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When to Plant Artichoke in Grady County, OK

Grady County, Oklahoma Zone 7b August

This month in Grady County, Oklahoma

Welcome to August in Zone 7b. These are the moves that will have the biggest impact on your growing season.

Avg. last frost April 2
Avg. first frost November 5
Soil temp (4") 86°F
Watering Moderate
Pest pressure High
Daylight 13.3 hrs
  1. Basket week: artichoke

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

Coming up in September — start thinking about
  • First harvests: artichoke

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Globe artichokes are large thistle-like perennials prized for their edible flower buds. They produce striking silvery foliage and can be grown as ornamentals.

Grady County, Oklahoma is in USDA Zone 7b. The average last spring frost is April 2 and the first fall frost is November 5, giving you a growing season of approximately 217 days.

At an elevation of 599 feet, Grady County receives approximately 29.8 inches of rainfall annually with predominantly loam soil. Summer highs average 89°F, providing good warmth for Artichoke during the growing season.

Grady County, OK (Zone 7b) Long season
217 days
Last Spring Frost April 2
217 growing days
First Fall Frost November 5

Grady County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.2

Drainage

Well Drained

Artichoke Planting Risk Windows

Early Start (70% safe) ✓ Fits season (12 days to spare)
Transplant: Apr 4 🍅 Harvest: Aug 8 – Oct 17
Recommended (50%) ✓ Fits season (7 days to spare)
Transplant: Apr 16 🍅 Harvest: Aug 20 – Oct 29
Safe Start (90%) ✓ Fits season (10 days to spare)
Transplant: Apr 29 🍅 Harvest: Sep 2 – Nov 11

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 Grady County

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

Soil pH

Your soil pH (6.2–7.2) overlaps with Artichoke's range (6.5–8.0), though not a perfect match.

Soil Texture

The loam soil in Grady County is excellent for Artichoke — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.5%). Annual compost additions will help Artichoke.

How to Plant Artichoke

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

Artichoke Water Budget

Plant needs
1.0″/week
Rainfall provides
0.6″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 981 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Artichoke

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

Month Artichoke Needs Rainfall You Supplement Action
Jan 0.6" 0" ❄️ Dormant
Feb 1" 0" ❄️ Dormant
Mar 2" 0" ❄️ Dormant
Apr 4.3" 2.8" 1.5" 💧 Light watering
May 4.3" 4.9" 0" ✅ Rainfall sufficient
Jun 4.3" 4.3" 0" ✅ Rainfall sufficient
Jul 4.3" 4.2" 0.1" 💧 Light watering
Aug 4.3" 3.2" 1.1" 💧 Light watering
Sep 4.3" 2.8" 1.5" 💧 Light watering
Oct 4.3" 2.1" 2.2" 🚿 Regular watering
Nov 4.3" 1.1" 3.2" 🚿 Regular watering
Dec 0.7" 0" ❄️ Dormant

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

Artichoke 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.

Artichoke needs ~2,512 GDD — county provides 3,634 GDD Excellent fit

Artichoke Planting Timeline — Grady County, OK

Artichoke Planting Calendar

Activity When Date Range
Transplant Outdoors April 16 Apr 16 – Apr 30
Harvest August 20 Aug 20 – Oct 29

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

120–180 days

🧪 Soil pH

Needs 6.5–8 · Your soil: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

217 days in Grady County

Growing Tips for Artichoke in Grady County

Direct sow Artichoke outdoors after April 02 in Grady County when soil has warmed and frost danger has passed.

Common pests for Artichoke in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 8-10 weeks before last frost. Provide consistent moisture and mulch heavily. Harvest buds before scales begin to open for best flavor.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Artichoke in Grady County, OK?

Grady County is in Zone 7b with an average last frost of April 2. Plan your Artichoke planting based on this frost date — see the calendar above for exact timing.

What planting zone is Grady County, OK?

Grady County, Oklahoma is in USDA Hardiness Zone 7b. The average last spring frost is April 2 and first fall frost is November 5.

🌱

Your Grady County Garden Planner — Free

A 22-page printable planner built for Grady County (Zone 7b). 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 Grady County, OK. Local conditions may vary. Last updated: August 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.