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Growing Basil in Oklahoma City

🇺🇸 Zone 5 Planting Guide · Humid subtropical climate

USDA Zone 5 215 frost-free days 50-75 days to harvest

Quick Answer: Growing Basil in Oklahoma City

Yes, you can grow Basil in Oklahoma City, US! Plant during Apr, May, Jun, Jul for best results. Oklahoma City is in USDA Zone 5 with a Humid subtropical climate, offering 215 frost-free days per year. The difficulty level is easy, and Basil takes 50-75 days to harvest. Basil needs full sun and regular watering.

Climate Match Analysis

Moderate Match Oklahoma City + Basil

Oklahoma City's climate requires careful timing. Winter lows (-4°C) drop below Basil's minimum (10°C), so avoid cold months. Follow the recommended planting months for success.

Basil tolerates 10°C to 35°C
Optimal: 20°C - 30°C
Oklahoma City range -4°C to 34°C

Oklahoma City Climate Data

USDA Zone
5
Frost-Free
215days
Winter Low
-4°C
Summer High
34°C
Rainfall
930mm/yr
Climate
Cfa
Humid subtropical

Basil Planting Calendar for Oklahoma City

Green months show the best time to plant Basil in Oklahoma City

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Plant Basil Not recommended

Basil Growing Requirements

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Sunlight

Full Sun

6+ hours direct sunlight

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Water

Regular

Consistent moisture, 1-2 inches/week

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Days to Harvest

50-75

From planting to first harvest

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Difficulty

easy

Great for beginners

💡 Growing Tips for Basil

Pinch flower buds to encourage leaf growth. Harvest from top down. Wait until soil warms to at least 20°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Frost tolerance: Basil is NOT frost tolerant — wait until after the last frost in Oklahoma City.

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Companion Plants for Basil

Find out which plants grow best alongside Basil — and which to keep apart

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Grow Basil Indoors

No garden? Learn how to grow Basil indoors with our complete guide

How to Grow Basil in Oklahoma City

Oklahoma City, US is in USDA Hardiness Zone 5 with a Humid subtropical climate (Köppen Cfa). With winter lows of -4°C and summer highs of 34°C, the growing season spans approximately 215 frost-free days. Basil is one of the easiest plants to grow in this climate.

Basil thrives in temperatures between 20°C and 30°C, requiring full sun and regular watering. In Oklahoma City, the best months to plant Basil are April, May, June, July. Basil is not frost tolerant, so it's important to wait until after the last spring frost before transplanting outdoors. Expect to harvest in approximately 50-75 days after planting.

With 930mm of annual rainfall, Oklahoma City provides moderate natural moisture. You'll likely need to supplement with regular watering, especially during the growing season.

Other Plants That Grow in Oklahoma City

More plants you can grow alongside Basil in Oklahoma City

Keep Exploring

Frequently Asked Questions

Can I grow basil in Oklahoma City?

Yes! Basil can be successfully grown in Oklahoma City, US. Oklahoma City is in USDA Hardiness Zone 5 with a Humid subtropical climate. The difficulty level for growing Basil here is rated "easy". The best months to plant are April, May, June, July.

When should I plant basil in Oklahoma City?

In Oklahoma City, the recommended planting months for Basil are April, May, June, July. Oklahoma City has 215 frost-free days per year, with winter lows of -4°C and summer highs of 34°C. Since Basil is not frost tolerant, make sure to plant after the last frost date.

How long does basil take to grow in Oklahoma City?

Basil typically takes 50-75 days from planting to harvest. In Oklahoma City's Humid subtropical climate with 215 frost-free days, you have plenty of time to grow Basil to maturity. Pinch flower buds to encourage leaf growth. Harvest from top down. Wait until soil warms to at least 20°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Can I grow basil indoors in Oklahoma City?

Basil can potentially be grown indoors in Oklahoma City with proper conditions. It requires full sun (6+ hours of direct light — a south-facing window or grow lights recommended). Indoor growing extends your season beyond the Apr, May, Jun, Jul outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant basil in Oklahoma City?

Plant Basil in Oklahoma City during April, May, June, July. These are the optimal months based on Oklahoma City's USDA Zone 5 climate, 215 frost-free days, and temperature range of -4°C to 34°C.

Is basil hard to grow in Oklahoma City?

Basil is rated "easy" to grow in Oklahoma City. This is a great choice for beginners — it is forgiving and adapts well to this climate. The climate match for Basil in Oklahoma City is Moderate.

What grows well with basil in Oklahoma City?

In Oklahoma City, you can grow many companion plants alongside Basil. Good options from the same planting window include Tomato, Lettuce, Carrot, Pepper and 2 more. These plants share similar planting months and thrive in Oklahoma City's Zone 5 climate.

Does basil need full sun in Oklahoma City?

Basil requires full sun. In Oklahoma City, provide at least 6 hours of direct sunlight daily. Most garden locations with southern exposure will work well.

Last updated: March 2026 · Climate data from NOAA, FAO, USDA

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