In the August 30 Post at The Transplantable Rose you saw several photos that reversed from landscape to portrait when uploaded to blogger.
Our technical support person suggested that I save the problem photos as a png file and then try to upload them again. I used Adobe Photoshop Elements to save them in the new format and them uploaded them over here.
The zinnias came out in the right direction.
And so did the Cherry pepper photo. The size of the photo is slightly larger than a jpg. It doesn't explain what happened but it might work as a fix.
EDIT July 4, 2010:
In the comments I said "Tech support thinks that blogger is reading some embedded information incorrectly". This theory seems to have been true - my husband disabled a facial-recognition setting inside the camera that autorotated pictures to make faces look "right". Guess it was seeing fruits and flowers as faces in group photos. Human faces are longer rather than wider, but Flower Faces frequently are broader rather than long.
So far it's worked!