R168 Burr. Stefan Isler '20'

General Requirements
Temperature         55 - 85 Degrees Farenheit
Humidity               50% - 80%
Light                     3000 foot candles
Balanced fertilizer (6N-2P-4K-2Ca-1Mg) @ 100-150ppm of nitrogen
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Burr. Stefan Isler '20' Three foot tall branching sprays of red and orange flowers. This plant has been a mainstay in Europe for many years. I consider this an intermediate grower, but some in Florida have done well enough to order it a second time.