How To Plant Cosmos From Seeds

I love having a cut flower garden and this year I am adding Cosmos to my cut garden beds. I have read that they are profuse annual bloomers that are perfect for the cottage garden. They are known as very easy flowers to grow from seed and will last long through the summer until the first frost.

How To Plant Cosmo Seeds | Rocky Hedge Farm

Cut and Come Again Flowers

When I began thinking about what seeds to plant for my cut flower garden this year, I looked for flowers that would continue to bloom all season long. I have planted Zinnias for several years, and I love that I can cut them, and then they will bloom again. Cosmos fall into that same category.

I don’t like to spend a lot of money on annuals because they only last one season, but one of the benefits of growing Cosmos is that you can save the seeds after they are finished blooming. You will then have seeds for the next season.

Planting Cosmos in a Galvanized Container | Rocky Hedge Farm

Planting Cosmos Seeds

I chose to plant a few cosmos seeds in this galvanized wash tub. We pulled the metal stand with the wheels off the property that we are currently cleaning off, and then at a later date, we found the washtub. I was so happy to see that the washtub fit perfectly on the metal frame.

I had been trying to decide what I wanted to plant in front of the Peonies that are just in front of the old white metal bed frame. Peonies only bloom in the Spring, and I needed something for the Summer and Fall. I love how this combination came together.

How to Plant Cosmos From Seeds | YouTube Video

Beginner Cut Flower Garden | Rocky Hedge Farm

How to Plant Cosmos From Seeds

Light: Cosmos prefer an area with a lot of sun.

Soil: Prepare an area that is rock free, and has good loose soil. Avoid using fertilizers that contain high amounts of nitrogen, this can cause foliage to develop faster than flower blooms.

Time: Sow seeds directly in the ground once all danger of frost has passed.

Spacing: I scattered my seeds on the soil and lightly covered them with dirt. Once the seeds begin to sprout, I will thin the seedlings out to 10-12 inches apart. This will give them plenty of air circulation and room to grow.

How to Grow Cosmos from Seed | Rocky Hedge Farm

White Cosmos Varieties

The first planting of Cosmos that I planted were a variety called, Afternoon White. In a few weeks, I will do another planting of Cosmos called Purity and Psyche White. This will give me an abundance of cut flowers all in a variety of white shades.

I look forward to having a houseful of blooms all summer long. Do you grow Cosmos? I would love to hear your tips and feel free to share your favorite varieties.

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How to Plant Cosmos | Rocky Hedge Farm
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Sarah Blankenship

Rocky Hedge Farm is a simple living blog sharing the journey of a family living in small town USA. A hang laundry on the line, cook from scratch kind of girl, living in a modular home that is being remodeled, Sarah writes about balancing life as a mother, wife, homemaker, and farm girl.

Located in rural Missouri, Sarah keeps the company of her husband, and four children. The days are filled with time spent in the garden, keeping house, working on DIY projects, checking on the bees, and spending time with her husband and their children.