Choose a well-drained soil, loose and rich in organic matter. Locate purchased transplants in early May in a bright sunny location. Set plants six (6) feet apart. Individual plants make an interesting addition to flower gardens.
The gray-green spiny foliage is prone to leaf spot and bacterial blights.
Don't expect good production unless plants are at least nine to twelve (9 to 12) months old. However, plants usually freeze out in Illinois. Overwintering as a houseplant isn't encouraged.
'Green Globe' is the most common cultivar on the market.
Articles in this collection were copyrighted 1995 by the Board of Trustees of the University of Illinois. For full copyright information about the articles in this encyclopedia, click here.