How to Grow Poppies, a Cottage Garden Favorite

Updated on January 19, 2020
OldRoses profile image

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

Oriental Poppy
Oriental Poppy | Source

A popular late spring/early summer flower is the poppy. Or I should say poppies. They come in three different varieties.

What are Poppies?

The oriental poppy (Papaver orientale) is a perennial most often seen in old-fashioned gardens. The plants are large with hairy leaves. They appear in the spring, growing until mid-summer when they burst into bloom. When they have finished blooming, the foliage dies leaving an empty space in your garden until the following spring. It’s best to plant perennials around your oriental poppies to mask that empty space. Most older gardens sport oriental poppies with orange blossoms but newer cultivars have white, salmon, red or purple flowers.

Corn Poppy
Corn Poppy | Source

The field or corn poppy (Papaver rhoeas) is an annual and is the symbol of Veteran’s Day (US) or Remembrance Day (Europe). Before the advent of modern herbicides, field poppies were a common weed. It was said that when the shelling stopped at the end of WWI, the fields were covered with red poppies because the soil had been churned up and long buried seeds germinated. Their red flowers appear in late spring.

Shirley Poppy
Shirley Poppy | Source

P. rhoeas was hybridized by an English clergyman, Rev. William Wilkes, into the popular Shirley poppies which sport blooms in scarlet, purple, pink and white. The scarlet, purple and pink flowers have delicate white edges.

Opium Poppy
Opium Poppy | Source

The opium poppy (Papaver somniferum) is the source of opium but also the delicious seeds used in baking. It is an annual plant with gray-green foliage and white, lavender or red flowers that appear in early summer. The opium is contained in the sap in the seed pods that appear after the flowers have finished. It is legal in the US to grow opium poppies but illegal to harvest the opium from them. You are free to harvest the seeds to either save for next year or use in your favorite recipes.

How to Grow Poppies

Poppies originated in the the Mediterranean area, a dry environment. They require full sun and well-rained soil. You will have to be careful to not overwater them. They prefer to be dry which is why they grow so well in areas like the Mideast. Their tall stems are fragile, so it is best to grow them in an area where they are protected from strong gusts of wind. If you grow them away from protection, be sure to stake them.

How to Grow Poppies From Seed

No matter what kind of poppies you choose, they are easy to grow from seed. Choose a sunny spot in your garden and surface sow the seeds. They need light to germinate. You can sow the seeds in the late fall or early spring before your last frost. They need a period of cold to germinate. You can even sprinkle the seeds on top of the snow in the winter and when it melts in the spring, the seeds will germinate when they come into contact with the soil. It’s best to sow your seeds where you want your plants to grow because they do not transplant well.

The seeds are tiny so they can be difficult to sow. A good solution is to mix your seeds with sand at a rate of one part seed to two parts sand. Spread the sand over the area where you want the seeds to grow. This will allow you to sow them more evenly.

Keep the seeded area moist. You can expect germination within 2 weeks if your soil is at least 55⁰F. Thin your seedlings when they are one inch high so that the resulting plants will be 6 to 10 inches apart.

If you want to start your seeds indoors, you will need to cold stratify them. Cold stratification is a techniquie used to mimic cold weather for seeds that require cold temperatures to germinate. Eight weeks before your last frost, surface sow your poppy seeds in a container and cover it with a plastic bag. The plastic bag will keep the soil moist while the container is in the refrigerator. Place the bagged container in your refrigerator for 4 weeks. Then take it out of your refrigerator and place it in a sunny window. Germination should occur within 2 weeks. you can plant your seedlings, 6 to 10 inches apart in your garden after your last frost.

How to Harvest Poppy Seeds

After your poppies have finished blooming, you can remove the seed pod before the seeds form or if you wish to harvest to seeds, leave the pods on the plants until they turn brown. They will be ready when you hear the seeds rattling around inside. Gather the pods in a paper bag with slits cut into it for air circulation to finish drying. When completely dry, the seeds will begin to spill out of the pods through holes along the top edge. To remove all of the seeds, simply pop the top of the pod.

Since poppies grow so well from seed, you might want to leave some pods on the plants to spread their seeds in your garden for next year.

Questions & Answers

  • What is some information about lettuce leaf poppies?

    Lettuce leaf poppies are the opium poppies (Papaver somniferum) mentioned in my article. They are annual poppies. Their seeds are often used in baking as in poppy seed bagels or muffins. If you are subject to drug testing, do not eat anything made with poppy seeds. The seeds contain minute amounts of opium and will show up on a drug test. It is legal in the US to grow opium poppies. It is illegal in the US to harvest the opium from them.

© 2017 Caren White


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    • OldRoses profile imageAUTHOR

      Caren White 

      3 years ago

      Himalayan blue poppies are very difficult to grow. Kudoes to you if you are successful. Thanks for readng and commenting.

    • eugbug profile image

      Eugene Brennan 

      3 years ago from Ireland

      I had about 30 oriental poppy plants growing in various parts of my garden for several years. These are very easy to grow from seed. However last year every single one of them died. First they turned yellow in the spring last year and then wasted away. I still haven't figured out the cause, but I have a theory that the very wet autumn/winter we had here in late 2015 may have been responsible.

      The opium poppies look nice! Must try growing them. Himalayan blue poppies are also stunning.

      Thanks for sharing!

    • Kristen Howe profile image

      Kristen Howe 

      3 years ago from Northeast Ohio

      What a great hub on growing poppies. They're beautiful and colorful at the same time. I would love to have my container plant of them for my patio this summer. Thanks for sharing.

    • OldRoses profile imageAUTHOR

      Caren White 

      3 years ago

      Viet, glad it brought such wonderful memories.

      Heidi, you're welcome. Happy you enjoyed it.

    • heidithorne profile image

      Heidi Thorne 

      3 years ago from Chicago Area

      How pretty! Thanks for sharing with us.

    • punacoast profile image

      Viet Doan 

      3 years ago from Big Island, Hawaii

      Lovely article! It brings back fond memories of my years living in northern Michigan. Every spring the open fields in Leelanau peninsula are filled with colorful Shirley poppies. Thanks!


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