Abstract: In a method and apparatus for packaging a horticultural product, especially cut flowers, for transportation, one or more stems are inserted through a flexible foam block formed from a low density, low compression force material disposed in an opening of container such that the foam is compressed. The compression of the foam forms a water-tight seal around each stem to prevent water or other liquid inside the container from leaking during shipment of the horticultural product and insulates each stem from each other stem.