Freesia Responds to Preplant Flurprimidol and Paclobutrazol Corm Soaks

in HortScience

Experiments conducted over 3 years have indicated the efficacy of preplant paclobutrazol or flurprimidol corm soaks for leaf and scape growth control in potted freesia (Freesia hybrida). A range of cultivars subjected to 30- to 60-min soaks in 60 to 120 mg·L−1 paclobutrazol and 10- to 30-min soaks in 10 to 30 mg·L−1 flurprimidol resulted in significant and commercially relevant height control without reducing the number of flowering scapes. Cultivars varied in their response to the plant growth regulators (PGRs), suggesting that individual grower trials will be necessary to develop an optimum treatment for each location.

Contributor Notes

I gratefully acknowledge Amanda van den Bosch and Roos de Wit (Dutch interns) and Allison Hrycik (Cornell student) for their assistance with these experiments.

Corresponding author. E-mail:

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  • BerghoefJ.ZevenbergenA.P.1990The effect of precooling, environmental factors and growth-regulating substances on plant height of Freesia as a pot plantActa Hort.266251257

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    • Export Citation
  • CavinsT.J.EricksonP.I.2004Freesia response to flurprimidol corm soaksHortScience39664

  • De HertoghA.A.1996Holland bulb forcer’s guide. Alkemade Printing BV Lisse The Netherlands

  • De HertoghA.A.MilksR.1990Forcing Dutch-grown freesias as potted plants in the U.S. and CanadaActa Hort.266115122

  • GianfagnaT.J.WulsterG.J.1986Growth retardants as an aid to adapting Freesia to pot cultureHortScience21263264

  • WulsterG.J.CartwrightS.GianfagnaT.J.1989The effects of greenhouse temperature and ancymidol concentration on height and flowering time of Freesia hybrid grown as a container plantActa Hort.25297103

    • Search Google Scholar
    • Export Citation
  • WulsterG.J.GianfagnaT.J.1991Freesia hybrida respond to ancymidol, cold storage of corms, and greenhouse temperaturesHortScience2612761278

    • Search Google Scholar
    • Export Citation

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