Tree grows but does not produce fruit

Question

I started another tree from seed of the 15 year old one I have and where the blossoms normally come I have thorns growing. I use the fruit to make marmalade

Answer 1

Depending on the age of this tree, it will not produce fruit for several years. When it is young it will have thorns to protect it to maturity. In 3 to 6 years, you can expect to see your first flowers and fruit.

This article will explain the thorns on citrus trees: https://www.gardeningknowhow.com/edible/fruits/citrus/thorns-on-citrus-trees.htm