Ask Mr. Smarty Plants

We're always pleased to hear from gardeners on another continent but, unfortunately, we can't help you, or at least not much. The Lady Bird Johnson Wildflower Center in Austin, Texas, and home of Mr. Smarty Plants, is committed to the care, protection and propagation of plants native not only to North America but to the area in which they are being grown. The Solandra nitida, also called Cup of Gold Vine or Chalice Vine, is native to Mexico, Central America and South America. Plants from those areas do not appear in our Native Plant Database and are out of our range of expertise.  We did find this website from Top Tropicals that has some information.  It is hardy to USDA Plant Hardiness Zones 10 to 11, which means in areas which have an annual average minimum temperature of 30 to above 40 deg. F. The very southern tips of Texas, Florida and California might accommodate it, or it would have to be brought in as an indoor plant in cool weather. We understand it also grows in Hawaii, which is almost overrun with non-native plants, and it can apparently be quite invasive if it is growing in ideal conditions for it. You might try the UBC Botanical Forum, which caters to plant questions from around the world.

Pictures of Solandra nitida from Google.