Free images results:

Tulip Bud pictures, stock photos and images


Tulip Stock Images
Author: Hixnhix
Tulip 4 Royalty Free Stock Photography
Author: Lleha
Flower Stock Image
Author: Ostenbaken

Also, here are some commercial RF-licensed images that match your search criteria:  
Tulip bud Royalty Free Stock Images
Author: Devonyu