we have the honeylocust ( african acacia), locally there is the spanish broom (spartium junceum), lavandin & eleagnus is doing very well! As herb is absynth growing as mad. Very good to chop & drop. Is tagaste frost resistent? We have ziziphus growing. Lantana looks very beautiful need to do some research on that. Jathropa seems also a very interesting plant, again if it's frost-resistant. Same for calotropis and myoporum. We also grow agnus castus & cotinus coggyria. I will do my best to write about it and bring some photos! thank you for your reply, I love to learn more!