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When to Plant Marigolds in Choctaw County, OK

Choctaw County, Oklahoma Zone 8a May

May to-do list for Choctaw County, Oklahoma

Your garden in Choctaw County, Oklahoma is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost March 18
Avg. first frost November 12
Soil temp (4") 68°F
Watering Low
Pest pressure Moderate
Daylight 13.8 hrs
  1. Collect marigolds at their peak

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

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

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Marigolds (Tagetes patula) are warm-season annuals beloved for their cheerful orange, yellow, and red blooms — and for their well-documented ability to repel pest nematodes in vegetable beds. Easy from seed, drought-tolerant once established, and bloom from early summer until the first hard frost.

Choctaw County, Oklahoma is in USDA Zone 8a. The average last spring frost is March 18 and the first fall frost is November 12, giving you a growing season of approximately 239 days.

At an elevation of 576 feet, Choctaw County receives approximately 24.4 inches of rainfall annually with predominantly loam soil. Summer highs average 91°F, providing good warmth for Marigolds during the growing season.

Choctaw County, OK (Zone 8a) Long season
239 days
Last Spring Frost March 18
239 growing days
First Fall Frost November 12

Choctaw County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (65 days to spare)
Start indoors: Apr 18 Transplant: Feb 28 🍅 Harvest: Apr 25 – Aug 29
Recommended (50%) ✓ Fits season (64 days to spare)
Start indoors: Apr 29 Transplant: Mar 11 🍅 Harvest: May 6 – Sep 9
Safe Start (90%) ✓ Fits season (52 days to spare)
Start indoors: May 26 Transplant: Apr 7 🍅 Harvest: Jun 2 – Oct 6

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 Choctaw County

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

Soil pH

Your soil pH (6.4–7.5) is within Marigolds's preferred range (6.0–7.5).

Soil Texture

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

Drainage

Drainage is adequate for Marigolds.

Organic Matter

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

How to Plant Marigolds

0.3"
Planting Depth
10"
Between Plants
12"
Between Rows

Succession Planting Marigolds

5
successive plantings in your 239-day season

Sow every 5.7 weeks. Last sowing by Sep 03 to harvest before frost.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
0.4″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 565 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Marigolds

Marigolds needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Marigolds Needs Rainfall You Supplement Action
Jan 0.6" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 2.2" 1.6" 0.6" 💧 Light watering
Apr 2.2" 2.5" 0" ✅ Rainfall sufficient
May 2.2" 3.8" 0" ✅ Rainfall sufficient
Jun 2.2" 3.6" 0" ✅ Rainfall sufficient
Jul 2.2" 3.5" 0" ✅ Rainfall sufficient
Aug 2.2" 3" 0" ✅ Rainfall sufficient
Sep 2.2" 2.1" 0.1" 💧 Light watering
Oct 2.2" 1.6" 0.6" 💧 Light watering
Nov 2.2" 0.8" 1.4" 🚿 Regular watering
Dec 0.6" 0" ❄️ Dormant

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

Marigolds 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.

Marigolds needs ~1,095 GDD — county provides 4,361 GDD Excellent fit

Marigolds Planting Timeline — Choctaw County, OK

Marigolds Planting Calendar

Activity When Date Range
Start Indoors April 29 Apr 29 – May 13
Transplant Outdoors March 11 Mar 11 – Mar 25
Direct Sow March 11 Mar 11 – Apr 1
Harvest May 6 May 6 – Sep 9

Plant 0.3" deep · 10" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Only during dry spells

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 8a

📆 Growing Season

239 days in Choctaw County

Growing Tips for Marigolds in Choctaw County

Direct sow Marigolds outdoors after March 18 in Choctaw County when soil has warmed and frost danger has passed.

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

General growing tips

Direct-sow after last frost or start indoors 4-6 weeks earlier. Deadhead spent blooms to keep new flowers coming. French marigolds (T. patula) are the most reliable nematode repellents — plant a band around vegetable beds. Tolerate poor soil but bloom best with monthly compost.

Companion Planting

Good Companions

Avoid Planting Near

  • Beans
  • Cabbage

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Marigolds Seeds
Life Cycle Annual
Pollination Self-Pollinating
How to Collect Let flower heads dry on plant. Pull dried petals to reveal seeds.
Storage Store in envelopes; viable 3 years at 35°F, under 50% humidity.

Very easy to save. Seeds are the long, thin, dark pieces inside the dried flower head.

Frequently Asked Questions

When should I plant Marigolds in Choctaw County, OK?

Choctaw County is in Zone 8a with an average last frost of March 18. Plan your Marigolds planting based on this frost date — see the calendar above for exact timing.

What planting zone is Choctaw County, OK?

Choctaw County, Oklahoma is in USDA Hardiness Zone 8a. The average last spring frost is March 18 and first fall frost is November 12.

🌱

Your Choctaw County Garden Planner — Free

A 24-page printable planner built for Choctaw 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 Choctaw County, OK. 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.