Q.leeks
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