Sold in 7cm pots.
Please note: these are plugs, which have just been potted into 7cm pots. The rootball is in a biodegradable corn starch netting. Please do not attempt to remove, as this can damage the roots. The roots will grow through the netting. 
Main picture is an example of what you will receive. Pictures 2-4 show our mature plant.
Large green, palmate leaves with red undersides / stems. Can grow to well over 3' / 1m in one season. Clusters of tiny white flowers are produced late summer / autumn.
Care requirements: Provide a free draining, moist soil and grow in partial shade - midday / afternoon sun will scorch its delicate leaves.
Tender - overwinter in a sheltered location above 5c when outside temperatures dip. These begonias do not appreciate a dry environment, so be sure to overwinter in a cool room without central heating. They can be placed outside on warmer days.