Seeds Cardinal Climber vine, ipomoea multifida sloteri or Little Red Trumpet Vine. This annual vine has red star shaped blossoms on heavily foliaged vines. The hummingbirds love this one. In no time at all, this whispy vine can cover a vertical surface up to 20 feet. Very easy to grow in containers on a trellis, arbor or fence, This is also an excellent plant for the mailbox post also. Treat as an annual in full sun and average soil.