Red tomatoes

Best Planting Times for Tomatoes in Kansas

Planting MethodActivityRecommended Dates
Outdoor PlantingIndoor Seed StartingMarch 15 – April 15
Transplant OutdoorsMay 1 – May 31
Greenhouse PlantingYear-roundAdjust planting based on temperature control in the greenhouse

Planting Conditions in Kansas

Kansas experiences a continental climate with cold winters and hot, humid summers, placing it within USDA Hardiness Zones 5b to 6b. The state’s climate requires strategic planning for tomato planting, especially to avoid late spring frosts and summer heat.

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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.
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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.
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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.
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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.
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Greenhouse Growing

In Kansas, where the climate can vary, a greenhouse is beneficial for providing a controlled environment. It helps to extend the growing season by starting tomatoes early in the spring and protecting them from early frosts in the fall. Additionally, it shields the plants from harsh winds and fluctuating temperatures.

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

Fertilizer

Fertilizer is essential for providing your tomato plants with the necessary nutrients for healthy growth and a successful yield.
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Other planting guides for Kansas:

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

Sun Requirements

Tomatoes need full sun, with at least 6-8 hours of direct sunlight daily. Kansas’ long summer days typically provide the necessary sunlight for healthy tomato growth.

Starting Tomatoes Indoors

In areas like Wichita (Zone 6b), start tomato seeds indoors from March 15 to April 15. This timing ensures seedlings are ready for transplanting outdoors from May 1 to May 31, after the last frost.

Transplanting Tomato Seedlings

Transplant seedlings outdoors from May 1 to May 31, when soil temperatures are consistently above 50°F. Space the seedlings 24-36 inches apart in rows at least 36 inches apart to ensure adequate air circulation and sunlight exposure.

General Care and Maintenance

Watering:

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

Fertilizing:

  • Apply a balanced fertilizer at planting and again when the first fruits start to form. Incorporating compost into the soil before planting can improve fertility and structure.

Pest and Disease Management:

  • Watch for common pests such as aphids, cutworms, and tomato hornworms.
  • Utilize organic or integrated pest management strategies to keep pests under control and prevent diseases.

Harvesting Tomatoes:

  • Harvest tomatoes when they are fully colored and firm. During Kansas’ hot summer months, frequent harvesting helps to prevent overripening and splitting, ensuring the best quality fruit.
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