Quart plant Yellow Cape Honeysuckle Tecomaria capensis Lutea plant. This clinging vine can grow 40 inches that produces these sprays of butter yellow blossoms from late summer right on through early winter in my zone 8B and is hardy in zones 6 to 10. Very easy to grow and keep in bounds compared to other vines. Especially nice to grow over a trellis or privacy fence and will grow in full sun or part shade, producing more blossoms in full sun.