How to Grow Goldenrod for Fall Color

Updated on August 27, 2018
OldRoses profile image

Caren White is a Master Gardener and instructor at Home Gardeners School. She has been a volunteer at Rutgers Gardens for over a decade.

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Goldenrod should be one of the classic flowers of fall but it gets a bad rap because it blooms at the same time that hayfever sufferers begin sneezing. Ragweed flowers, which are the real culprits, are tiny so it is the showy goldenrod that gets blamed for the suffering. Ragweed pollen is spread by the wind. Billions of tiny pollen particles are released into the air in search of flowers to pollinate. Goldenrod, on the other hand, has larger, sticky pollen that adheres to visiting insects that fly on to pollinate other goldenrod flowers. The only way to get a noseful of goldenrod pollen is to actually stick your nose into the flowers. Ironically, it is florists who suffer from goldenrod allergies because they handle the pollen-filled flowers indoors when creating fall arrangements. The stiff stems of the goldenrod make them ideal for flower arrangements.

Ragweed flowers are smaller and less conspicuous than goldenrod flowers.
Ragweed flowers are smaller and less conspicuous than goldenrod flowers. | Source

History

Goldenrod has an interesting history thanks to the intrepid British plant collectors and breeders. A native wildflower that still blooms in our meadows, it was sent to England where there was intense interest in the native plants of the New World by English gardeners. English plant breeders converted the plant from an invasive weed to a more mannerly garden flower with showier flowers and varying heights which lends it versatility in the garden. English gardeners eagerly embraced these new exotic plants in their gardens.

These “new” plants were then transported back to North America where they are now sold in nurseries and catalogs. Because of the deep-seated bias against goldenrod, it did not become popular here in the US until the 1980s. Prior to that, it was only used in wildflower gardening.

Fun Facts about Goldenrod

It is the state flower of Kentucky and Nebraska

It is the state wildflower of South Carolina

It is the state herb of Delaware

What Is Goldenrod?

Goldenrod is a perennial that is native to North America. The domesticated plants are hardy in growing zones 4 through 9. The wildflowers have a wider range and are hardy from growing zone 2 in Canada to zone 8 in the southern US. They both prefer full-sun but will tolerate some shade. Both the wild and domesticated plants are drought tolerant, making them excellent candidates for xeriscapes. In your garden, they require well-drained soil. The new cultivars range in height from 1 to 3 feet depending on the variety. The wildflowers are taller and range in height from 4 to 5 feet. Regardless of height, all bloom in the fall. The flowers attract both beneficial insects and butterflies. After the plants die back in the fall, you should cut them down to the ground and remove the dead plant material from your garden to prevent insects and disease from overwintering in the debris.

Goldenrod flowers attract bees and other beneficial insects.
Goldenrod flowers attract bees and other beneficial insects. | Source

How To Grow Goldenrod From Seed

Growing goldenrod from seed is easy. You can start it indoors 6 to 8 weeks before your last frost date or outdoors in either the spring or the fall. In the spring, sow the seeds after your last frost. No matter when or where you are starting your seeds, be sure to surface sow them. Don't cover them with soil. They need sunlight to germinate. Keep the seeds moist until germination. Germination should occur in 2 to 3 weeks. Be patient. Perennial seeds always take much longer to germinate than annuals.

If you have sown your seeds outdoors in the fall, do not expect them to germinate until the following spring when the increasing amount of sunlight tells them that it is time to grow. Don't worry about keeping them moist. Mother Nature will take care of that for you. And don't worry about the seeds dying during the cold winter. In the wild, the plants bloom in the fall and produce seeds that will lay dormant on the soil until the following spring.

Seedlings that were started indoors can be hardened off and planted outdoors after your last frost. Hardening off is the name of the process of acclimating your plants to the outdoors. Instead of just taking them outdoors and immediately planting them in your garden, you want to allow them to gradully adjust to being outdoors with the varying temperature, wind and strong sunlight. Put your seedlings outdoors for a few hours a day, increasing the amount of time each day that they spend outside until they are outdoors all day. Then you can plant them in your garden.

Other Ways To Propagate Goldenrod

Perennials like goldenrod should be divided every 3 to 4 years to keep the plants healthy. For fall bloomers like goldenrod, division is done in the spring. If you know a gardener who has some in their garden and they are dividing their plants, you can ask them for one of their divisions.

Goldenrod also spreads underground via runners known as underground rhizomes. That's why you see it popping up at a distance from your existing plants. You can sever that runner and transplant the resulting plant to another location or share with fellow gardeners.

This habit of spreading via runners contributes to the plant becoming invasive in your garden. Even the more mannerly domesticated varieties spread rapidly so you might want to treat them like you treat bamboo and surround them with a 3 feet deep barrier to keep them under control.

A word of warning

Don’t be tempted to dig up some wild goldenrod and transplant it into your garden. These wildflowers are aggressive spreaders and will crowd out domesticated garden plants. They are accustomed to fighting for space with agressive weeds. Your tender domesticated flowers are no match for them.

Questions & Answers

    © 2014 Caren White

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      • OldRoses profile imageAUTHOR

        Caren White 

        3 years ago from Franklin Park, NJ

        Ruby, I'm sorry to hear that you don't have enough sun for this "sunny" golden flower! Thanks for reading and commenting.

      • Ruby H Rose profile image

        Maree Michael Martin 

        3 years ago from Northwest Washington on an Island

        Such a beautiful flower. Not sunny enough to grow here. Great information.

      • OldRoses profile imageAUTHOR

        Caren White 

        3 years ago from Franklin Park, NJ

        Rebecca, I'm so glad to find another goldenrod lover. Thank you for reading and commenting.

      • OldRoses profile imageAUTHOR

        Caren White 

        3 years ago from Franklin Park, NJ

        Jackie, I didn't know that they are edible. I'll have to look into that. Thank you for bringing it to my attention and for reading and commenting.

      • rebeccamealey profile image

        Rebecca Mealey 

        3 years ago from Northeastern Georgia, USA

        I love goldenrod. Thanks for giving it the Okay!

      • Jackie Lynnley profile image

        Jackie Lynnley 

        3 years ago from The Beautiful South

        I love these and wouldn't care if they did take over! lol

        I read somewhere here at HP that they are also edible! ?

      • OldRoses profile imageAUTHOR

        Caren White 

        4 years ago from Franklin Park, NJ

        In the past, goldenrod has been used to heal wounds. Thank you for reading and commenting.

      • ologsinquito profile image

        ologsinquito 

        4 years ago from USA

        Goldenrod does evoke the colors of fall. Even though it can cause allergies, I wonder if there are also some good or medicinal uses. Maybe one of our resident herbalists has an answer.

      • OldRoses profile imageAUTHOR

        Caren White 

        4 years ago from Franklin Park, NJ

        Elsie, your tree must be gorgeous! I'm so envious that it is spring in NZ. Spring is my favorite season. Thank you for reading and commenting.

      • Elsie Hagley profile image

        Elsie Hagley 

        4 years ago from New Zealand

        It's a nice color for Autumn. It's spring here in NZ and that is the color of my Kowhai tree now, and the Tui (bird) is fighting every bird that come near it.

        You mention Ragwort at the beginning of your article, our farm when we brought it in 1968 was covered with it and nearly fifty years later still having to spray every year, so that was a nice warning about the Goldenrod, nice to know.

      • OldRoses profile imageAUTHOR

        Caren White 

        4 years ago from Franklin Park, NJ

        I love the color too, Wiccan Sage. It adds so much to the brilliant colors of fall. Thank you for reading and commenting.

      • WiccanSage profile image

        Mackenzie Sage Wright 

        4 years ago

        I love goldenrod, the color is so beautiful-- especially for this time of year. Great hub, thanks for sharing.

      • OldRoses profile imageAUTHOR

        Caren White 

        4 years ago from Franklin Park, NJ

        Good decision, Pawpaw. I planted these in my garden and they tried to take over. Thank you for reading and commenting.

      • Pawpawwrites profile image

        Jim 

        4 years ago from Kansas

        I wasn't aware of it being the state flower of Kentucky and Nebraska. I guess I don't need them in the garden, if they are that aggressive.

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