djinnevada said:Another newbie question -
I've seen people say that certain daylilies won't grow in their area because they're evergreen. How does that work? I bought some of every type, just wondering now if I should have been more careful.
Flowersgalore said:The people I buy daylilies from say a dormant daylily needs a period of dormancy to thrive....to grow, bloom and and multiply.
This is a common belief.
I have looked at research on daylilies and I tested this belief over a number of winters.
Daylilies that go dormant for winter under natural conditions do NOT need a period of dormancy to grow, to bloom or to multiply. I have tested several registered dormant daylilies. Of course I cannot test thousands of dormant cultivars but none that I have tested needed a dormant period for any reason.
The most recent test I have made is with 'Stella de Oro'. I brought 11 Stella plants (most were single fans) inside in September of 2019. They had last experienced a dormant period during the winter of Dec. 2018/Jan 2019. So far they have increased to more than 250 fans (59 fans in 15 clumps that were countable, estimated more than an average of 20 fans in each of 12 clumps with too many fans to count individually). I have had to divide and re-pot many of the clumps formed by the fans twice so far and will probably do so again this week.
Each of the 11 plants had bloomed once outside before September of 2019 (they were in a very large clump that had not been fertilized or watered for years and barely flowered). They have rebloomed a maximum of a further five times inside since then and are still going strong and will continue to do so for as long as I am willing to grow them inside. They have not experienced temperatures below 16C (61F) at night or below 19C (66F) during the day inside. They have not noticeably gone dormant.
Researchers tested six daylily cultivars, one of which was 'Stella de Oro'. They did not need to go dormant to flower nor did they need to experience cold temperatures to flower.