Background history:

"Daylily (Hemerocallis lilioasphodelus)'' is a dormant diploid introduced in 1762 by Linn.

This plant can be found in the NGA Plant Database at:
Daylily (Hemerocallis lilioasphodelus) .

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Daylily (Hemerocallis lilioasphodelus)

Mine were sold to me as H. lilioasphodelus but the worry is the flower is more golden than light yellow. Basically, what are the actual species of Hemerocallis is a bit messy. I have seen an Asian guide somewhere that listed lilioasphodelus as lemon yellow to orange yellow.



Alas, humans have been involved in breeding daylilies for a very long time and comprehending the phenetics and genetics of true species is probably too difficult now with some species-groups.

Mine dies back in winter. It is usually my first daylily to open for the flowering season in August (end of winter - I am Southern Hemisphere). It reblooms throughout the season. The funnel-shaped flowers open in the afternoon and stay open overnight and into the next day. It is diploid, pod and pollen fertile.

It is quite fragrant but, needless to say, it is a rust bucket.

Easy to grow and a simple bright yellow flower are positives in my book! The first Daylily to bloom in my garden, grassy foliage that steadily increases, and a citrus fragrance. Here it is blooming this morning in the perennial bed next to my patio.

Valuable for its earliness and fragrance. Unfortunately as Gleni says, a rust bucket. In my rust experiments I used selfed seedlings of lilioasphodelus (syn flava) to keep the rust alive through winter in the house because they were so susceptible. An interesting feature of lilioasphodelus is the partially fasciated appearing scape.

The plant I have as lilioasphodelus spreads aggressively. It tries to flower too early for this location as its scapes are nearly always destroyed by late frosts. I rarely see even one flower.

I got lilioasphodelus in the fall of 2017 and have it planted in a holding area so I check how quickly it will spread. So far it has not increased much at all. I will be moving it after it blooms this spring. The blooms are extended. A single flower will stay open for 2 to 3 days. It is by far the most fragrant of any daylily I have. Mine is a nice sunny yellow. Its just now starting to put up its leaves.