Canola Planting Calendar

Canola has two main forms in North America: a winter type sown in fall in milder regions and a spring type sown early in the northern states. Both have small seeds and little room for error at planting.

Key points

Winter and spring canola have different clocks and different risks.
The one NASS example available shows winter canola planting in late September in Oklahoma.
Seed is small, so seedbed and moisture matter a lot.
Protect pollinators by following label directions on any pest control product.

What is the difference between winter and spring canola?

Winter canola is sown in late summer or early fall, grows a rosette of leaves before cold weather, survives winter in the right climate and flowers in spring. Spring canola is sown as soon as the soil can be worked and flowers and matures within a single season. Winter types need enough winter hardiness for your area, and spring types need a cool, moist start and a finish before hot, dry weather.

Which type fits depends on your winter. In parts of the southern Plains and the Pacific Northwest, winter canola is a workable crop. Farther north, spring canola is more common. Your state extension oilseed specialist can tell you which is realistic for your county and which varieties have performed in trials.

When is the usual canola planting window?

Canola is a small acreage crop in the federal series, so published dates are limited. In the October 2010 edition of the USDA NASS Usual Planting and Harvesting Dates, winter canola in Oklahoma shows most active planting from about September 15 to September 30, with harvest in early June. That is a single state at one point in time, so use it as an example of how early winter canola goes in, not as a date for your farm.

For spring canola in the northern states, use your land-grant extension guide. Those guides usually tie seeding to soil workability and the end of hard frosts, and they warn against seeding too early into cold, crusted soil.

Winter canola goes in as early as September in Oklahoma
Spring canola goes in as soon as soil is workable
Ask extension for a local seeding window

Why does seedbed preparation matter so much?

Canola seed is small, so it needs a firm, level seedbed and shallow, even placement. Deep seed can fail to emerge, and loose, cloddy ground dries out around the seed. Heavy residue can also interfere. A good rule is to check seed depth in the field after the planter passes, not just at the start of the day.

Moisture at planting is the other half. Winter canola in particular needs enough fall growth to survive winter, so planting dry and waiting for rain is risky. Ask extension about soil moisture guidelines and the fall growth stage that gives good winter survival in your area.

How does fall growth stage affect winter survival?

Winter canola that is too small going into winter may not survive, while plants that are too large can be more exposed to injury. Extension programs usually describe a target stage for entering winter, such as a number of true leaves or a size of the root crown, and the number comes from local research. Use your own state's number rather than a figure from another region.

Planting date is the main way you control the stage. A dry fall or early frost can derail the plan, so ask your local extension agent how to evaluate a stand in late fall and what to do if the stage is behind.

What do you need to plan for pests, weeds and pollinators?

Canola attracts insects, including some that can damage seedlings, and it also flowers heavily, which draws bees and other pollinators. That means any insecticide decision has to balance crop protection against pollinator safety. Follow the label exactly, mind pre-harvest intervals, and ask extension about thresholds and timing that protect bees. Applicator licensing rules vary by state.

Weed control starts before planting, since canola is a weak competitor early. Rotation is also a factor, because canola shares some diseases with other crops in the mustard family. Ask extension how many years to wait before replanting canola in the same field.

What markets and rules should you check first?

Canola needs a market, usually a crushing plant or a contract, and delivery points can be far apart. Talk to a buyer before planting, and ask about variety and quality requirements. Check crop insurance rules and final planting dates for your county with your agent and USDA Risk Management Agency resources.

If you are new to the crop, start with a small field and record dates, stages and results. Your notes are valuable for adjusting the plan.

Line up a buyer before planting
Start small if the crop is new to you
Record planting date, stages and results

Timing at a glance

Timing ranges for this topic
Item	Window	Caveat
Winter canola, Oklahoma	Most active planting from about September 15 to September 30	Usual dates describe typical field activity in that state, not a safe date for your farm. Check your own last frost date, soil temperature and your state extension guide.

When to get local help: Ask your county extension office or a certified crop adviser about varieties, seeding windows and buyers in your region.

Sources and further reading

Last reviewed: November 2026. Educational information, ranges only. Confirm timing with your county extension office.

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