What is an onion?
Where to grow onions?
When to grow onions
Taking care of your plants
Diseases or pests
Onion fly maggots
Leek rust or onion rust is a fungal disease. Puccinia allii or rust has a tendency to show up if the soil and the air are too moist (too much rain in the fall or springtime).
Luckily for the winter crop, the rust will die off as soon as the first frost comes by.
Fusarium, also a fungal disease tends to grow during wet periods. It’s possible to recognize fusarium when removing the plants (and you’ll see when you have to remove it, don’t worry). The bottom of the plants and the roots will have started rotting.
You can treat the plants. You can put them in a specific liquid before you plant them out. (that isn’t too organic). Maybe a good precaution would be not to crush the roots while transplanting the leeks. Also, make sure the plants have all the nutrition they need to grow and not get stunted.
Once again, crop rotation is really important here. Fusarium can build up in the soil when replanting members of the same family on the same spot.
Paper spot disease
Phytophthora porri or paper spot disease (once again a fungal disease) on leeks shows itself with dried out spots on the leaf. These spots tend to get so fragile that the leaf itself breaks over to the outside.
Once again, too much moisture is the damaging reason. Kind of special is the fact that it has something to do with the rain splashing on the ground and bouncing back up to the leaves. It’s not only the moist but more the rain that gives this disease a chance to grow.
So this is it for this article on growing onions, I hope you’ve found it interesting. If so, please share on social media, with friends, and other gardeners.
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Thanks for reading and see you in the next post.