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When to plant Peonies in Baca County County,

Plant Peonies in Baca County County during the brief April 26–May 10 window. With 182 frost-free days, fall plantings can't mature before October 18.

When to Plant Peonies in Baca County, CO

Baca County, Colorado Zone 6b June

Baca County, Colorado gardeners: here's your June plan

If you only do a handful of things in the garden this June, make it these. They're sequenced around your zone's frost timing.

Avg. last frost April 19
Avg. first frost October 18
Soil temp (4") 61°F
Watering Critical
Pest pressure High
Daylight 14.6 hrs
  1. Start harvesting peonies

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

Looking ahead to July
  • First harvests: peonies

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Peonies (Paeonia lactiflora) are the crown jewels of the spring garden — magnificent, fragrant blooms in white, pink, and red that can last 100 years or more in the same spot with minimal care. Extremely cold-hardy and requiring a period of winter chill to bloom, they are most productive in Zones 3–7. Each established clump produces dozens of lush, fully double or semi-double flowers over a 2–3 week window in late spring. Virtually pest-free beyond the cosmetic presence of ants on buds (which are harmless). Once sited correctly, peonies rarely need dividing or moving.

Baca County, Colorado is in USDA Zone 6b. The average last spring frost is April 19 and the first fall frost is October 18, giving you a growing season of approximately 182 days.

At an elevation of 4,958 feet, Baca County receives approximately 12.3 inches of rainfall annually with predominantly loam soil. Summer highs average 90°F, providing good warmth for Peonies during the growing season. With low rainfall, drip irrigation is essential for growing Peonies successfully. Mulch heavily to conserve soil moisture.

Perennial Blooms in Spring Pollinator-friendly Deer-resistant Good for cutting Fragrant
Baca County, CO (Zone 6b) Moderate season
182 days
Last Spring Frost April 19
182 growing days
First Fall Frost October 18
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Baca County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.9

Drainage

Well Drained

Peonies Planting Risk Windows

Early Start (70% safe) ✓ Fits season (77 days to spare)
Transplant: Apr 21 🌸 Bloom: Jun 23 – Jul 28
Recommended (50%) ✓ Fits season (77 days to spare)
Transplant: Apr 26 🌸 Bloom: Jun 28 – Aug 2
Safe Start (90%) ✓ Fits season (78 days to spare)
Transplant: May 11 🌸 Bloom: Jul 13 – Aug 17

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Soil Compatibility in Baca County

How your county's soil matches Peonies's growing requirements.

Soil pH

Your soil pH (6.3–7.9) is more alkaline than Peonies prefers (6.5–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

The loam soil in Baca County is excellent for Peonies — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Peonies.

How to Plant Peonies

1.5"
Planting Depth
36"
Between Plants
48"
Between Rows

Peonies Water Budget

Plant needs
1.0″/week
Rainfall provides
0.3″/week
You supply
0.9″/week
Watering frequency 2-3 times/week
Season total 1,392 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Peonies

Peonies needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Peonies Needs Rainfall You Supplement Action
Jan 0.8" 0" ❄️ Dormant
Feb 0.7" 0" ❄️ Dormant
Mar 1" 0" ❄️ Dormant
Apr 4.3" 1.3" 3" 🚿 Regular watering
May 4.3" 1.4" 2.9" 🚿 Regular watering
Jun 4.3" 1" 3.3" 🚿 Regular watering
Jul 4.3" 1" 3.3" 🚿 Regular watering
Aug 4.3" 1.2" 3.1" 🚿 Regular watering
Sep 4.3" 1.1" 3.2" 🚿 Regular watering
Oct 4.3" 1.1" 3.2" 🚿 Regular watering
Nov 0.8" 0" ❄️ Dormant
Dec 0.7" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Baca County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Peonies Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Peonies needs ~1,838 GDD — county provides 3,185 GDD Excellent fit

Peonies Planting Timeline — Baca County, CO

Peonies Planting Calendar

Activity When Date Range
Transplant Outdoors April 26 Apr 26 – May 10
Bloom June 28 Jun 28 – Aug 2

Plant 1.5" deep · 36" apart · Rows 48" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April Transplant Outdoors
May Transplant Outdoors
June Bloom
July Bloom
August Bloom
September
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 2-3 times/week

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6.5–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 6b

📆 Growing Season

182 days in Baca County

Growing Tips for Peonies in Baca County

Direct sow Peonies outdoors after April 19 in Baca County when soil has warmed and frost danger has passed.

Baca County receives only 12" of rain annually. Peonies needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Plant bare-root divisions in fall (late September through October in Zones 3–7; November in Zone 8) with eyes facing upward and positioned exactly 1–2 inches below soil surface — deeper planting is the most common reason peonies fail to bloom. Choose a site with full sun and excellent drainage. Peonies require 6+ weeks of temperatures below 40°F (cold stratification period) for reliable bloom — they do not perform well in Zone 9+. Do not expect full bloom the first or second year; Year 3+ plants deliver the most impressive flowering. Avoid moving established plants. Stake double- flowered types before heavy blooms cause stems to flop. Cut stems to ground in fall after frost kills foliage to prevent botrytis overwinter.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Peonies in Baca County, CO?

Baca County is in Zone 6b with an average last frost of April 19. Plan your Peonies planting based on this frost date — see the calendar above for exact timing.

What planting zone is Baca County, CO?

Baca County, Colorado is in USDA Hardiness Zone 6b. The average last spring frost is April 19 and first fall frost is October 18.

When should I plant Peonies in Baca County County, ?

In Baca County County, , plant Peonies after the last frost (around April 19) and before the first frost (around October 18). Best results when soil holds above 50°F.

What growing zone is Baca County County, for Peonies?

Baca County County sits in USDA Zone 6b. Peonies grows reliably in zones 3a through 8b, so it's a good fit here.

Can Peonies grow in Baca County County's climate?

Yes — Peonies grows well in Baca County County's temperate climate. Baca County County averages a 182-day frost-free season, with last frost around April 19 and first frost around October 18.

🌱

Your Baca County Garden Planner — Free

A 22-page printable planner built for Baca County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Baca County, CO. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.