The fastest way to get Oleander is to make the soup yourself. You must follow explicit instructions and make absolutely sure that the plant in question has not been sprayed with any pesticides. Below are the links with instructions on how to make Oleander Soup:
The Recipe for Oleander Soup Part 1
The Recipe for Oleander Soup Part 2 - Tips and Advice
I would not recommend making a tea from Oleander, as it is a highly toxic plant. It loses its toxicity when made into an extract per the directions in the link above.
Warm regards,
Luella
Oh. You may want to check with online nurseries. Make sure they are organic.
Frankly, in the long run, waiting for your Sutherlandia OPC order may be your quickest option.
Luella