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When to Plant Crosne in La Salle County, TX

La Salle County, Texas Zone 9a May

This month in La Salle County, Texas

Your garden in La Salle County, Texas is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost February 14
Avg. first frost December 3
Soil temp (4") 67°F
Watering Low
Pest pressure High
Daylight 13.4 hrs
Coming up in June — start thinking about
  • First harvests: crosne

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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.

La Salle County, Texas is in USDA Zone 9a. The average last spring frost is February 14 and the first fall frost is December 3, giving you a growing season of approximately 292 days.

At an elevation of 2,270 feet, La Salle County receives approximately 57.2 inches of rainfall annually with predominantly loam soil. Summer highs average 92°F, providing good warmth for Crosne during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Crosne root diseases.

La Salle County, TX (Zone 9a) Year-round
292 days
Last Spring Frost February 14
292 growing days
First Fall Frost December 3

La Salle County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (83 days to spare)
Transplant: Jan 30 🍅 Harvest: Jul 3 – Sep 4
Recommended (50%) ✓ Fits season (75 days to spare)
Transplant: Feb 14 🍅 Harvest: Jul 18 – Sep 19
Safe Start (90%) ✓ Fits season (64 days to spare)
Transplant: Mar 14 🍅 Harvest: Aug 15 – Oct 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 La Salle County

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

Soil pH

Your soil pH (6.5–7.6) is more alkaline than Crosne prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Drainage

Drainage is adequate for Crosne.

Organic Matter

Organic matter is moderate (2.0%). Annual compost additions will help Crosne.

How to Plant Crosne

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

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 1,252 gal / 100 sq ft

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 1.5" 0" ❄️ Dormant
Feb 4.3" 2" 2.3" 🚿 Regular watering
Mar 4.3" 3.4" 0.9" 💧 Light watering
Apr 4.3" 5.5" 0" ✅ Rainfall sufficient
May 4.3" 7.4" 0" ✅ Rainfall sufficient
Jun 4.3" 10.2" 0" ✅ Rainfall sufficient
Jul 4.3" 7.3" 0" ✅ Rainfall sufficient
Aug 4.3" 7" 0" ✅ Rainfall sufficient
Sep 4.3" 5.8" 0" ✅ Rainfall sufficient
Oct 4.3" 3.6" 0.7" 💧 Light watering
Nov 4.3" 2" 2.3" 🚿 Regular watering
Dec 4.3" 1.6" 2.7" 🚿 Regular watering

Water needs are for active growing months only (Feb–Dec in La Salle 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 ~3,325 GDD — county provides 5,567 GDD Excellent fit

Crosne Planting Timeline — La Salle County, TX

Crosne Planting Calendar

Activity When Date Range
Direct Sow January 24 Jan 24 – Feb 14
Harvest June 27 Jun 27 – Aug 29
Fall Sowing October 8 Oct 8 – Oct 22

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

Month-by-Month Timeline

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

🗺️ USDA Zone

Zone 9a

📆 Growing Season

292 days in La Salle County

Growing Tips for Crosne in La Salle County

Direct sow Crosne outdoors after February 14 in La Salle County when soil has warmed and frost danger has passed.

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 La Salle County, TX?

La Salle County is in Zone 9a with an average last frost of February 14. Plan your Crosne planting based on this frost date — see the calendar above for exact timing.

What planting zone is La Salle County, TX?

La Salle County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 14 and first fall frost is December 3.

🌱

Your La Salle County Garden Planner — Free

A 24-page printable planner built for La Salle County (Zone 9a). 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 La Salle County, TX. Local conditions may vary. Last updated: May 2026.

Sources & credits

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