Alyssum

Alyssum (the oldest) does a mix of the two - she runs the store, clips/tends the flowers after Cornflower picks them from the garden and sees about purchasing seeds/fertilizer as needed and will probably have the most interaction with Bud business wise.

Shop - The Bouquet
Sign - A bouquet tied with ribbon with a cornflower, begonia and alyssum blossom.

Willow and Alyssum were really close as fillies and are still even though Willow is usually in Canterlot she visits almost every weekend to see her cousins and to pick up flowers.