Canna Lilies

Canna Lilies Will Not Grow

weatherman added on August 6, 2016 | Answered

I have been growing canna lilies in the same spot with full sun for many years and have had good results. I live about 25 miles south of San Francisco in a fairly cool climate. But for the past two years, the cannas have hardly grown at all, and I have had almost no blooms. They have not died, but they just sit there. They get watered and fertilized fairly regularly, the same way I have been doing it for years. Any ideas why they are not growing and what I can do to fix it? Thank you.... Dave C.

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Certified GKH Gardening Expert
Answered on August 8, 2016

Regular watering and applying a thin layer of hardwood mulch can help with moisture control, especially in warmer climates.
You mention fertilizer; You can use a light balanced fertilizer once a month during the growing season, starting right before the flowers bloom. Over fertilizing or using too high of a nitrogen formulation will actually inhibit flowering.

You can have a soil test done to determine the soil nutrients and determine if you need further soil amending.

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