How Do Oats Grow? Sow, Care, And Harvest

How Do Oats Grow

Oats are a nutrient-rich food associated with lower blood cholesterol and reduced risk of heart disease when consumed regularly. They are one of the easiest grains to grow and are particularly important in areas with cool, wet summers.

Choosing and Preparing a Planting Location

The best way to grow oats is to find an area where the soil has a pH between 6 and 7. Before planting your oat seeds, it’s important to remove all weeds from the area as oats have a difficult time growing properly in a weed-infested environment. Once the soil is free of weeds, use a tiller or cultivator to break up the soil and prepare it for planting the oat seeds.

Planting and Caring for the Oats

How Do Oats Grow

Plant the seeds during spring or fall. If you’re growing oats for food, plant them in the spring so you have a summer harvest. If you’re growing oats for ground cover, plant your seeds in the early spring for green manure and plant them in the fall if you’re hoping to get winter-killed ground cover. Lay the oat seeds 1⁄4 inch (0.64 cm) apart in rows. It’s best to plant your seeds in evenly-spaced rows.

How Do I Know if My Oat Seeds Are Good Quality?

Determining the quality of oat seeds involves several factors:

  1. Genetic components: The quality of seeds depends on the genetic components defined by the variety.
  2. Physical purity: This refers to the percentage of pure seed in a sample and the presence of contaminants such as weed seed, other crop seed, and inert matter.
  3. Viability: This is the ability of the seed to germinate and produce a healthy plant. Viability can be tested using a tetrazolium test, where seeds are pre-moistened, embryos removed, stained in tetrazolium, and visually assessed.
  4. Seed health: This refers to the absence of disease in the seed.

Additionally, the quality of oat seeds can be determined by the cultivar. The six most common selection criteria in oat varieties are yield, test weight, disease resistance, maturity, lodging resistance, and adaptation.

For a more advanced approach, multispectral imaging combined with multivariate analysis can be used for a rapid and nondestructive determination of oat cultivars.

What is The Best Way to Plant Oat Seeds?

Planting oat seeds involves a few steps:

  1. Choose a location: Oats prefer a soil pH between 6 and 7. You can test the soil with a commercial pH probe or a pH test strip.
  2. Prepare the soil: Remove all weeds from the area where you’ll be planting oats. Once the soil is free of weeds, use a tiller or cultivator to break up the soil and prepare it for planting the oat seeds.
  3. Sow the seeds: In early spring or fall, scatter the oat seeds evenly over the prepared soil. The seeds should be laid 1/4 inch (0.64 cm) apart in rows. Rake lightly to cover the seeds with a thin layer of soil.
  4. Water the seeds: Water gently to avoid washing away the seeds.

How Do I Prepare My soil For Planting Oats?

To prepare your soil for planting oats, follow these steps:

  1. Choose a location: Oats prefer a soil pH between 6 and 7. You can test the soil with a commercial pH probe or a pH test strip. If the pH doesn’t fall within this range, you can adjust it by adding limestone to raise the pH or a fertilizer that contains ammonium sulfate, ammonium nitrate, or urea to lower the pH.
  2. Remove weeds: Oats have a difficult time growing in a weed-infested environment. Use a weeding tool to loosen the soil around the weeds and then pull them out.
  3. Till the soil: Use a tiller or cultivator to break up the soil and prepare it for planting the oat seeds. If you have heavier soil or clay, use a moldboard plow instead of the cultivator.
  4. Prepare the seedbed: Break up any clumps at the surface level and use a rake to remove coarse material. If your soil is very heavy, mix the soil with sand.

What is The Best Time to Plant Oats?

The best time to plant oats depends on your purpose and climate. Generally, there are two optimal planting times for oats:

  1. Late winter to early spring (between February and early April)
  2. Late summer to fall (September to December)

If you’re growing oats for food consumption, it’s recommended to plant them in the spring for a summer harvest. If you’re growing oats for ground cover, you can plant them in the early spring for green manure or in the fall for a winter-killed ground cover.

In a temperate climate, oats can be planted earlier and there should be plenty of warmth during the summer. In a continental climate, while the growing season is shorter due to longer winters, there is still enough time to grow and harvest oats.

How Long Does it Take For Oat Seeds to Germinate?

How Do Oats Grow
How Do Oats Grow

Oat seeds typically take approximately one to three weeks to germinate. This can vary depending on several factors such as soil temperature, moisture, seed depth, and seed quality. Optimal conditions for oat germination include a soil temperature of at least 5°C, proper seed-to-soil contact, and adequate sunlight. Please note that the cooler the weather, the slower the seeds will germinate. For quick germination, the temperature should ideally be between 16 to 22 degrees Celsius with a soil pH between 6 and 7.

When to harvest oats?

Oats are typically ready for harvest in late summer or early fall, depending on the climate and growing conditions. The ideal time to harvest oats is when the grain has reached its maximum weight and has a moisture content of around 14%. Oats are ready for harvest when the kernels are hard and dried.

Here are some indicators to help you determine the optimal time for harvesting oats:

  • Growth stage: Oats are typically ready for harvest when the majority of the panicles (seed heads) have emerged and turned yellow to brown.
  • Grain moisture content: The ideal moisture content for harvesting oats is around 14-18%. Harvesting oats too early (when moisture content is too high) can lead to increased drying costs and potential grain spoilage, while harvesting too late (when moisture content is too low) can result in shattering, which leads to yield loss.
  • Field drying conditions: Dry weather conditions are generally favorable for drying down oats in the field, while high humidity, prolonged rainfall, or late-season dew can delay drying and increase the risk of mold development.

What is The Best Way to Store Harvested Oats?

Storing harvested oats properly can help maintain their freshness and nutritional value for a long time. Here are some steps to store oats effectively:

  1. Airtight Storage: Store oats in an airtight container to prevent exposure to air and moisture. This could be glass or plastic containers, vacuum-sealed containers, or food-grade buckets.
  2. Location: The storage area should be clean, cool, dark, and dry. The pantry, fridge, and freezer are ideal places to store oats.
  3. Pest Prevention: It’s important to adhere to standard pest prevention techniques to discourage uninvited visitors. You can freeze the oats before storage or store them in an oxygen-free environment to prevent pantry pests.
  4. Long-Term Storage: For long-term storage, #10 cans with an oxygen absorber inside are considered the best option. These cans are airtight and durable against insects and rodents. When stored in a cool, dry area, oats in #10 cans can last for up to 30 years.


Growing oats can be a rewarding experience, whether you’re doing it for personal consumption or as a cover crop. With the right care and attention, you can have a successful oat harvest.

Remember, this is just a brief overview. For a more detailed blog post, you may want to expand on each of these points, perhaps including information on the history of oat cultivation, the nutritional benefits of oats, and different ways to use harvested oats.

FAQs About the Growth of Oats

1. What type of climate do oats thrive in?

A: Oats thrive in cool temperatures and are typically planted in early spring or late summer, depending on the climate. They are well-suited for regions with moderate climates.

2. How long does it take for oats to grow from seed to harvest?

A: The time it takes for oats to grow from seed to harvest varies depending on factors such as climate and oat variety. Generally, oats take about 60 to 90 days to reach maturity.

3. What is tillering, and why is it important in oat growth?

A: Tillering is the emergence of additional stems from the base of the oat plant. It contributes to increased grain production by creating more flowering structures. The number of tillers can be influenced by factors like planting density and nutrient availability.

4. How are oats pollinated?

A: Oats are wind-pollinated. The flowers on the oat panicles are designed to capture windborne pollen for successful fertilization.

5. When is the best time to harvest oats?

A: Oats are harvested when the grains are fully developed and have reached the desired moisture content. Harvesting typically occurs in late summer or early fall.

6. What happens after oats are harvested?

A: After harvesting, oats undergo processing to remove the outer husk or hull. The remaining oat groats are then cleaned, toasted, and processed into various forms like old-fashioned oats, quick oats, or instant oats.

7. Are oats a sustainable crop to grow?

A: Yes, oats are considered a sustainable crop. They are hardy, adaptable, and can be grown in rotation with other crops, contributing to soil health. Additionally, oats require fewer inputs like pesticides and fertilizers compared to some other grains.

8. Can oats be grown in home gardens?

A: Yes, oats can be grown in home gardens. However, they do require space and cool weather to thrive. Home gardeners can sow oat seeds directly in the soil, providing adequate sunlight and moisture.

9. What are some common oat pests and diseases?

A: Common oat pests include aphids, mites, and armyworms, while diseases like rust and smut can affect oat crops. Integrated pest management practices and disease-resistant oat varieties are often used to mitigate these issues.

10. How can consumers support sustainable oat farming practices?

A: Consumers can support sustainable oat farming by choosing products from brands that prioritize sustainable and ethical farming practices. Additionally, reducing food waste by consuming oats and oat products responsibly contributes to overall sustainability.