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When to Plant Crosne in Jasper County, TX

Jasper County, Texas Zone 9a May

What to do in May

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

Avg. last frost March 3
Avg. first frost November 22
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.6 hrs

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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.

Jasper County, Texas is in USDA Zone 9a. The average last spring frost is March 3 and the first fall frost is November 22, giving you a growing season of approximately 264 days.

At an elevation of 97 feet, Jasper County receives approximately 71.8 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 97°F, so Crosne may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Crosne will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Crosne root diseases.

Jasper County, TX (Zone 9a) Long season
264 days
Last Spring Frost March 3
264 growing days
First Fall Frost November 22
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Jasper County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.3-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (53 days to spare)
Transplant: Feb 17 🍅 Harvest: Jul 21 – Sep 22
Recommended (50%) ✓ Fits season (47 days to spare)
Transplant: Mar 3 🍅 Harvest: Aug 4 – Oct 6
Safe Start (90%) ✓ Fits season (42 days to spare)
Transplant: Mar 28 🍅 Harvest: Aug 29 – Oct 31

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 Jasper County

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

Soil pH

Your soil pH (5.3–6.5) is more acidic than Crosne prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Jasper County warms quickly in spring but drains fast. Crosne will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is low (1.7%). Add 2-3 inches of compost before planting 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
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 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 1.6" 0" ❄️ Dormant
Feb 2.7" 0" ❄️ Dormant
Mar 4.3" 4.2" 0.1" 💧 Light watering
Apr 4.3" 7.3" 0" ✅ Rainfall sufficient
May 4.3" 10.8" 0" ✅ Rainfall sufficient
Jun 4.3" 12.7" 0" ✅ Rainfall sufficient
Jul 4.3" 7.8" 0" ✅ Rainfall sufficient
Aug 4.3" 8.4" 0" ✅ Rainfall sufficient
Sep 4.3" 7.2" 0" ✅ Rainfall sufficient
Oct 4.3" 4.9" 0" ✅ Rainfall sufficient
Nov 4.3" 2.3" 2" 💧 Light watering
Dec 1.8" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Jasper 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 ~3,981 GDD — county provides 6,006 GDD Excellent fit

Crosne Planting Timeline — Jasper County, TX

Crosne Planting Calendar

Activity When Date Range
Direct Sow February 10 Feb 10 – Mar 3
Harvest July 14 Jul 14 – Sep 15
Fall Sowing September 27 Sep 27 – Oct 11

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

150–200 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

264 days in Jasper County

Growing Tips for Crosne in Jasper County

Direct sow Crosne outdoors after March 03 in Jasper County when soil has warmed and frost danger has passed.

Sandy soil in Jasper County dries quickly — mulch Crosne with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 97°F in Jasper County, provide afternoon shade for Crosne and water deeply in the morning.

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 Jasper County, TX?

Jasper County is in Zone 9a with an average last frost of March 3. Plan your Crosne planting based on this frost date — see the calendar above for exact timing.

What planting zone is Jasper County, TX?

Jasper County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is March 3 and first fall frost is November 22.

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Your Jasper County Garden Planner — Free

A 24-page printable planner built for Jasper 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 Jasper 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.