I am fond of many australian plants as some of them are very drought tolerant. Trying to grow them from seeds include hardenbergia climber. Indigo is another one. I am also trying to grow hibbertia scandens but it may need stratification. Pandorea Jasm. is my favorite climber very heat tolerant. There are some scented shrubs from australia not coming to my mind right now.
Their climatic conditions replicate ours. Do one thing go to their down loads section. There you will find videos in WMV and MP4 format. They are very instructive/informative in new trends and do open out the visions of what can be done in Pakistan if we set our hearts on it. Regards.