Answer: Solanum rantonnetii 'Royal Robe' is a medium-size evergreen shrub with numerous slender arching stems (and is sometimes trained into a tree or topiary form. It displays masses of large, fragrant, rich blue-violet flowers with yellow centers over long season. Provide regular water during the growing season and full sun. It's a fast-growing plant to 6 to 8 feet high, with equal width. After the plant is established, you only need to water occasionally, during the hottest months of the summer. Feed with a general purpose fertilizer before new growth begins in spring. Prune semi-annually to maintain form and encourage flowering. Following the above guidelines should produce beautiful blooms throughout the growing season. Enjoy!
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