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: wbm8@cornell.edu.

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Article References

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