Corn in Oklahoma – When to Plant & How to Grow

Corn is a staple crop in Oklahoma, and knowing when to plant and how to grow it successfully is essential for farmers and gardeners alike. In this article, we will explore the best corn varieties for Oklahoma, the climate and hardiness zones in the state, as well as the optimal planting and harvesting times. We will also answer some frequently asked questions about growing corn in Oklahoma.

Best Corn Varieties for Oklahoma

Choosing the right corn variety is crucial for a successful harvest in Oklahoma. Here are some top choices that are well-suited to the state’s climate:

  • Pioneer P1197
  • Dyna-Gro 58VT55
  • DeKalb DKC63-42

These varieties are known for their adaptability to Oklahoma’s weather conditions and can withstand the challenges posed by the state’s climate.

Oklahoma’s diverse climate, with its hot summers and occasional drought conditions, requires corn varieties that are not only high-yielding but also resilient. Pioneer P1197 is a popular choice among Oklahoma farmers due to its excellent drought tolerance and consistent performance in the state’s varying weather patterns. Its strong stalks and disease resistance make it a reliable option for growers looking to maximize their yields.

Another top contender, Dyna-Gro 58VT55, is favored for its early maturity and exceptional standability. This variety thrives in Oklahoma’s fertile soils, producing uniform ears with excellent kernel depth. Farmers appreciate its strong roots, which help withstand the windy conditions that can sometimes sweep across the state during critical growth stages.

Climate & Hardiness Zones in Oklahoma

Oklahoma has a diverse climate, ranging from hot and humid summers to cold winters. The state is located in USDA hardiness zones 6 and 7, with zone 6 covering the northern part of the state and zone 7 encompassing the southern regions.

The temperature and precipitation patterns in these zones play a significant role in determining the suitable planting and harvesting times for corn.

In zone 6 of Oklahoma, which includes cities like Tulsa and Oklahoma City, the average annual minimum temperature ranges from -10 to 0 degrees Fahrenheit. This means that gardeners and farmers in this zone need to be mindful of frost dates and choose corn varieties that can withstand colder temperatures.

On the other hand, zone 7 in southern Oklahoma, including cities like Lawton and Ardmore, has milder winters with average annual minimum temperatures ranging from 0 to 10 degrees Fahrenheit. This allows for a longer growing season compared to zone 6, giving farmers the opportunity to plant corn earlier in the year and potentially have multiple harvests.

When to Plant Corn in Oklahoma

The ideal time to plant corn in Oklahoma depends on various factors, including the average frost dates and soil temperature. Here is a general timeline to follow:

  1. Early April: Start preparing the soil for planting by removing weeds and adding organic matter such as compost.
  2. Mid-April to Mid-May: Plant corn seeds when the soil temperature reaches around 50°F (10°C). This temperature ensures optimal germination and root development. Use a soil thermometer to determine the temperature.
  3. Plant seeds in rows, spacing them about 12-15 inches apart. Plant the seeds about 1-2 inches deep in well-drained soil.
  4. Keep the soil consistently moist during the germination period, which typically takes 7-10 days.

It’s important to monitor the weather forecast and adjust your planting schedule accordingly, as late frosts can damage young corn plants.

When selecting corn varieties to plant in Oklahoma, it’s essential to consider the length of the growing season. Short-season corn varieties are better suited for the state, as they have a higher chance of maturing before the intense summer heat sets in. Some popular short-season corn varieties for Oklahoma include ‘Pioneer 3751’ and ‘DeKalb 641’.

Additionally, incorporating a balanced fertilizer into the soil before planting can help provide essential nutrients for the corn plants throughout their growth cycle. A soil test can determine the specific nutrient needs of your soil, ensuring that you apply the right type and amount of fertilizer for optimal corn production.

When to Harvest or Pick Corn in Oklahoma

The harvesting time for corn in Oklahoma largely depends on the corn variety you planted, as well as the desired maturity level. Generally, sweet corn varieties are ready for harvest around 18-24 days after the silks first appear. Here are some signs indicating that the corn is ready to be picked:

  • The silks have turned brown and are dry to the touch.
  • The ears feel plump and the kernels are fully developed.
  • When you press a kernel, milky juice comes out.

Tip: To ensure maximum sweetness, harvest the corn in the morning when the sugars are concentrated.

It’s important to note that the weather conditions in Oklahoma can also play a significant role in determining the optimal time for corn harvesting. Corn is sensitive to both heat and moisture levels, so monitoring the local weather forecast can help you plan the best time to harvest your crop. Additionally, paying attention to the overall health of the corn plants, including signs of disease or pest infestation, can also impact the timing of harvest.

Another factor to consider when deciding when to pick corn in Oklahoma is the intended use of the corn. If you are planning to consume the corn fresh, harvesting it at the peak of maturity ensures the best flavor and texture. On the other hand, if you are growing corn for drying or processing purposes, allowing the corn to stay on the stalk longer can help enhance its storage qualities. By carefully evaluating these various factors, you can make informed decisions about when to harvest your corn crop for optimal results.

Frequently Asked Questions

Q: Can I grow corn in containers?

A: Yes, you can grow corn in containers, but it’s important to choose a dwarf or compact variety and provide adequate water and nutrients.

When growing corn in containers, it’s crucial to select a container that is at least 12 inches deep to accommodate the plant’s root system. Additionally, using a high-quality potting mix enriched with compost will help provide the necessary nutrients for healthy growth. Consider placing the containers in a location that receives full sunlight for optimal corn production.

Q: How often should I water my corn plants?

A: Corn requires consistent moisture, especially during dry spells. Water the plants deeply once or twice a week, ensuring that the soil stays consistently moist but not waterlogged.

It’s important to water the corn plants at the base to prevent water from collecting in the plant’s whorls, which can lead to disease. Mulching around the base of the plants can also help retain soil moisture and reduce the frequency of watering. Monitoring the soil moisture levels regularly will help you adjust your watering schedule as needed.

Q: Can I save seeds from my corn plants for the next season?

A: Yes, you can save seeds from open-pollinated corn varieties. Allow the ears to fully mature on the stalks until the kernels are dry and hard. Then, remove the kernels, store them in a cool, dry place, and use them for planting next year.

When saving corn seeds, it’s essential to ensure that the seeds are fully dry before storing them to prevent mold or rot. Labeling the seeds with the corn variety and the date of harvest can help you keep track of the seed’s viability. Storing the seeds in airtight containers in a cool, dark place will help maintain their quality for the next planting season.

Growing corn in Oklahoma can be a rewarding experience. By selecting the right variety, planting at the appropriate time, and providing the necessary care, you can enjoy a bountiful harvest of this delicious and versatile crop. Remember to always monitor weather conditions, adjust your planting schedule accordingly, and consult local agriculture authorities or university extension services for additional guidance.

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