Is Onion a biennial?

Related questions

1. What is 6 months anniversary called?
2. What do you call every 4 months in a year?
3. Does onion contain Sulphur?
4. Do onions spread?
5. Do perennials live forever?
6. Can you grow onions all year round?
7. What are the plants that come back every year?
8. What does biennial plant mean?
9. Is semi annual every 6 months?
10. Is semi annual and biannual the same?

Tags

1. #their
2. #dormant
3. #winter
4. #bulbs
5. #which
6. #plant
7. #harvested
8. #onions
9. #first
10. #again
11. #plants
12. #biennial
13. #sprouts
14. #sprout
15. #ground
16. #means
17. #spring
18. #usually