When to Plant in Oklahoma City, OK

In Oklahoma City, the median last spring frost occurs on April 2, and the first fall frost arrives on November 3, giving the area approximately 214 frost-free days each year. This extended growing season allows for a diverse array of plants to flourish, including both warm-season and cool-season crops which can be grown outside of the frost periods to maximize yield.

The climate here falls under the humid subtropical microclimate, with hot, humid summers and generally mild winters. Vegetables such as tomatoes, peppers, and corn thrive due to the warm temperatures and ample sunlight, while crops like Brussels sprouts and kale may struggle due to the extreme summer heat that can cause them to bolt, reducing their yield and quality.

What to plant now in Oklahoma City

In early spring (late March to mid-April), plant cool-weather crops such as peas, lettuce, and spinach, allowing them to establish before the risk of the last frost on April 2.
During late spring (mid-May through early June), focus on planting warm-season crops like tomatoes, peppers, and cucumbers. These thrive when temperatures increase post the last frost.
In late summer (August to early September), consider planting fall crops like kale, turnips, and radishes, which can mature before the first frost date of November 3.
As fall approaches (late September through October), prepare for the cooler months by planting garlic and onions. These can be established before the first frost, ensuring they overwinter successfully.

In Oklahoma City (215 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.

Month by month in Oklahoma City

Month	What to do
January	During January, focus on planning your garden layout and selecting seeds. It's a great time to review last year’s performance and consider what vegetables and flowers to grow for the upcoming season.
February	February is still cold, but you can start indoor planting of cool-season crops like broccoli and tomatoes. Starting seeds indoors can give you a head start once temperatures warm up.
March	As spring approaches, prepare your garden beds for planting. By late March, it’s time to plant peas and other early crops that can tolerate the cold conditions.
April	With the median last frost on April 2, it's crucial to monitor temperatures closely. Plant warm-season crops like tomatoes and peppers after the risk of frost has passed.
May	May is the perfect time to tend to your garden as temperatures rise. Focus on watering and mulching to retain moisture for your growing crops, especially for those recently planted.
June	In June, continue maintenance such as weeding and pest control. Harvest early crops like spinach and lettuce while continuing to care for warm-season vegetables.
July	July often brings the hottest weather. Ensure your plants are adequately watered and check for signs of stress in your crops. This is also a good time for mid-summer planting.
August	As temperatures begin to cool, consider planting fall crops such as kale and radishes. Plan your fall garden so that crops can mature before the first frost.
September	In September, start harvesting the last of your summer crops while simultaneously planting new seeds for cooler weather. Monitor the weather as fall approaches.
October	October is a transition month. As temperatures drop, mulch around plants to protect them from early frosts. Prepare your garden for the upcoming winter.
November	With the median first frost on November 3, ensure all tender crops are harvested. Begin winter preparations for your garden to protect perennials and other overwintering plants.
December	In December, the gardening season winds down. Focus on planning for next year, cleaning up the garden, and considering indoor gardening options during the cold months.

Frost dates for Oklahoma City ZIP codes

ZIP	Last spring frost (50%)	First fall frost (50%)	Zone
73160	April 2	November 3	7b
73120	April 4	October 30	7b
73110	April 2	November 2	7b
73127	April 2	November 3	7b

FAQ

When is the last frost in Oklahoma City?

The last frost in Oklahoma City is typically recorded on April 2, making it essential to plant sensitive crops only after this date.

What vegetables grow best in Oklahoma City?

Tomatoes, peppers, and corn flourish in Oklahoma City's climate due to the warmth and sunlight, while Brussels sprouts and kale can struggle under intense heat.

When should I plant tomatoes in Oklahoma City?

Tomatoes should be planted after the last frost date of April 2, ideally around mid to late April, to give them a full growing season.

Can I garden year-round in Oklahoma City?

While Oklahoma City has a long growing season, traditional gardening is best suited from spring to fall, with some cold-hardy crops possible in winter.

How does Plan My Garden help Oklahoma City gardeners?

Plan My Garden provides tailored advice on planting schedules, best crops for local conditions, and tips on garden maintenance specific to Oklahoma City's climate.