Our square cards measure in at 150mm x150mm and come with an envelope to match.
The plantable hearts:
When the hearts are planted, the paper will compost away to leave only flowers. A mix of annuals to provide first year colour, as well as perennials, which will flower from year two.
The hearts can be potted indoors, and when the season is right and the seedlings established, transferred directly into the garden soil.
Instructions for planting provided.