Please can anyone suggest a small tree, shrub (maybe 3'-4' ) to be grown in a container. I would like colour year round. The garden is south facing.. Thank you.
Do you like formal or informal? If formal you can grow box clipped into various shapes. If informal you can grow fuschias, some hardy some not, but they die down in winter. Or caryopteris, but again not in winter. You say all year round, so does that mean you would like it evergreen? Euonymus is evergreen, several varieties - look them up on Google. They can be kept trimmed, but some are fairly small anyway. If you want flowers then what about a rose. I have roses in large pots. I mixed well-rotted manure with earth and topped it up with compost but they still need feeding and watering. They've done very well. Another shrub I have is a dwarf rhododedron which is in acid compost. It has huge flowers in late spring and is evergreen the rest of the time.
I forgot to say that I underplant my potted roses with annuals in summer (like lobelias or surfinias that droop down the pot) and pansies or violas in winter, so the pots are never bare and empty when the roses are dormant.
If it is any help, the shrubs/trees I have in pots are hydgrangea, acers, pieris, rhododendron, camellia, roses, flowering cherry, lavender, conifers, a patio buddliea, fuschias, rosemary, etc.
Thanks for the ideas.