How-to Guide
How to Grow Peonies
The short answer
Peonies are long-lived, low-fuss perennials if you get the basics right: plant them in fall (roughly September–October in most of the U.S.), give them at least 6 hours of full sun, and use deep, fertile, well-drained soil with a near-neutral pH. Once established they can bloom for decades with little intervention.
The number-one reason a healthy-looking peony grows lots of leaves but no flowers is planting depth. The 'eyes' (the pink-red buds on the root) should sit only 1 to 2 inches below the soil surface; buried 3–4 inches or deeper, the plant makes foliage but skips flowers. If yours won't bloom, check the depth first — deep mulch or settled soil can slowly bury the crown over time.
Planting for decades of bloom
Plant in fall so roots establish before growth resumes. Choose a full-sun spot (6+ hours) with rich, well-drained soil around neutral pH.
Space plants so air moves freely between them, which also helps prevent fungal problems like botrytis. For per-plant spacing, use the peony-spacing calculator to lay out a bed.
Why won't my peony bloom? Depth first
Set the eyes just 1 to 2 inches deep. Planting too deep is the classic cause of a peony that produces lush leaves and no flowers, because the plant diverts energy to foliage instead of flower buds.
Over the years, settling soil or piled-on mulch can bury the crown deeper than you originally planted it, so if an established peony stops blooming, this is the first thing to check. The fix is to lift and replant in fall at the correct depth.
Other reasons for no flowers
Too much shade, plants that are still too young or recently divided, and cutting the foliage back too early all reduce or prevent bloom.
Keep the leaves growing all season — they recharge the roots for next year — and cut the plant to near the ground only after frost. Don't remove foliage prematurely.
Sources
Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.
- Iowa State University Extension — Reasons Why Peonies Fail to Bloom — Planting too deep is a leading cause of failure to bloom; eyes should be 1–2 inches deep; too much shade, immaturity, and premature foliage removal also prevent flowering.
- University of Minnesota Extension — Growing peonies — Plant peonies in fall in full sun and well-drained soil with eyes 1–2 inches below the surface; retain foliage through the season for next year's bloom.