All Seedlings greeting cards have a PLANTABLE seed paper envelope which is embedded with non-invasive wildflower seeds. This seed paper is made of a biodegradable eco-paper created with post-consumer materials - no trees harmed for this paper! When planted, our envelopes compost away leaving only flowers behind. DETAILS Sku:BOU88551 PLANTABLE ENVELOPE Blank inside Size: A2 folded 4.25” x 5.5” Printing: flat + foil stamping Envelope: seed paper Made in the U.S.A.