More than 2,000 visitors to RHS Garden Wisley voted in a poll to name their favourite begonia as part of the charity's People's Choice initiative.
Visitors were invited to vote for their favourite in three categories: Begonia Semperflorens Cultorum Group planted in borders, Begonia x tuberhybrida planted in borders, and begonias planted in containers and hanging baskets.
The winner of category one was Begonia ‘Volumia Rose Bicolour'. Begonia ‘Heaven Red' and Begonia Whopper Series with green leaf were placed in second and third positions.
In the second category (Begonia x tuberhybrida planted in a border), visitors voted Begonia ‘Nonstop Golden Orange' as their favourite.
Begonia x tuberhybrida Nonstop Series was bred by Friedrich Benary. ‘Nonstop Golden Orange' was first made available to the public in 1971.
Begonia ‘Nonstop Yellow' and Begonia ‘Nonstop Appleblossom' were named second and third favourites in this category.
The winner of the third category (begonia in a patio container or hanging basket) was Begonia ‘Peardrop', bred by UK breeder Dennis Need.
Begonia ‘Angel Falls White Blush' (Waterfalls Series) was named runner-up, while Begonia ‘Cottage Bright Red' came in third.
RHS trials development manager Mark Heath said: "Begonias are wonderfully versatile plants that can sometimes get overlooked and may be undervalued. That's why the RHS, breeders and growers wanted to celebrate their qualities and encourage visitors to take the time to marvel at these wonderful plants."