Need more information. Where are you growing them? Have you check the roots - have any? We received in 800 plumeria segments last Fall knowing they will take a few months to take hold. We grow in South Florida (Tropical) so our growing environment is different that any other in the continental USA. ...

Excess rain is not a problem with cactus its the soil and containers. We grow all type of cactus and succulents. Like the Philippines we get tons of rain from June through most of October. It is not unusual to get downpours of several inches daily. Its always wet hot and humid during the raining sea...

AdeniumRose Company has a great variety of desert rose plants (Adeniums) including seedlings, some unusual optunia (prickly pear), and other cactus plants. They ship through out the USA and located in Miami Florida.
http://www.adeniumrose.com