How to Grow Red Shirley Poppy
Wikimedia Commons
Red Shirley Poppy
Papaver rhoeas 'Red Shirley'
flowerRed Shirley is a cultivar of the common poppy featuring delicate, ruffled petals in shades of red, pink, and white with dark centers. These cottage garden favorites grow 24-30 inches tall and produce papery, tissue-like flowers that bloom prolifically throughout spring and early summer. They are beloved for their romantic appearance and ability to self-seed year after year.
Looking for a specific variety?
When should you plant Red Shirley Poppy in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Red Shirley Poppy timeline · Pittsburgh, PA (Zone 6b)
-
Plant Red Shirley Poppy
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
First Red Shirley Poppy blooms
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Red Shirley Poppy dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-8; prefers cooler regions
Sign up free to see if Red Shirley Poppy grows in your zone — and get a personalized planting timeline.
Get my Red Shirley Poppy timeline →Growth Stages
Germination & Seedling
2-3 weeksSeeds germinate in 10-14 days. Seedlings develop thin, feathery foliage with a delicate appearance.
Do not cover seeds; provide consistent moisture and cool temperatures (50-60°F ideal). Keep soil surface moist but avoid waterlogging.
Vegetative Growth
3-4 weeksPlant develops a bushy mound of finely-divided, blue-green foliage 8-12 inches tall without flowering yet.
Thin seedlings to 6-inch spacing once established. Minimal fertilizer needed; these poppies prefer lean soil. Stake if grown in windy locations.
Budding & Flowering
6-8 weeksTall stems elongate to 24-30 inches, with large buds forming. Flowers begin opening; petals are delicate and papery with ruffled edges.
Deadhead spent flowers regularly to encourage continuous blooming. Support tall stems with stakes or grow through netting if needed. Provide moderate water.
Peak Bloom & Self-Seeding
4-6 weeksPlant reaches maximum flower production. As flowers fade, seed pods develop and mature to tan-brown color.
Allow some flowers to remain on plant if you want self-seeding. Deadhead the rest for extended blooming. Seeds mature in seed pods; let pods dry on plant before collecting.
Senescence & Decline
2-4 weeksAs temperatures rise in mid-to-late summer, flowering slows and plant begins to decline, especially in warm climates.
Cut plant back after frost or when growth ceases. In mild climates, may have second bloom in fall if watered and cooled. Allow seed pods to fully mature before removal.
Common Pests
-
Spray with water to dislodge; use insecticidal soap if severe. Encourage ladybugs and lacewings.
-
Improve air circulation; avoid overhead watering. Apply sulfur dust or baking soda spray (1 tbsp per gallon water) at first sign.
-
Ensure excellent drainage; reduce watering frequency. Remove affected plants. Improve soil drainage before replanting.
-
and
Remove by hand in early morning; use copper barriers or diatomaceous earth around plants.
Uses
Edible petals & flower garnish
CulinaryRed Shirley petals are edible and add delicate flavor and vibrant color to salads, desserts, and beverages. The petals have a subtle, slightly sweet flavor. [source]
Traditional herbal remedy
MedicinalPoppy flowers have been used in traditional medicine for mild sedative and anti-inflammatory properties, often brewed into teas or tinctures. [source]
Cut flowers & floral arrangements
CraftThe delicate, ruffled petals and long stems make Red Shirley poppies ideal for cottage garden bouquets, wedding arrangements, and dried flower crafts. [source]
Pollinator support
WildlifePoppies attract bees, hoverflies, and other beneficial insects, supporting pollinator populations in gardens. [source]
Symbolic gardening & folklore
HouseholdRed poppies symbolize pleasure and are iconic in literature and art. They self-seed reliably, creating a naturalized cottage garden aesthetic that requires minimal intervention. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Pick flowers in early morning when petals are fully open but still crisp for longest vase life. Cut just above a leaf node to encourage branching. For seed collection, allow pods to dry and turn brown on the plant (late summer), then cut entire stem and hang upside down in a paper bag to catch seeds. Seeds remain viable 2-3 years.
Fun Facts
- 🌱 Red Shirley poppies were developed in the late 1800s by Rev. William Wilks through careful selection of single and semi-double flowers from wild corn poppies, creating the modern ornamental cultivars we grow today.
- 🌱 Poppy seeds are completely legal and safe to eat; they contain no narcotic alkaloids (unlike opium poppies). The tiny seeds are used in baking and cuisine worldwide.
- 🌱 These poppies will self-seed abundantly and can 'volunteer' in gardens for years if allowed to mature seed pods, sometimes creating naturalized drifts that return each spring without replanting.
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized Red Shirley Poppy planting timeline
Tell us your zip code and we'll calculate exactly when to start Red Shirley Poppy seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my Red Shirley Poppy timeline →