How to Plant Mammoth Sunflower Seeds

Mammoth sunflowers are a popular type of sunflower that can grow up to 12 feet tall, with large yellow flowers that can measure up to 16 inches in diameter. They are great for adding height and beauty to any garden, and are also a fun plant to grow with kids. Here's how to plant mammoth sunflower seeds:

Preparing the Soil

The first step in planting mammoth sunflower seeds is to prepare the soil. Mammoth sunflowers like soil that is rich in organic matter, and that drains well. Before planting, amend the soil with compost or aged manure, and mix it in well. Remove any rocks or debris, and rake the soil smooth.

Planting the Seeds

Once the soil is prepared, it's time to plant the seeds. Plant mammoth sunflower seeds in the spring, once the soil has warmed up and all danger of frost has passed. Make a hole in the soil that is about 1 inch deep, and drop in the seed. Cover the seed with soil, and water gently. Space the seeds about 2 feet apart.

Watering and Fertilizing

After planting the seeds, it's important to water them regularly. Mammoth sunflowers like moist soil, but not soil that is waterlogged or soggy. Water deeply once a week, or more often if the weather is hot and dry.

You can also fertilize the plants with a balanced fertilizer once a month. Choose a fertilizer that is high in nitrogen, which will help the plants grow tall and strong. Be careful not to over-fertilize, as this can lead to too much foliage and not enough flowers.

Supporting the Plants

As the mammoth sunflowers grow taller, they may need support to keep from falling over. You can stake individual plants with tall bamboo stakes, or you can create a trellis or support system for multiple plants. Be sure to tie the plants gently to the support, using soft plant ties or twine.

Harvesting the Seeds

Once the mammoth sunflowers have finished blooming, you can harvest the seeds to use for planting next year, or for snacking on. Cut the heads off the plants when the flowers have died back, and hang them upside down in a dry, airy place to dry out.

Once the heads are dry, you can remove the seeds by rubbing them gently between your hands. Store the seeds in an airtight container in a cool, dry place until you're ready to plant them.

In conclusion, mammoth sunflowers are an easy and fun plant to grow, and with the right preparation and care, you can enjoy beautiful, towering sunflowers all season long. Just remember to prepare the soil, plant the seeds, water and fertilize regularly, support the plants as needed, and harvest the seeds when the time comes. Happy planting!