Red tomatoes

Best Planting Times for Tomatoes in Oklahoma

Planting MethodActivityRecommended Dates
Outdoor PlantingIndoor Seed StartingFebruary 15 – March 15
Transplant OutdoorsApril 15 – May 15
Greenhouse PlantingYear-roundAdjust planting based on temperature control in the greenhouse

Planting Conditions in Oklahoma

Oklahoma has a varied climate, ranging from humid subtropical in the east to semi-arid in the west, with USDA Hardiness Zones spanning from 6a to 8a.

Affiliate Disclosure: As an Amazon Associate, I earn from qualifying purchases at no extra cost to you.

Useful Tools for Starting Tomatoes Indoors

Using the right tools can save you time and increase your success rate.

Seeds

Quality seeds lead to better germination and healthier plants. Starting with high-quality seeds gives your tomatoes the best chance to thrive from the very beginning.
Seeds Image
Browse Tomato Seeds on Amazon

Planting Trays

Planting trays help you organize your seedlings and ensure they have enough space to grow before you transplant them outdoors. This makes the process more efficient and increases the chances of strong, healthy plants.
Planting Trays Image
Find Planting Trays on Amazon

Grow Lights

Grow lights are essential if you don’t have enough natural sunlight. They provide your seedlings with the light they need to grow strong and healthy, even in less-than-ideal conditions.
Grow Lights Image
Check out Grow Lights on Amazon

Seed Starting Soil

Using light, fine soil specifically designed for seed starting helps young roots establish quickly and promotes healthy growth. It’s an easy way to give your seedlings the best start possible.
Seed Starting Soil Image
Get Seed Starting Soil on Amazon

Greenhouse Growing

In Oklahoma, where the growing season can be unpredictable due to varying temperatures, a greenhouse is essential for creating a stable environment. It allows you to start your tomato plants early in the spring and continue growing them well into the fall. This way, your plants are protected from unexpected weather changes, ensuring a more consistent harvest.

Currently, the 8x10x7.5 FT Greenhouse is priced at $999. It’s a great investment for ensuring your tomatoes thrive all year round.
Greenhouse Image 1
Greenhouse Image 2
Check the latest price on Amazon.

Fertilizer

Fertilizer is essential to provide your tomato plants with the nutrients they need for strong growth and a successful harvest.
Fertilizer Image
Explore Fertilizer on Amazon

Other planting guides for Oklahoma:

Any questions on growing tomatoes? Visit our forum to discuss: Growing Tomatoes

Sun Requirements

Tomatoes in Oklahoma require full sun, needing at least 6-8 hours of direct sunlight daily. The state’s hot summers provide ample sunlight, but managing heat stress is crucial for tomato health.

Starting Tomatoes Indoors

In areas like Oklahoma City (Zone 7a), start tomato seeds indoors from February 15 to March 15. This early start allows the seedlings to be ready for transplanting outdoors from mid-April to mid-May, once the threat of frost has passed.

Transplanting Tomato Seedlings

Transplant seedlings outdoors from April 15 to May 15, ensuring that soil temperatures are consistently above 60°F. Space the seedlings 24-36 inches apart in rows at least 36 inches apart to allow for proper air circulation and sunlight exposure.

General Care and Maintenance

Watering:

  • Water deeply and consistently to maintain evenly moist soil. Oklahoma’s hot summers can cause the soil to dry out quickly, so regular watering is essential.
  • Water at the base of the plants to prevent wetting the foliage, which helps reduce the risk of fungal diseases.

Fertilizing:

  • Apply a balanced fertilizer at planting and again when the first fruits begin to form. Adding compost to the soil before planting can improve fertility and help retain moisture in Oklahoma’s often sandy soils.

Pest and Disease Management:

  • Monitor for common pests like aphids, cutworms, and tomato hornworms. The humid climate can also increase the risk of fungal diseases, so vigilance is key.
  • Use organic or integrated pest management strategies to protect your plants from pests and diseases.

Harvesting Tomatoes:

  • Harvest tomatoes when they are fully colored and firm. Frequent harvesting during Oklahoma’s peak summer months helps ensure the best quality fruit and prevents overripening.
BeeJay
Latest posts by BeeJay (see all)