Canary Creeper Nasturtium Seeds. A vigorous climber loaded with tons of yellow, 2-3 cm (1-1/2″) wide, nasturtium-like flowers all summer long. The flowers resemble a canary with wings spread wide during a landing hence the reference in its name. Try this unique flowering vine in the background behind rambling nasturtiums. Great for walls, fences and arbours where it can grow to its full 3 m (10′) in height. The plant grows best in full sun with light afternoon shade where summers are hot. When growing in garden soil, for best performace do not fertilize. However, plants grown in peat based medis should be fertilized.