Flowering control of recently introduced F1-hybrid cultivars of Godetia

Abraham H. Halevy*, David Weiss

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Clarkia amoena, commonly known as Godetia, is a well-known garden plant. The recent introduction of F1-hybrid cultivars of this plant have greatly increased its value as a source of cut flowers. The plant was found to be sensitive to high temperatures. At 24°C and higher the plants died after a few weeks of growth, before flower bud formation. At 20-24°C Godetia behaved as a neutral-day plant, initiating flowers under both long-day (LD) and short-day (SD) conditions. At lower temperatures, however, it behaved as an absolute LD plant. Both flower initiation and development were enhanced under LD conditions. Plants grown under LD conditions (natural winter SD plus supplementary photoperiodic light) produced flowering stems of superior quality: the stems were much longer and the flowers were concentrated at the top of the stems, not along the shoot as in SD plants.

Original languageAmerican English
Pages (from-to)295-299
Number of pages5
JournalScientia Horticulturae
Issue number3-4
StatePublished - Apr 1991


  • Clarkia amoena
  • Godetia
  • flowering
  • photoperiod
  • temperature


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