The Q&A Archives: Spindly Potato Tree

Question: I just bought a potato tree that is quite spindly and needs pruning. How far back should I prune it, and how do I get it fuller, with lots of flowers?

Answer: Solanum Rantonnetii 'Grandiflorum', the Blue Potato Bush, is probably what you're growing. It's sometimes classified as Lycianthes rantonnei, or Paraguay Nightshade. It's generally grown as a shrub but can be staked into a tree form. It's evergreen in mild winters, deciduous in colder areas. The bright green oval leaves are about 4" long and the plant is covered with violet blue, yellow-centered, one inch wide flowers throughout the warm months.

You can prune the branches back by about one-third this winter, or very early next spring to encourage new flowering wood.

« Click to go to the homepage

» Ask a question of your own

Q&A Library Searching Tips

  • When singular and plural spellings differ, as in peony and peonies, try both.
  • Search terms are not case sensitive.

Today's site banner is by dirtdorphins and is called "sunset on summer"