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When to Plant Crookneck Squash in Sierra County, NM

Sierra County, New Mexico Zone 8a May

Top priorities for Sierra County, New Mexico gardeners in May

Welcome to May in Zone 8a. These are the moves that will have the biggest impact on your growing season.

Avg. last frost April 15
Avg. first frost October 26
Soil temp (4") 55°F
Watering Critical
Pest pressure Moderate
Daylight 13.7 hrs
  1. Get crookneck squash seeds going inside

    Label every cell. You will absolutely forget which is which otherwise.

June will be here before you know it — start on
  • First harvests: crookneck squash

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Yellow crookneck squash is a summer squash with a curved neck and bumpy, bright yellow skin. It has a buttery flavor and is best harvested young when 4-6 inches long.

Sierra County, New Mexico is in USDA Zone 8a. The average last spring frost is April 15 and the first fall frost is October 26, giving you a growing season of approximately 194 days.

At an elevation of 4,898 feet, Sierra County receives approximately 17.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 88°F, providing good warmth for Crookneck Squash during the growing season. Sandy soil warms quickly in spring — great for early planting — but Crookneck Squash will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Crookneck Squash successfully. Mulch heavily to conserve soil moisture.

Sierra County, NM (Zone 8a) Moderate season
194 days
Last Spring Frost April 15
194 growing days
First Fall Frost October 26

Sierra County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.3-8.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (114 days to spare)
Start indoors: Mar 2 Transplant: Apr 13 🍅 Harvest: Jun 1 – Jun 29
Recommended (50%) ✓ Fits season (103 days to spare)
Start indoors: Mar 18 Transplant: Apr 29 🍅 Harvest: Jun 17 – Jul 15
Safe Start (90%) ✓ Fits season (108 days to spare)
Start indoors: Apr 6 Transplant: May 18 🍅 Harvest: Jul 6 – Aug 3

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 Sierra County

How your county's soil matches Crookneck Squash's growing requirements.

Soil pH

Your soil pH (7.3–8.5) is more alkaline than Crookneck Squash prefers (6.0–7.5). Add sulfur or peat moss to lower pH.

Soil Texture

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

Drainage

Drainage is adequate for Crookneck Squash.

Organic Matter

Organic matter is low (0.7%). Add 2-3 inches of compost before planting Crookneck Squash.

How to Plant Crookneck Squash

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Succession Planting Crookneck Squash

5
successive plantings in your 194-day season

Sow every 5.1 weeks. Last sowing by Aug 27 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.4″/week
You supply
1.1″/week
Watering frequency 2-3 times/week
Season total 1,913 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Crookneck Squash

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

Month Crookneck Squash Needs Rainfall You Supplement Action
Jan 1.4" 0" ❄️ Dormant
Feb 1" 0" ❄️ Dormant
Mar 1" 0" ❄️ Dormant
Apr 4.3" 0.6" 3.7" 🚿 Regular watering
May 4.3" 0.4" 3.9" 🚿 Regular watering
Jun 4.3" 0.5" 3.8" 🚿 Regular watering
Jul 4.3" 2.7" 1.6" 💧 Light watering
Aug 4.3" 3.3" 1" 💧 Light watering
Sep 4.3" 2.3" 2" 💧 Light watering
Oct 4.3" 1.7" 2.6" 🚿 Regular watering
Nov 1" 0" ❄️ Dormant
Dec 1.3" 0" ❄️ Dormant

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

Crookneck Squash 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.

Crookneck Squash needs ~840 GDD — county provides 3,104 GDD Excellent fit

Crookneck Squash Planting Timeline — Sierra County, NM

Crookneck Squash Planting Calendar

Activity When Date Range
Start Indoors March 18 Mar 18 – Apr 1
Transplant Outdoors April 29 Apr 29 – May 13
Direct Sow April 22 Apr 22 – May 13
Harvest June 17 Jun 17 – Jul 15

Plant 1" deep · 30" apart · Rows 42" apart

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors
April Start Indoors Transplant Outdoors Direct Sow
May Transplant Outdoors Direct Sow
June Harvest
July Harvest
August
September
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 2-3 times/week

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8a

📆 Growing Season

194 days in Sierra County

Growing Tips for Crookneck Squash in Sierra County

Direct sow Crookneck Squash outdoors after April 15 in Sierra County when soil has warmed and frost danger has passed.

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

Your generous 194.0-day season in Sierra County allows multiple plantings of Crookneck Squash. Sow every 22.0 days for continuous harvest.

Common pests for Crookneck Squash in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.

Sierra County receives only 17" of rain annually. Crookneck Squash needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Direct sow after last frost on mounds. Pick frequently while small for tender texture. Skin becomes tough and warty on larger fruits. Very productive in warm weather.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Crookneck Squash in Sierra County, NM?

Sierra County is in Zone 8a with an average last frost of April 15. Plan your Crookneck Squash planting based on this frost date — see the calendar above for exact timing.

What planting zone is Sierra County, NM?

Sierra County, New Mexico is in USDA Hardiness Zone 8a. The average last spring frost is April 15 and first fall frost is October 26.

🌱

Your Sierra County Garden Planner — Free

A 24-page printable planner built for Sierra County (Zone 8a). 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 Sierra County, NM. 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.