How Far Apart to Plant Peonies

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GardenSays

Your 8×4 ft garden plot fits 2 peonies at 39-inch spacing.

Between plants: 39 in
Rows: 1 @ 39 in
Total plants: 2

Peonies need 39-39 inches between plants, in rows 39-39 inches apart so you can walk between them. At the 39-inch midpoint, that's 2 per row and 1 rows — 2 plants.

Calculated result · 1 verified source · Checked 2026-07-18 · How we decide

The link reopens this exact calculation.

Why

Crowding is the most common spacing mistake: closer planting doesn't add yield, it adds shade, disease pressure, and small fruit. When in doubt, use the wider end of the range.

Air circulation between mature plants is the cheapest disease prevention there is.
Roots spread wider than the plant looks in June — spacing is set for August size.

When this doesn't apply

Compact peonies can take the tight end of the range; large or vigorous ones want the wide end.
Square-foot gardening compresses further than these numbers — it trades yield per plant for yield per bed and needs diligent feeding.

How this was calculated

1. In-row spacing39 in
Peony: 39-39 inches between plants (extension guidance); midpoint used
2. Row layout2/row × 1 rows
Rows 39-39 inches apart (midpoint 39 in) so you can walk and harvest: 96÷39 per row, 48÷39 rows
3. Total2 plants
2 × 1

Data sources

Royal Horticultural Society — Herbaceous and intersectional peonies growing guide — Space plants about 1m (3.25 ft) apart depending on ultimate height and spread. (checked 2026-07-18)

What changes this answer

Layout

Bed length (ft)

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Bed width (ft)