Trumpet Vine Seed Pods Poisonous. Seed can be sown in potting soil and chilled in a refrigerator or stored in a plastic bag in a refrigerator for sowing outdoors in spring. Homegrown trumpet vine seeds, seeds, grandiflora trumpet vine (25) 3.4 out of 5 stars13 $5.15$5.15.
Trumpet vine produces blooms on new wood, so you can prune it in spring without fear of destroying the flowers. Trumpet vine spreads through underground runners, as well as seed. Trumpet vines (campsis radicans) have beautiful orange flowers that attract hummingbirds, but the vines leaves turn yellow in fall.
Using aerial rootlets, it climbs trees about as fast as fighting squirrels, and ascends 40 feet or more.
I have one plant that covers most of my house's south wall. Using aerial rootlets, it climbs trees about as fast as fighting squirrels, and ascends 40 feet or more. The seeds are brown, hairy pods. It is critical that there be a sturdy support structure for this vine, as it can overwhelm.