Hi Henk
First I will ask you to open your rejection notice that comes with the image in question, and follow as you read through this post.
Submission rejected for similar is not based on adobe stock, but based on what you upload – all of what you upload, apparently even those that were rejected for other reasons. Also it would appear, the system adobe uses “flag” the image that it recognizes another of. It is then left to the moderator to check and decide if that image should be approved or reject. Therefore it is very important to do all you can to make sure that your images are “flawless before uploading” to avoid the disappointment of the software recognizing that you upload another like it, make the necessary correction to re-upload that which was rejected – hopefully that works to your advantage.
Another thing that is taken in consideration is color – “We can’t accept more than three color variations of the same image or similar images…”. If you always upload all green trees, then after three uploads it is quite likely you’ll start getting similarity rejections. Therefore, I’d suggest you find variables to upload with your tree images – fruits, animal, bird, whatever that would make the apple tree having significant difference from the pear tree, if I should use that as an example – “Image must be different enough to provide additional value to our customers”. Therefore there must be significant difference. What I understand from that is that you can upload all the trees in the world if all the images with trees looks significantly different. Try to do that and see how many trees you can upload.
If you read through all the rejection notice, you’ll see it does not just apply to trees, flowers, pets, and so on that are common; it applies to everything even the rarest of images that you upload more than three of the same and each do not have significant difference.
I hope you find this helpful. And please avoid re-uploading images without correction, or images rejected for similar.
Also continue to tag your images with scientific names. Additionally, common names are also important.
Regards
JG