Here what the LSU Ag guys say.
Mike

Here is a link that might be useful: LSU Ag / Loquats

Amanogawa,

I would agree with the information in the link BigEasyJock provides -- plant your loquat seeds immediately. If the seeds dry out, the plant embryos within will probably die.

Most of my loquat grafting attempts have been made with bud-shield grafts -- but I've gotten very low success rates using this method. Some suggest that it is better to employ whole-scion grafts (cleft or whip), using material from twig terminals -- and I think that I may try using this method more in the future. The one time I used it in the past, I got fairly good results.

My garden is full of Loquat trees, which I am using as underplanting to a deciduous hedge, which they will eventualy replace. I planted the seeds fresh from the fruit, directly into the ground, and they have grown relentlessly throughout the winter months. I have also grown them in pots, but had trouble transplanting them because of the large and brittle tap-root.

I have recently planted 49 seedlings, 42 fruits, and about 300 seeds. I have them all under the same conditions and will be monitoring them on a daily basis. This will be my first atempt for loquats, so hoefuly it will be a success. I will kep you posted on my progress. I can provide one good tip though. I have found that it is best to grow your specimens in the same environment that they will be planted in.

How long does it take before germinating? I want to grow more off of the one I have.

Our single tree drops its fruit and seedlings sprout naturally. We just ate a delicious loquat pie topped with whipped cream.

How long does it take for loquat seeds to sprout? I just planted some today.