How to Start a Zinnia & Cosmos Cut Flower Garden in 5 Easy Steps - (2024)

How to Start a Zinnia & Cosmos Cut Flower Garden in 5 Easy Steps - (1)

This will be my third year growing a cut flower garden in our backyard! I am no gardening professional, so I fully believe you can successfully do exactly what I’m doing. A single planting of these flowers will produce about 3 months of blooming backyard flowers, which I use in arrangements for our home and give away to friends. This post is intended to be super simple and not overwhelming, so keep in mind there is SO much more to learn!

To help you get started, I’ve broken it down to 5 easy steps, and added some links to additional resources and products at the end of this post.

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It’s important to note that I’m located in Middle TN (Zone 7b), so planting information will vary by zone!

If you’re wanting to dig in more, I highly recommend the book Floret Farms Cut Flower Garden. It is worth the money. Not only is it full of information, but it also doubles as a beautiful coffee table book!

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1. Determine Where You Will Plant Your Cut Flower Garden

To make things simple, the flowers I recommend starting with are zinnias and cosmos, which are two of the easiest cut flowers to grow. These are both prolific bloomers that continually bloom from roughly July through September.

First, you need to determine a spot with full sun where you are going to plant your flowers in order to know how many seeds to order.

You only need a couple of feet to grow flowers. You’re supposed to plant these seeds roughly 9-12 inches apart from one another, but I normally squeeze them in tighter.

This year, I’m planting mine in our raised garden beds, and in our mulched landscaping beds around the house. The first year I planted seeds, I cleared out the grass from around our chicken coop, bought a bag of gardening soil to spread on top of the dirt, and planted them there. If you don’t have a preexisting landscaping bed, clear out grass & add some soil like I did to create an impromptu bed.

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2. Order Your Seeds

Now for the fun part! Figure out which varieties of zinnias & cosmos you want to order! I always order mine online. They are SO much better than the seed packets I grabbed at Kroger one year. Floret’s zinnia varieties are by far my favorite. Her seeds typically go for sale at the beginning of February and sell out quick. Johnny’s Seeds also has beautiful cosmos and zinnia varieties.

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3. Patiently Wait to Plant

Once you have your seeds, I direct plant them into the soil once it warms up. Both of these flowers resent cold weather, so you need to wait to plant them once it has warmed up. Patience is KEY! The rule of thumb that I follow for where I live (Middle TN) is to plant your seeds after Mother’s Day.

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4. Water & Watch Them Grow!

Once your seeds are planted, begin to water them daily. You should begin to be able to see them sprout in 3-5 days. (Confession: there are many days I forget to water and these flowers are very forgiving!)

Both of these flowers benefit from “pinching” which leads to more abundant flower production and longer stems. This means that when your plants are young and 8-12 inches tall, take sharp pruners and cut the top 3-4 inches off the plant, just above the first set of leaves. This makes the plant send up extra stems from where you cut. However, if this scares you as a beginner, no need to worry. I’ve had beautiful blooms the past 3 years without doing this.

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5. Cut the Flowers & Create Bouquets!

You should begin to see blooms within 3 months of planting the seeds. Once they start blooming, be sure to harvest & bring them into your home or give to others! They are called “Cut and Come Again” flowers, because the more you cut, the more will grow! Be sure to cut each bloom at a set of leaves, so a new shoot will start where you cut from. If you aren’t harvesting, be sure to cut off the dead blooms so they plant can use that energy to create new blooms.

When you’re creating bouquets, get creative with what you already have in your yard. Adding just a few extra clippings of different plants to your zinnias and cosmos really jazzes up a bouquet! It’s my goal to slowly add more perennials to our yard (plants that come back every year), so I have a plethora of flowers to choose from when creating bouquets. I currently have Annabelle Hydrangeas, a climbing rose bush, ferns, Daisies, a Butterfly Bush, mint, and more that I love to use! I may need to create a blog post on my favorite landscaping plants to use in arrangements. You can also purchase flowers at Kroger to fill in-I usually love their clearance flowers!

Like I said earlier, this just barely dips your toes in the water when it comes to flower gardening. There is SO much more to learn! I’ve included some of my favorite resources below, as well as some products you may need.

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Favorite Cut Flower Garden Resources

  1. Floret Farm’s Cut Flower Garden Book– I already mentioned this above. It’s my favorite learning tool for flowers.
  2. Floret Farm’s Blog Post on Zinnias
  3. Floret Farm’s Blog Post on Cosmos
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Favorite Cut Flower Garden Products

  1. My favorite hand pruners for clipping flowers
  2. Wide Mouth Plastic Watering Can (I love plastic so it won’t rust!)
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Other Product Ideas

  1. Labels for Marking Types of Seeds
  2. Gardening Tool Set
  3. Gardening Gloves
  4. Heritage Blue Stripe Stoneware Pitcher for Farmhouse Flower Arrangements
  5. Whimsical Garden Lights

If you have any additional questions once you’re done reading, feel free to reach out to me on Instagram or Facebook, or in the comments below. I’m sure you aren’t the only one with the question you have, and I’d love to answer to the best of my ability. Happy gardening!

Daisy Sue

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How to Start a Zinnia & Cosmos Cut Flower Garden in 5 Easy Steps - (2024)

FAQs

How to Start a Zinnia & Cosmos Cut Flower Garden in 5 Easy Steps -? ›

In this all-pink combination, the daisy-like flowers of pale pink cosmos are enhanced by magenta zinnias. Discover eight essential border daisies to grow.

Can I plant zinnias and cosmos together? ›

In this all-pink combination, the daisy-like flowers of pale pink cosmos are enhanced by magenta zinnias. Discover eight essential border daisies to grow.

How to layout a flower garden for beginners? ›

Beginner Cut Flower Garden Layouts

For beginners, simplicity and manageable size are key. Consider starting with a rectangular or square-shaped garden bed, which is easier to manage than more complex designs. Choose a mix of easy-to-grow annuals like zinnias, sunflowers, and marigolds.

How far apart to plant zinnias for cut flowers? ›

For cut flower use, Zinnias can be grown anywhere from 6-12” apart.

What flower pairs well with zinnias? ›

Marigolds are one of the classic companions for zinnias. They help deter pests such as nematodes and repel aphids, whiteflies, and other harmful insects. Marigolds also attract beneficial insects like ladybugs and lacewings, which prey on garden pests.

Do zinnias like to be crowded? ›

Tips for planting and caring for zinnias:

For healthy growth and plenty of air flow to the stems, thin plants to be about 6″ apart and space rows 10-12″ apart. If zinnias are too crowded, they will still grow but the blooms will be much smaller.

What happens if you plant zinnias too close together? ›

If zinnias are planted too closely together they will produce tall plants and much smaller flowers. Always follow the recommended spacing on the planting instructions.

How do you layout a garden for beginners? ›

As a general rule, put tall veggies toward the back of the bed, mid-sized ones in the middle, and smaller plants in the front or as a border. Consider adding pollinator plants to attract beneficial insects that can not only help you get a better harvest, but will also prey on garden pests.

How to plan a cut flower bed? ›

Give your cutting garden a sunny spot with well-drained soil. Prepare the planting area, making sure it is loose and weed-less. If possible, take time to work in compost and all-purpose organic fertilizer. The most efficient way to set up a cutting garden is to grow your flowers in rows, as you would vegetables.

How to make zinnias bushy? ›

The secret to getting the longest stems from your zinnias is pinching them when they are young. Here's how it's done: When plants are between 8 to 12 in (20 to 30 cm) tall, take sharp pruners and snip the top 3 to 4 in (8 to 10 cm) off the plant, just above a set of leaves.

How much room do zinnias need? ›

Sow and Plant

Thin to 12 inches (30 cm) apart in all directions for dwarf varieties. Zinnia varieties that grow more than 24 inches (60) cm) tall require 18 inches (45 cm) between plants. Our Garden Planner can produce a personalized calendar of when to sow, plant and harvest for your area.

What animals do zinnias attract? ›

Many butterflies are attracted to Zinnias' colorful blooms and will feed on the easy-to-access nectar. What to look for: Butterflies are most drawn to taller Zinnia varieties with a clear yellow center, which is the source of nectar that feeds pollinators like butterflies and bees.

What do zinnias love? ›

Choose a bright and sunny spot for your zinnias. Cover zinnia seeds with just ¼ inch of soil because they need light to germinate. Keep soil moist as the flowers develop.

What grows well with cosmos? ›

Cosmos: Favorite Companion Plants and Garden Design Advice

Plant alongside zinnia, pansies or Johnny Jump –ups for a burst of bright color in the front of a border or rock garden. The Sonata series is bred to be shorter and sturdier, and is therefore ideal for pots or smaller gardens, and is especially decorative.

What do you plant with cosmos? ›

Cosmos: Favorite Companion Plants and Garden Design Advice

Plant alongside zinnia, pansies or Johnny Jump –ups for a burst of bright color in the front of a border or rock garden.

Can I just scatter zinnia seeds? ›

Even the planting process is easy. I put down fresh mulch, then sprinkle the Zinnia seeds where I want them. I don't worry about spacing or anything, I just scatter them. When the seeds are down, I sprinkle just a little more mulch over the area for cover.

How much space do you need between zinnias? ›

Sow and Plant

Poke seeds into the soil about one-half inch (1 cm) deep and 3 inches (8 cm) apart. Thin to 12 inches (30 cm) apart in all directions for dwarf varieties. Zinnia varieties that grow more than 24 inches (60) cm) tall require 18 inches (45 cm) between plants.

What is the best support for zinnias? ›

Support them.

If you are growing a full bed of zinnias, the easiest way to give them support is to put some netting up while they are still small. They will grow up through it and be secure from wind and rain and their own weight.

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