They cannot stay in the ground like carrots, but do very well dehydrated or blanched and then frozen.
What are best soil conditions for onions and leeks?
They prefer to be planted in loose, fertile (organic or compost enriched), well-draining soil.
We planted leeks this spring and they aren't large enough to harvest. They have not produced seeds. Can the plants be left in the ground and will they grow to maturity next season? Thank you.
The following articles should answer your questions: https://www.gardeningknowhow.com/edible/vegetables/leeks/how-to-grow-leeks-and-tips-for-harvesting-leeks.htm
https://www.gardeningknowhow.com/edible/vegetables/leeks/leeks-bolting.htm
https://www.gardeningknowhow.com/edible/vegetables/leeks/how-to-harvest-leeks.htm
All my leeks have gone soft so when you touch them they disintegrate - all ruined.
Are the roots still intact? If not, there is obviously a problem. Something is probably eating the roots, or there could be a pathogen in the soil. This article might help: https://www.gardeningknowhow.com/edible/vegetables/leeks/how-to-harvest-leeks.htm
Could you please guide me on how to grow coriander herbs and leeks at home?
These articles should be of some help to you: https://www.gardeningknowhow.com/edible/herbs/cilantro/growing-coriander-seeds.htm, https://www.gardeningknowhow.com/edible/vegetables/leeks/how-to-grow-leeks-and-tips-for-harvesting-leeks.htm
Something is growing in my garden pot that I forgot I had planted. Now I'm not sure whether it's edible. It smells like a scallion and has long shoots with clusters of 8 or so white flowers growing from the plants. How can I be sure that it's edible?
I believe this to be leeks. The flat leaf would be the identifier.
Does that refresh you memory of what you may have planted?
Here is a few articles about Leeks--personally one of my favorites!
https://www.gardeningknowhow.com/edible/vegetables/leeks/reasons-why-leeks-too-thin.htm
https://www.gardeningknowhow.com/edible/vegetables/leeks/leeks-bolting.htm
Can you tell me what worm likes to eat leeks? The one I have is black with a reddish brown head.
While it's difficult to say for certain, as many worms could be the culprit, I am leaning towards the black cutworm. You can try treating the soil with Bt, neem oil or even beneficial nematodes.
Here is more information: https://www.gardeningknowhow.com/plant-problems/pests/insects/get-rid-cutworms.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/using-bacillus-thuringiensis.htm
https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm
https://www.gardeningknowhow.com/garden-how-to/beneficial/nematodes-as-pest-control.htm