RECOMMENDED USDA GROWING ZONES: 3–10
1. Choose the right location
Choose a location with full sun and well-drained soil. Mixed Corn Poppies are well suited to garden beds, borders, cottage gardens, wildflower plantings, and other open areas where their colorful flowers have room to develop.
Corn Poppies are cool-season annuals and generally perform best when they can establish and flower before intense summer heat arrives. In regions with hot summers, early planting is particularly important. In milder climates, fall sowing can provide an extended period of cool growing weather before spring flowering.
2. Prepare the soil
Remove weeds and debris and lightly loosen the soil surface to create a fine, even seedbed. Corn Poppy seeds are extremely small, so good contact between the seeds and soil is important.
These poppies adapt to a range of soil types as long as drainage is good. Avoid waterlogged locations and excessive fertilizer. Rich, heavily fertilized soil can encourage excessive leafy growth rather than abundant flowering.
3. Sow the seeds directly outdoors
Sow Mixed Corn Poppy seeds directly where you want the plants to grow. Poppies develop sensitive root systems and generally perform best when they are not transplanted after becoming established.
Scatter the seeds thinly and evenly across the prepared soil. Because the seeds are so small, mixing them with a small amount of fine, dry sand before sowing can make even distribution easier.
Press the seeds gently into the soil surface and do not bury them deeply. Leave them exposed or cover them with no more than approximately 1/8 inch of fine soil.
In cold-winter climates, sow in very early spring as soon as the soil can be worked, or sow in late fall to allow the seeds to experience natural winter conditions. In mild-winter climates, fall sowing is often an excellent choice for spring flowers.
4. Water and thin the seedlings
After sowing, water gently to avoid washing the tiny seeds away. Keep the upper layer of soil lightly and consistently moist during germination, but avoid saturating it.
Once seedlings are established, thin crowded plants to approximately 6–8 inches apart. Proper spacing gives the plants room to branch and flower while improving airflow through the planting.
As the plants mature, reduce watering frequency. Established Corn Poppies can tolerate relatively dry conditions, but supplemental water can be helpful during extended periods without rainfall. Avoid keeping the roots continually wet.
5. Enjoy the flowers and manage reseeding
Mixed Corn Poppies generally flower from late spring into early summer, depending on climate and planting time. The mixture can produce delicate flowers in multiple shades and color combinations, creating a more varied display than the traditional scarlet Red Flanders Poppy.
Individual flowers are relatively short-lived, but healthy plants continue developing new buds during their flowering period. Successive sowings can also help extend the display.
After flowering, rounded seed capsules develop. To encourage natural reseeding, allow some capsules to mature and release their seeds. Corn Poppies readily self-sow where growing conditions are favorable and can return in subsequent seasons from naturally dispersed seed.
If you want to limit reseeding, remove spent flowers or developing seed capsules before the seeds mature.
Growing Mixed Corn Poppies in containers:
Choose a container with drainage holes and fill it with a well-drained potting mix. Sow seeds directly into their final container to minimize root disturbance. Place the container in full sun, keep the surface gently moist while seeds germinate, and thin crowded seedlings as they develop.
Safety:
Mixed Corn Poppies are grown as ornamental flowers and should not be treated as an edible crop. Do not consume the plants or assume ornamental poppies can be used in the same manner as culinary poppy varieties. Keep plant material away from children and pets who may ingest it.
