Past Plants of the Day forum: Daylily of the Day: Spiny Sea Urchin

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Name: Jon Whitinger
Jacksonville, TX (Zone 8a)
Hosted a Not-A-Raffle-Raffle Hybridizer Garden Photography Daylilies Region: Texas Celebrating Gardening: 2015
Forum moderator
Dec 10, 2015 6:01 PM CST

Plants Admin

Background history:

'Spiny Sea Urchin' is a semi-evergreen tetraploid introduced in 2003 by Stamile.

It has earned the following AHS awards:
Honorable Mention: 2007

This plant can be found in the ATP Plant Database at:
Daylily (Hemerocallis 'Spiny Sea Urchin') .

Please join in, if you own this plant! We would love to know more! I award an acorn for performance information posted to this thread.

Also, please consider adding a "Local Report" to the ATP Plant Database! Thank you!

Daylily (Hemerocallis 'Spiny Sea Urchin')
Name: Liz Quinn
Huntersville,NC (Zone 7a)
Region: North Carolina Cat Lover Dog Lover Daylilies Bee Lover Birds
Butterflies Composter Heucheras
Dec 10, 2015 6:13 PM CST
Spiney Sea Urchin took a while to adapt to my garden. Now it blooms great. The bloom is low in the foliage, but the color is beautiful. Love the look . We used to be Scuba divers so I have several ocean Daylily reminders.
What doesn't kill you makes you stronger .
Name: Cynthia (Cindy)
Melvindale, Mi (Zone 5b)
Hybridizer Irises Butterflies Charter ATP Member Birds Cat Lover
Region: United States of America Region: Michigan Vegetable Grower Daylilies Hummingbirder Heucheras
Dec 10, 2015 6:16 PM CST
This plant really struggles in my zone. I obtained it in 2010 as a single fan and it took 3 years to get 3 fans of it. I decided to send it south. Well, much to my surprise, I guess I didn't get all of it when I dug it out and it came back. I only have one fan and it is very small but I decided to give it another try. Hopefully it will bloom next year because I would like to use its pollen again since I did get one very nice toothy seedling from it.


Thumb of 2015-12-11/Hemlady/e7995a

Thumb of 2015-12-11/Hemlady/63c74a

Lighthouse Gardens
Name: Susiep
Wetumpka, AL (Zone 8a)
Daylilies Region: Alabama Vegetable Grower Cat Lover Frogs and Toads Pollen collector
Dec 11, 2015 11:47 AM CST
I got Spiny Sea Urchin earlier this year along with other plants. It has not done as well as some of the others. It seems to be struggling to adapt. If it doesn't come around next spring, it will have to find a new home.......
Coatesville IN (Zone 5b)
Daylilies Hummingbirder Lilies Region: Indiana Dog Lover Echinacea
Butterflies Birds Lover of wildlife (Raccoon badge) Garden Photography Garden Ideas: Level 2 Celebrating Gardening: 2015
Dec 11, 2015 9:18 PM CST
Someone was very generous and sent me a couple of fans a few years back. I loved it but after 2 years of struggling it finally vanished from my garden. I have been tempted to try it again but think it probably would have the same results.
Weeds are flowers too, once you get to know them. ~Eeyore
Name: Betty
MN zone 4
Frogs and Toads Birds Roses Region: United States of America Peonies Lover of wildlife (Black bear badge)
Lilies Irises Hummingbirder Hostas Garden Art Echinacea
Dec 11, 2015 9:50 PM CST
Struggles here in zone 4, would not try to grow in our cold zone.
If you want to be happy for a lifetime plant a garden!
Faith is the postage stamp on our prayers!
Betty MN Zone4 AHS member

Name: Louise Alley
Central Maine, Waterville (Zone 5a)
Dec 12, 2015 4:37 PM CST
I agree with Betty. The plant grows well, but a toothy flower seems very dependent on hot weather.
Name: Pat Strong
Stone Mountain (Zone 8a)
Region: Georgia Dragonflies Ponds Cut Flowers Dahlias Birds
Orchids Butterflies Garden Photography Houseplants Hummingbirder Daylilies
Dec 13, 2015 9:32 PM CST
I received Spiny Sea Urchin a couple of years ago from an ebay order. It did not bloom the first year. This year it bloomed and I loved it. The bloom was low in the foliage and mine did not reach the hybridizer's listed height, but maybe next year. I got at least 15 blooms and loved every one of them. I started out with 2 fans and it has increased to 4. I like it so much that I'm considering adding a few more fans this spring. This is what looked like in my garden...

[Last edited by Pat236 - Dec 13, 2015 9:38 PM (+)]
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Name: Becky
Sebastian, Florida (Zone 10a)
Celebrating Gardening: 2015 Daylilies Hummingbirder Butterflies Seed Starter Container Gardener
Charter ATP Member I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level Lover of wildlife (Black bear badge) Birds Ponds
Sep 30, 2016 3:41 PM CST
Acquired 3 fans of Spiny Sea Urchin in August 2015 that I potted up. I later transplanted into a new raised bed in October 2015.

It bloomed for me this year (July 22, 2016). It produce a scape from each fan. Unfortunately, the scapes each produced a whimpy 2 buds each. Confused The fans are small and tend to be prone to thrip damage and some rust damage. The blooms were small on short scapes. I would like to think that the stats will improve with time?

Here are the stats:

Thumb of 2016-09-30/beckygardener/4747e8

Blooms (it's definitely got some gnarly teeth on the blooms):

Thumb of 2016-09-30/beckygardener/7a88c4

Thumb of 2016-09-30/beckygardener/fb5009

And this is the whimpy fans. I am surprised it even produced scapes much less 2 blooms each. Geez!
Thumb of 2016-09-30/beckygardener/acad82

It is now Fall 2016 and the fans still look teeny and whimpy. BUT .... and this makes me laugh .... it now has increased to 3 small, pathetic fans!

But I do love the blooms despite it's poor foliage growth. Maybe it will have the last laugh and eventually turn into a vigorous clump with great foliage that is loaded with blooms?!!! Hilarious! Hilarious! Hilarious! Hilarious!
What lies behind us and what lies before us are tiny matters, compared to what lies within us.
Garden Rooms and Becky's Budget Garden
[Last edited by beckygardener - Sep 30, 2016 3:43 PM (+)]
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