Two of 2011 issues were released officially today, they were released on Decmber 2011 but due to annual stock checking at emirates post they were not put on sale untill today.
This is copy of the brochure (click on the image to view a larger size)
Release Date: 26/12/2012
Denominations --> AED 1 x 4 stamps, 150 Fils (AED1.50) x 2 stamps
Interested to know the winter plants? click on the below links
Tecomella undulata "el-ferfar"
Calligonum comosum "Arta"
Tribulus terrestris "el-Hasak"
Plantago amplexicaulis "Lsan el Hamal"
Rumex vesicarius - Bladder Dock "hummadh" or "Hummath"