What can I plant in containers on roof terrace...?
I have a North facing roof terrace with 3 large containers. I wanted screening and evergreen so opted for bamboo. It grew very well - over 10 feet tall - until I went away and the automatic watering system failed. One of the containers has died. I would like to replace them all with something else that is evergreen, easy to look after and would grow quite tall. Bamboo not option again as leaf fall is very hard to collect with the pebble borders. Any ideas please?!