Loquat tree - no fruit

I've had a loquat tree for many years, it grew from a loquat stone my son planted when he was little. It has never given us fruit. Is there anything I could do so it gives us fruit?

 

Does it flower?

 

Alas no.

 

Ok, so obviously without flowers its never going to fruit.
How old is the tree, some trees can take quite a few years to flower for the first time when grown from seed.

 

Duh silly me. It's about 12 years old...or more!

 

TBH, I dont know how old they have to be,when grown from seed, to flower for the first time, its probably variable.

 

I've got two..the original grown from seed and it's offspring done from a cutting. The original took about 4 years to settle in but flowers reliably in November and December. Whether the fruit survives to maturity depends on how cold the winter is. The offspring is about 5 years old but has never had flowers or fruit.
Apart from giving it a feed of high potash fertiliser (high 'K' in the NPK ratio) there's not a lot you can do. Frosts in the flowering period mean few pollinators about as well as loss of the flowers themselves.