In today’s article we are going to talk about onions bolting. From what the term bolting means, causes and tell tale signs, as well as what to do with your onion crop if it bolts. We’ve got it all, keep reading to find out more.
What does bolting mean?
When you hear someone say that their onion crop has bolted it means that they prematurely produce a flower stalk. This usually happens due to stress factors such as fluctuating temperatures, particularly a sudden cold snap followed by warm weather.
Bolting focuses the plant’s energy from bulb development to flowering and seed production, often resulting in smaller and less flavorful bulbs.
Once an onion bolts, the bulb’s quality typically declines, and the plant becomes less suitable for harvesting and eating.
What are the signs of bolting?
The signs that onion plants are bolting include:
- Changes in leaves – the appearance of the leaves may begin to change. Leaves can become less flexible or turn yellow.
- Central Flower Stalk – The most noticeable sign is the appearance of a thick, central flower stalk growing from the center of the plant. The stalk is taller and thicker than the leaves.
- Swollen Flower Bud – At the top of the central stalk, a flower bud will form and eventually bloom. The bud may initially look like a small, swollen tip.
If you notice these signs, there is a good chance that your onions are bolting. Once the onions begin to bolt, the bulb will stop growing.
It’s best to harvest the onions and use them quickly. Sadly, I had one bed of onions bolt this year. I had to decide pretty quickly what to do with them as I didn’t want to waste them.
So, I made onion jam and it sure is delicious! Great on vegetables, a sandwich and even pizza. This is the onion jam recipe that I used.
Conclusion
We hope you found today’s article helpful. While our onions didn’t make it to full maturity, all was not lost. We were able to use them as onion jam and we will try again in the fall. Happy Gardening!