Double Mixed Shirley Poppies have 2 inch double blooms in pink/white, orange/white, red/pink, and red/white, rose, pink, and red colors. Blooming when the days are still cool and most other annual plants are weeks away from flowering. If sown successively the bloom can be extended through the summer. Poppies naturalize readily, are easy to grow, and reach 18 to 36 in. tall. Perennial One of favorite poppies to grow.
Sow seeds directly into a finely grated soil full sun. To help space these small seeds, it’s helpful to mix them with dry sand or place them in a salt shaker before sowing. Cover very lightly with fine soil and keep seed bed moist as seedlings emerge over 10 to 21 days.
Great for attracting pollinators like bumble bees and honeybees.
Planting in Late Summer
If you can, sow Shirley poppy seeds in late summer, as poppies grow best when they have a period of cold to germinate. Planting in August or September helps produce more vigorous plants with more blooms than those planting in spring. Seeds sown at this time produce flowers in May or June. Late summer sowing is recommended in planting locations with light or well-drained soil. Sowing seeds in clayey or heavy soils in late summer can lead to seedling loss, unless you dig the site and add compost and sand to make the soil crumbly.
When you plant Shirley poppies, they do best directly sowed outdoors. These plants do not tolerate transplanting well. In the spring, scatter seeds over the prepared growing area and thin out seedlings unit the plants left are about six to eight inches apart. When you take the time to thin seedlings, pick off spent blooms and seed pods, it will promote more blooms. Seeds sown in spring produce blooms in early summer.
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