When to Plant Zucchini in Greenlee County, AZ
Zucchini is an incredibly prolific summer squash that can produce an abundance of fruit from just a few plants. It is versatile in the kitchen from grilling to baking.
Greenlee County, Arizona is in USDA Zone 7a. The average last spring frost is April 22 and the first fall frost is October 22, giving you a growing season of approximately 183 days.
At an elevation of 4,156 feet, Greenlee County receives approximately 14.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95°F, so Zucchini may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Zucchini will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Zucchini successfully. Mulch heavily to conserve soil moisture.
Greenlee County Soil Profile
Soil Type
Sandy Loam
Soil pH
7.1-8.3
Drainage
Well Drained
Plant Planting Risk Windows
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 Greenlee County
How your county's soil matches Zucchini's growing requirements.
Soil pH
Your soil pH (7.1–8.3) is more alkaline than Zucchini prefers (6.0–7.5). Add sulfur or peat moss to lower pH.
Soil Texture
Sandy soil in Greenlee County warms quickly in spring but drains fast. Zucchini will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Zucchini.
Organic Matter
Organic matter is low (0.9%). Add 2-3 inches of compost before planting Zucchini.
How to Plant Zucchini
Succession Planting Zucchini
Sow every 5.1 weeks. Last sowing by Aug 23 to harvest before frost.
Plant Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Zucchini
Zucchini needs approximately 1.2 inches of water per week (5.2" per month). Here's how your county's rainfall compares month by month.
| Month | Zucchini Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1" | 0" | ❄️ Dormant |
| Feb | — | 0.8" | 0" | ❄️ Dormant |
| Mar | — | 0.8" | 0" | ❄️ Dormant |
| Apr | 5.2" | 0.5" | 4.7" | 🚿 Regular watering |
| May | 5.2" | 0.4" | 4.8" | 🚿 Regular watering |
| Jun | 5.2" | 0.5" | 4.7" | 🚿 Regular watering |
| Jul | 5.2" | 2.7" | 2.5" | 💧 Light watering |
| Aug | 5.2" | 2.9" | 2.3" | 💧 Light watering |
| Sep | 5.2" | 1.7" | 3.5" | 🚿 Regular watering |
| Oct | 5.2" | 1.3" | 3.9" | 🚿 Regular watering |
| Nov | — | 0.9" | 0" | ❄️ Dormant |
| Dec | — | 1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Greenlee County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Zucchini 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.
Zucchini Planting Timeline — Greenlee County, AZ
Zucchini Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 25 | Mar 25 – Apr 8 |
| Transplant Outdoors | May 6 | May 6 – May 20 |
| Direct Sow | April 29 | Apr 29 – May 20 |
| Harvest | June 24 | Jun 24 – Aug 19 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1.2"/week · 2-3 times/week
📅 Days to Maturity
45–60 days
🧪 Soil pH
Needs 6–7.5 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 7a
📆 Growing Season
183 days in Greenlee County
Growing Tips for Zucchini in Greenlee County
Direct sow Zucchini outdoors after April 22 in Greenlee County when soil has warmed and frost danger has passed.
Sandy soil in Greenlee County dries quickly — mulch Zucchini with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
Your generous 183.0-day season in Greenlee County allows multiple plantings of Zucchini. Sow every 22.0 days for continuous harvest.
Common pests for Zucchini in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.
Greenlee County receives only 14" of rain annually. Zucchini needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.
General growing tips
Direct sow after last frost. Harvest when fruits are 6-8 inches long for best flavor and texture. Check plants daily in summer as fruits can double in size overnight.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Zucchini in Other Locations
Frequently Asked Questions
When should I plant Zucchini in Greenlee County, AZ?
Greenlee County is in Zone 7a with an average last frost of April 22. Plan your Zucchini planting based on this frost date — see the calendar above for exact timing.
What planting zone is Greenlee County, AZ?
Greenlee County, Arizona is in USDA Hardiness Zone 7a. The average last spring frost is April 22 and first fall frost is October 22.
Plan Your Garden with Confidence
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