Also known as "oilseed Rape · Canola · Coleseed
Rapeseed (Brassica napus) is a bright yellow flowering plant grown for its oil-rich seeds, used in cooking, animal feed, and industrial applications.
At-a-glance light, water, soil, and growing conditions from plant data
Full sun
100% intensity
Prefers at least 6-8 hours of direct sunlight daily for optimal growth and flowering.
Moderate
50% intensity
Keep soil consistently moist, but avoid waterlogging.
Well-drained
50% intensity
Moderate
50% intensity
Prefers cool to moderate temperatures (10-25°C). Sensitive to extreme heat and frost.
Moderate
50% intensity
Benefits from nutrient-rich soil and occasional feeding during the growing season.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | Yes |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Keep soil consistently moist, especially during establishment and flowering. Avoid waterlogging, as this can lead to root rot.
Reduce watering slightly once established, allowing the top few centimeters of soil to dry out between waterings. In hot, dry weather, more frequent watering may be necessary.
Pruning is generally not required for Brassica napus. If plants become leggy or overcrowded, you can lightly trim them to encourage bushier growth and improve air circulation.
Remove any dead or diseased foliage promptly to maintain plant health and prevent the spread of issues.
Brassica napus is typically propagated by seeds sown directly into the garden after the last frost. Seeds germinate readily in warm soil.
For an earlier start, seeds can be sown indoors 4-6 weeks before the last frost date and transplanted carefully after hardening off.
Repotting is not a common practice for Brassica napus, as it is usually grown as an annual from seed. If grown in containers for a prolonged period, ensure the pot is large enough to accommodate root growth.
Repotting is typically only necessary if plants are root-bound and showing signs of stress.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Rapeseed (Brassica napus)
10 known issues from plant disease data
Downy Mildew on Rapeseed = Canola causes pale leaf spots with grayish growth beneath, reducing seedling vigor and leaf quality.
Alternaria Black Spot on Rapeseed = Canola causes dark spots on leaves and pods, leading to pod damage, shriveling, and seed loss.
Grey Stem on Rapeseed = Canola causes gray stem discoloration, weak stalks, and premature ripening, leaving crops thin and uneven.
Fusarium Wilt on Rapeseed = Canola causes yellowing, wilting, stem browning, and poor plant growth that can end in early death.
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Brassicales |
| Family | Brassicaceae |
| Genus | Brassica |
| Species | Brassica napus |
Similar in genus Brassica
Answers based on plant encyclopedia data
