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When to plant California Poppy in Barton County County,

Barton County County sits in USDA Zone 6b. Plant California Poppy between March 23 (after last frost on April 20) and April 13.

When to Plant California Poppy in Barton County, KS

Barton County, Kansas Zone 6b June

June in Barton County, Kansas — your action list

Here's what deserves your attention in Barton County, Kansas this month. Everything below is tailored to Zone 6b and timed around your local frost dates.

Avg. last frost April 20
Avg. first frost October 16
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 14.7 hrs
  1. It's harvest week for california poppy

    If you can't use it all right away, check the food-preservation section of your planner.

Coming up in July — start thinking about
  • First harvests: california poppy

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The California poppy (Eschscholzia californica) is the state flower of California and a drought-adapted cool-season annual. Cup-shaped blooms in vivid orange, yellow, red, and pink open in morning sun and close at night. It thrives in poor, well-drained soils, self-sows freely, and goes dormant once summer heat arrives. Ideal for naturalized wildflower meadows and xeriscaping projects.

Barton County, Kansas is in USDA Zone 6b. The average last spring frost is April 20 and the first fall frost is October 16, giving you a growing season of approximately 179 days.

At an elevation of 638 feet, Barton County receives approximately 25.9 inches of rainfall annually with predominantly loam soil. Summer highs average 90°F, providing good warmth for California Poppy during the growing season.

Annual Blooms in Spring Pollinator-friendly Deer-resistant
Barton County, KS (Zone 6b) Moderate season
179 days
Last Spring Frost April 20
179 growing days
First Fall Frost October 16
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Barton County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.3

Drainage

Well Drained

California Poppy Planting Risk Windows

Early Start (70% safe) ✓ Fits season (53 days to spare)
Transplant: Apr 14 🌸 Bloom: Jun 23 – Aug 18
Recommended (50%) ✓ Fits season (53 days to spare)
Transplant: Apr 20 🌸 Bloom: Jun 29 – Aug 24
Safe Start (90%) ✓ Fits season (53 days to spare)
Transplant: May 3 🌸 Bloom: Jul 12 – Sep 6

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 Barton County

How your county's soil matches California Poppy's growing requirements.

Soil pH

Your soil pH (6.5–7.3) is within California Poppy's preferred range (6.0–8.0).

Soil Texture

The loam soil in Barton County is excellent for California Poppy — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.9%). Annual compost additions will help California Poppy.

How to Plant California Poppy

0.1"
Planting Depth
6"
Between Plants
10"
Between Rows

Succession Planting California Poppy

3
successive plantings in your 179-day season

Sow every 6.9 weeks. Last sowing by Jul 18 to harvest before frost.

California Poppy Water Budget

Plant needs
0.5″/week
Rainfall provides
0.6″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for California Poppy

California Poppy needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month California Poppy Needs Rainfall You Supplement Action
Jan 0.7" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 1.5" 0" ❄️ Dormant
Apr 2.2" 2.7" 0" ✅ Rainfall sufficient
May 2.2" 4.3" 0" ✅ Rainfall sufficient
Jun 2.2" 3.9" 0" ✅ Rainfall sufficient
Jul 2.2" 3.1" 0" ✅ Rainfall sufficient
Aug 2.2" 3" 0" ✅ Rainfall sufficient
Sep 2.2" 2.8" 0" ✅ Rainfall sufficient
Oct 2.2" 1.6" 0.6" 💧 Light watering
Nov 0.9" 0" ❄️ Dormant
Dec 0.7" 0" ❄️ Dormant

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

California Poppy 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.

California Poppy needs ~1,312 GDD — county provides 3,132 GDD Excellent fit

California Poppy Planting Timeline — Barton County, KS

California Poppy Planting Calendar

Activity When Date Range
Direct Sow March 23 Mar 23 – Apr 13
Bloom June 1 Jun 1 – Jul 27

Plant 0.1" deep · 6" apart · Rows 10" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–8 · Your soil: ideal

🗺️ USDA Zone

Zone 6b

📆 Growing Season

179 days in Barton County

Growing Tips for California Poppy in Barton County

Direct sow California Poppy outdoors after April 20 in Barton County when soil has warmed and frost danger has passed.

General growing tips

Direct-sow only — the taproot cannot survive transplanting. In zones 6–7, scatter seeds in early spring as soon as soil is workable; seedlings tolerate light frost. In zones 8–10, fall-sow Oct–Dec for winter/early spring bloom. Simply scatter on bare, cultivated soil and press gently — seeds need light and soil contact but minimal cover. Thin to 6 inches. Avoid fertilizing; rich soil encourages foliage over flowers. Allow seed heads to mature and shatter for naturalized self-sowing colonies year after year.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant California Poppy in Barton County, KS?

Barton County is in Zone 6b with an average last frost of April 20. Plan your California Poppy planting based on this frost date — see the calendar above for exact timing.

What planting zone is Barton County, KS?

Barton County, Kansas is in USDA Hardiness Zone 6b. The average last spring frost is April 20 and first fall frost is October 16.

When should I plant California Poppy in Barton County County, ?

In Barton County County, , plant California Poppy after the last frost (around April 20) and before the first frost (around October 16). Best results when soil holds above 50°F.

What growing zone is Barton County County, for California Poppy?

Barton County County sits in USDA Zone 6b. California Poppy grows reliably in zones 6a through 10b, so it's a good fit here.

Can California Poppy grow in Barton County County's climate?

Yes — California Poppy grows well in Barton County County's temperate climate. Barton County County averages a 179-day frost-free season, with last frost around April 20 and first frost around October 16.

🌱

Your Barton County Garden Planner — Free

A 22-page printable planner built for Barton 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 Barton County, KS. 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.