Blog

When to plant Corn in Pine, AZ

Corn planted in Pine between February 20 and March 13 matures in 60–100 days — well before the December 5 first frost.

When to Plant Corn in Pine, AZ

Corn
Gila County, Arizona Zone 9a July

Your July planting checklist for Gila County, Arizona

Your garden in Gila County, Arizona is working on a schedule, even when you're not. Here's where you should be this July.

Avg. last frost February 13
Avg. first frost December 5
Soil temp (4") 76°F
Watering High
Pest pressure High
Daylight 14 hrs

Instant PDF download. No spam, unsubscribe any time.

Corn is a warm-season grass grown for its sweet ears, which are best eaten soon after harvest. It is wind-pollinated and must be planted in blocks for good kernel fill.

Pine, Arizona is in USDA Zone 9a. The average last spring frost is February 13 and the first fall frost is December 5, giving you a growing season of approximately 295 days.

At an elevation of 3,643 feet, Gila County receives approximately 9.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 94°F, providing good warmth for Corn during the growing season. Sandy soil warms quickly in spring — great for early planting — but Corn will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Corn successfully. Mulch heavily to conserve soil moisture.

Pine, AZ (Zone 9a) Year-round
295 days
Last Spring Frost February 13
295 growing days
First Fall Frost December 5

Pine Soil Profile

Soil Type

Sandy Loam

Soil pH

6.7-8.4

Drainage

Well Drained

Corn Planting Risk Windows

Early Start (70% safe) ✓ Fits season (178 days to spare)
Transplant: Feb 3 🍅 Harvest: Apr 7 – Jun 2
Recommended (50%) ✓ Fits season (176 days to spare)
Transplant: Feb 13 🍅 Harvest: Apr 17 – Jun 12
Safe Start (90%) ✓ Fits season (157 days to spare)
Transplant: Mar 24 🍅 Harvest: May 26 – Jul 21

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 Pine

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

Soil pH

Your soil pH (6.7–8.4) is more alkaline than Corn prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Drainage

Drainage is adequate for Corn.

Organic Matter

Organic matter is low (0.9%). Add 2-3 inches of compost before planting Corn.

How to Plant Corn

1"
Planting Depth
12"
Between Plants
36"
Between Rows

Succession Planting Corn

5
successive plantings in your 295-day season

Sow every 6.9 weeks. Last sowing by Aug 27 to harvest before frost.

Corn Water Budget

Plant needs
1.5″/week
Rainfall provides
0.1″/week
You supply
2.2″/week
Watering frequency 2-3 times/week
Season total 5,747 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Corn

Corn needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Corn Needs Rainfall You Supplement Action
Jan 0.6" 0" ❄️ Dormant
Feb 6.5" 0.6" 5.9" 🚿 Regular watering
Mar 6.5" 0.5" 6" 🚿 Regular watering
Apr 6.5" 0.3" 6.2" 🚿 Regular watering
May 6.5" 0.2" 6.3" 🚿 Regular watering
Jun 6.5" 0.3" 6.2" 🚿 Regular watering
Jul 6.5" 1.5" 5" 🚿 Regular watering
Aug 6.5" 1.8" 4.7" 🚿 Regular watering
Sep 6.5" 1.5" 5" 🚿 Regular watering
Oct 6.5" 0.9" 5.6" 🚿 Regular watering
Nov 6.5" 0.5" 6" 🚿 Regular watering
Dec 6.5" 0.7" 5.8" 🚿 Regular watering

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

Corn 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.

Corn needs ~1,640 GDD — county provides 6,068 GDD Excellent fit

Corn Planting Timeline — Pine, AZ

Corn Planting Calendar

Activity When Date Range
Direct Sow February 20 Feb 20 – Mar 13
Harvest April 24 Apr 24 – Jun 19

Plant 1" deep · 12" apart · Rows 36" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · 2-3 times/week

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 9a

📆 Growing Season

295 days in Gila County

Growing Tips for Corn in Pine

Direct sow Corn outdoors after February 13 in Gila County when soil has warmed and frost danger has passed.

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

Common pests for Corn in this region include corn earworm and corn borers. Use row covers early in the season and inspect plants weekly.

Gila County receives only 9" of rain annually. Corn needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Plant in blocks of at least 4 rows rather than single rows for proper pollination. Direct sow after soil reaches 60F. Side-dress with nitrogen when plants are knee-high.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Celery

Check more plant combinations with our Companion Planting Checker →

When should I plant Corn in Pine, AZ?

In Pine, AZ, plant Corn after the last frost (around February 13) and before the first frost (around December 5). Best results when soil holds above 50°F.

What growing zone is Pine, AZ for Corn?

Pine sits in USDA Zone 9a. Corn grows reliably in zones 3a through 11b, so it's a good fit here.

Can Corn grow in Pine's climate?

Yes — Corn grows well in Pine's temperate climate. Pine averages a 296-day frost-free season, with last frost around February 13 and first frost around December 5.

🌱

Your Gila County Garden Planner — Free

A 22-page printable planner built for Gila 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.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Gila County, AZ. Local conditions may vary. Last updated: July 2026.