Calla Lily Plants

Calla Lilies

Anonymous added on March 10, 2017 | Answered

I have had a water calla for so many years that I have a fair sized baby in a 5 gallon pail. It is better than the 3 foot wide original. I keep it in a small kidney shaped water garden in summer and, yes, there a few fish in the above ground pond. So my question is, why does the plant bloom in winter under lights? Too much nitrogen in late season or have I got a day light issue. I live in zone 4.

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Certified GKH Gardening Expert
Answered on March 10, 2017

As with most bulbs, Water Lily's bloom once a year. They need a cool winter dormancy of at least 8 weeks to reinitiate their flowering cycle.
Each plant should bloom for about 2 to 3 weeks.

If a Water Lily does not bloom outdoors in a pond situation it is generally, not warm enough, not enough sunlight, or lack of nutrition. They can be few a tablet fertilizer for Water Lilies.

Without the cold period and the addition of artificial lighting, your Lily is confused!

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