall. A plant that grows from seed to over ten feet tall in one year is very impressive. The 2×2 pictured is 10 feet tall. The Mongolian Giant Sunflower is taller. A closer view of the Mongolian Giant Sunflowers.