Papaya Tree has them. Probably very good condition and not cheap.
I have 3 seedlings that I can share one if you want. They're not the good kind so you'll have to graft later.

I bought my Indian variety seeds from the same company. But there are soap berries native to the US. Like these...
http://www.tradewindsfruitstore.com/servlet/the-Tropical-Fruit-cln-Tropical-Fruit-S-dsh-Z/Categories

Seedlings are supposed to take as long as 10 years to bear fruit and can grow to 20 meters. I started them as soon as I could get some seeds. I hear the Chinese variety is more compact. If you know of a source, airlayering should work.

I don't know how good these are compared to laundry detergents since I'm not picky about ending up with the right shade of white. I put some in a cloth bag into a mug and pour hot water into it just a little before doing laundry. Just shake thing around a little and pour into the machine.

I try to make the rootstock happy before grafting and don't do anything special after. I tend to under fertilize everything anyway. It's hard to remember to fertilize.

The potential problem of removing all wood from the bud is weakening it when inserting into the T. Otherwise it's a good idea.

Behl, you're doing it right. Pollen from a pollinated flower is still viable.

The only reason to go through the trouble of collecting female stage pollen is if you don't find a male. Also female stage pollen lasts 3 days instead of 1. I don't know why that is, but say you have 2 females (A and B) on day 0. You take A pollen on day 0 and B pollen on day 1, B pollen will be good until day 2 while A pollen will be good until day 3.

Maybe pollen ages faster on the flower.

There was a trial conducted by a grower who discovered this if you can find the slides online.

ohiojay, did you know about the female stage pollen of cherimoya? I'm sure there are slides online somewhere. Basically you pick the flower in the female stage and scrape the pollen off and it lasts up to 72 hours. Male stage pollen only lasts 24 hours.

Do you make these shelters instead of hardening plants in their pots or in addition to that?

Yes I think they may not like too much water. One of mine planted next to the lawn turned yellow and died, another one planted in the corner is turning yellow and going too. Even in Southern California white sapote shouldn't be watered too much. They are pretty drought-tolerant and can grow on a sandy hillside.
Now I have only 2 large seedlings and one fruiting store-bought tree remaining.

Simon, are the ones in San Diego able to be germinated?

If your plan is to prune it back hard then definitely don't prune it until it's finished for the season and stored all the starches it can from the leaves. You don't want to be in the situation of taking out half the height if a weakened tree.

Really nice yangmeis you have there. Mine are still very far behind.

Thanks for the heads up. My Walmart (Covina) has peat 2.5cu ft for $10 and the pine bark fines is sold as soil improvement amendment for $3.

Too bad I don't live in San Diego anymore. Their free compost program for local residents is great. Also the mushroom growing facilities give away their waste mushroom compost. Mushrooms consume cellulose fiber, leaving nitrogen and chitin fiber.

Rodney, Are those from OC Scion exchange this year? Mine were growing leaves but some died on me too.

Are Morus alba supposed to be harder to root than the nigra? I have a pakistani from burying a cutting last year. I didn't try too hard and didn't keep stats.