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When to Plant Sorrel in Santa Cruz County, AZ

Santa Cruz County, Arizona Zone 8b May

Santa Cruz County, Arizona gardeners: here's your May plan

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Santa Cruz County, Arizona.

Avg. last frost March 30
Avg. first frost November 7
Soil temp (4") 61°F
Watering Critical
Pest pressure High
Daylight 13.6 hrs
  1. Start sorrel indoors

    Bottom-water once the first true leaves appear — it keeps stems dry and knocks back damping-off.

  2. Harvest sorrel as they ripen

    Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.

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

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Sorrel is a perennial herb with tangy, lemon-flavored arrow-shaped leaves. It is one of the first greens to emerge in spring and is used in soups and salads.

Santa Cruz County, Arizona is in USDA Zone 8b. The average last spring frost is March 30 and the first fall frost is November 7, giving you a growing season of approximately 222 days.

At an elevation of 4,351 feet, Santa Cruz County receives approximately 8.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 100°F, so Sorrel may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Sorrel will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Sorrel successfully. Mulch heavily to conserve soil moisture.

Santa Cruz County, AZ (Zone 8b) Long season
222 days
Last Spring Frost March 30
222 growing days
First Fall Frost November 7

Santa Cruz County Soil Profile

Soil Type

Sandy Loam

Soil pH

6.7-8.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (125 days to spare)
Start indoors: Feb 14 Transplant: Mar 14 🍅 Harvest: Apr 25 – Jun 27
Recommended (50%) ✓ Fits season (124 days to spare)
Start indoors: Feb 23 Transplant: Mar 23 🍅 Harvest: May 4 – Jul 6
Safe Start (90%) ✓ Fits season (123 days to spare)
Start indoors: Mar 17 Transplant: Apr 14 🍅 Harvest: May 26 – Jul 28

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 Santa Cruz County

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

Soil pH

Your soil pH (6.7–8.3) is more alkaline than Sorrel prefers (5.5–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Drainage

Drainage is adequate for Sorrel.

Organic Matter

Organic matter is low (0.8%). Add 2-3 inches of compost before planting Sorrel.

How to Plant Sorrel

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Sorrel

6
successive plantings in your 222-day season

Sow every 4.6 weeks. Last sowing by Sep 08 to harvest before frost.

For a dedicated fall crop, sow by Aug 29.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.2″/week
You supply
1.4″/week
Watering frequency 2-3 times/week
Season total 2,719 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Sorrel

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

Month Sorrel Needs Rainfall You Supplement Action
Jan 0.5" 0" ❄️ Dormant
Feb 0.5" 0" ❄️ Dormant
Mar 4.3" 0.5" 3.8" 🚿 Regular watering
Apr 4.3" 0.3" 4" 🚿 Regular watering
May 4.3" 0.2" 4.1" 🚿 Regular watering
Jun 4.3" 0.3" 4" 🚿 Regular watering
Jul 4.3" 1.2" 3.1" 🚿 Regular watering
Aug 4.3" 1.7" 2.6" 🚿 Regular watering
Sep 4.3" 1.2" 3.1" 🚿 Regular watering
Oct 4.3" 0.7" 3.6" 🚿 Regular watering
Nov 4.3" 0.5" 3.8" 🚿 Regular watering
Dec 0.6" 0" ❄️ Dormant

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

Sorrel 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.

Sorrel needs ~1,250 GDD — county provides 5,550 GDD Excellent fit

Sorrel Planting Timeline — Santa Cruz County, AZ

Sorrel Planting Calendar

Activity When Date Range
Start Indoors February 23 Feb 23 – Mar 9
Transplant Outdoors March 23 Mar 23 – Apr 6
Direct Sow March 16 Mar 16 – Apr 6
Harvest May 4 May 4 – Jul 6
Fall Sowing August 29 Aug 29 – Sep 12

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · 2-3 times/week

📅 Days to Maturity

40–60 days

🧪 Soil pH

Needs 5.5–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8b

📆 Growing Season

222 days in Santa Cruz County

Growing Tips for Sorrel in Santa Cruz County

Direct sow Sorrel outdoors after March 30 in Santa Cruz County when soil has warmed and frost danger has passed.

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

With summer highs reaching 100°F in Santa Cruz County, provide afternoon shade for Sorrel and water deeply in the morning.

Your generous 222.0-day season in Santa Cruz County allows multiple plantings of Sorrel. Sow every 20.0 days for continuous harvest.

Santa Cruz County receives only 8" of rain annually. Sorrel needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Direct sow in early spring or fall. Remove flower stalks promptly to encourage leaf production. Divide clumps every 3-4 years. Young leaves have the best flavor.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Sorrel in Santa Cruz County, AZ?

Santa Cruz County is in Zone 8b with an average last frost of March 30. Plan your Sorrel planting based on this frost date — see the calendar above for exact timing.

What planting zone is Santa Cruz County, AZ?

Santa Cruz County, Arizona is in USDA Hardiness Zone 8b. The average last spring frost is March 30 and first fall frost is November 7.

🌱

Your Santa Cruz County Garden Planner — Free

A 24-page printable planner built for Santa Cruz County (Zone 8b). 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 Santa Cruz County, AZ. 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.