PL. —Papaver rhoeasBotanical illustration — drop image
Papaver rhoeas

Shirley Poppy

SpringSummer
3a10bHardiness zone
Peak bloom windowZone 6b · frost-offset weeks
Winter
Not in bloom
Spring
Peak bloom
Summer
Not in bloom
Fall
Not in bloom
Peak bloom
In bloom
Background

Shirley poppies are fleeting and exquisite — the large, tissue-paper flowers in shades of white, pink, salmon, red, and bicolors flutter and drop petals quickly, but the effect in the garden and the vase is incomparable. Sow direct in autumn or as early in spring as the ground can be worked; they need cold to germinate and dislike transplanting entirely.

The trick with cutting poppies: harvest in bud, just as the sepals are splitting before the petals unfurl. Sear the cut end in a flame for 5 seconds immediately after cutting to seal the sap. This extends vase life from a single day (if cut open) to 3–5 days. Self-seeds prolifically and will colonise bare ground.

Care guide
SunFull sun
WaterLow; drought tolerant once established
SoilAverage to poor, well-draining
Spacing6–9 inches
Height18–24 inches
Zone3a – 10b
WinterAnnual — self-seeds freely.
Direct sowFrost hardy
Seasonal tasks
spring
cutHarvest in bud before petals unfurl; sear stem immediately in a flame
summer
watchAllow to self-seed for the following year — naturalises freely in bare soil
fall
sowSow direct in autumn or very early spring — needs cold, dislikes transplanting
Common problems

Aphids

Symptoms

Clusters of small soft insects on new growth and flower buds.

Treatment

Knock off with a strong jet of water. Ladybirds and lacewings are natural predators. Insecticidal soap as last resort.