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When to Plant Crosne in Nemaha County, KS

Nemaha County, Kansas Zone 5b April

This month in Nemaha County, Kansas

A quick April briefing for Nemaha County, Kansas gardeners — what's urgent, what's next, and what can wait.

Avg. last frost April 23
Avg. first frost October 10
Soil temp (4") 46°F
Watering High
Pest pressure Low
Daylight 13.1 hrs
  1. Direct-sow crosne

    Keep the top inch of soil moist until germination — a gentle morning watering for 5–7 days does the job.

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Crosne (Chinese artichoke) produces small, segmented white tubers with a crunchy texture and mild artichoke-nutty flavor. They are a rare delicacy in French cuisine.

Nemaha County, Kansas is in USDA Zone 5b. The average last spring frost is April 23 and the first fall frost is October 10, giving you a growing season of approximately 170 days.

At an elevation of 665 feet, Nemaha County receives approximately 21.7 inches of rainfall annually with predominantly loam soil. Summer highs average 85°F, providing good warmth for Crosne during the growing season.

Nemaha County, KS (Zone 5b) Moderate season
170 days
Last Spring Frost April 23
170 growing days
First Fall Frost October 10

Nemaha County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (3 days to spare)
Transplant: Apr 17 🍅 Harvest: Sep 18 – Oct 2
Recommended (50%) ✓ Fits season (2 days to spare)
Transplant: Apr 23 🍅 Harvest: Sep 24 – Oct 8
Safe Start (90%) ✗ May not fit
Transplant: May 11 🍅 Harvest: Oct 12 – Oct 26

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 Nemaha County

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

Soil pH

Your soil pH (6.6–7.4) overlaps with Crosne's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.3%). Annual compost additions will help Crosne.

How to Plant Crosne

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.5″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 842 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Crosne

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

Month Crosne Needs Rainfall You Supplement Action
Jan 0.6" 0" ❄️ Dormant
Feb 0.7" 0" ❄️ Dormant
Mar 1.5" 0" ❄️ Dormant
Apr 4.3" 2.3" 2" 💧 Light watering
May 4.3" 3.2" 1.1" 💧 Light watering
Jun 4.3" 3.4" 0.9" 💧 Light watering
Jul 4.3" 3.1" 1.2" 💧 Light watering
Aug 4.3" 2.3" 2" 💧 Light watering
Sep 4.3" 2.2" 2.1" 💧 Light watering
Oct 4.3" 1.2" 3.1" 🚿 Regular watering
Nov 0.8" 0" ❄️ Dormant
Dec 0.6" 0" ❄️ Dormant

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

Crosne 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.

Crosne needs ~2,406 GDD — county provides 2,337 GDD Tight fit

Crosne Planting Timeline — Nemaha County, KS

Crosne Planting Calendar

Activity When Date Range
Direct Sow April 9 Apr 9 – Apr 30
Harvest September 10 Sep 10 – Sep 24
Fall Sowing August 1 Aug 1 – Aug 15

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April Direct Sow
May
June
July
August Fall Sowing
September Harvest
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

150–200 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 5b

📆 Growing Season

170 days in Nemaha County

Growing Tips for Crosne in Nemaha County

Direct sow Crosne outdoors after April 23 in Nemaha County when soil has warmed and frost danger has passed.

Your 170.0-day growing season in Nemaha County is tight for Crosne (150.0-200.0 days to maturity). Start indoors and choose early-maturing varieties.

Nemaha County receives only 22" of rain annually. Crosne needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Plant tubers 3 inches deep in spring. Mark the location well as plants die back. Harvest in late fall after frost. Leave some tubers in ground for next year. Very labor-intensive to harvest.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Crosne in Nemaha County, KS?

Nemaha County is in Zone 5b with an average last frost of April 23. Plan your Crosne planting based on this frost date — see the calendar above for exact timing.

What planting zone is Nemaha County, KS?

Nemaha County, Kansas is in USDA Hardiness Zone 5b. The average last spring frost is April 23 and first fall frost is October 10.

🌱

Your Nemaha County Garden Planner — Free

A 24-page printable planner built for Nemaha County (Zone 5b). 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 Nemaha County, KS. Local conditions may vary. Last updated: April 2026.

Sources & credits

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