Payment
Credit Cards
Credit card payments are processed by Paypal. Say what you will about Paypal, but it’s easy. You don’t have to have a Paypal account to order, just a debit or credit card. If you don’t have a Paypal account, still proceed with the Paypal option. You will be taken to a screen that has PayPal login information, but also a link for credit card payments. Click on the link in the bottom of the box that says “Pay with a debit or credit card, or Bill Me Later.” You will then be taken to a standard credit card processing screen and will not be required to create a Paypal account.
Bitcoin
I accept Bitcoin with a 5% discount, since there are no middle men taking their cut. When you choose to pay with Bitcoin, I will email you a Bitcoin address and you make the payment from your wallet.
Checks, Money Orders, and Cash
I am happy to take orders by mail as well. You can pay by check or money order made out to Cultivariable. It is best if you place the order online – there is an option for paying by check. If you just mail me a handwritten order, it increases the chances that I will screw it up. Checks may take several weeks to clear for some reason, even in the age of electronic banking. If you pay with a money order, please keep your receipt. If I don’t receive it and you don’t have the receipt, you can’t get your money back. While I won’t turn it down, I would really prefer that you do not send cash. The problem is that it sometimes disappears and then I am in the awkward position of having to tell you that I didn’t receive it. At the very least, please make sure that you get tracking if you send cash.
Send mail orders to:
Cultivariable PO Box 111 Moclips, WA 98562 USATrading
I like to trade, but most of the things that I am looking for are pretty obscure or rare. Of course, that works in your favor if you have something that I am interested in. You can see my trading wish list here:

I am trying to order some yacon tubers but am unable to obtain shipping fee for Newmarket, Ontario, Canada although I filled in the address. How can I proceed from here?
Sorry, we don’t ship to Canada.
do sweet potatoes have TPS also???
Yes, TSPS, in this case. I can’t really grow sweet potatoes in this climate, so it is not something I will probably ever offer. You can find some people working on sweet potato breeding at the Open Source Plant Breeding forum: http://opensourceplantbreeding.org/forum/index.php?board=11.0