Terrace side pot design
I have a big terrace surrounded by pots as seen in the photo. Total length of the pot is around 15m. I am considering planting begonias this year from tubers.
- how many tubers will I need to have a good coverage
- when should I plant them, should I grow them a bit inside first? I live in London
- I can water them regularly but I cannot reach all the pots regularly. Is there going to be a problem to maintain?what type of begonias will keep flowering for longer and not too difficult to maintain in such pots