Daylily (Hemerocallis 'Dr John Black') in the Daylilies Database

Data specific to Daylilies (Edit)
AHS link: AHS Daylily Cultivar Info
Hybridizer: Mrak
Year of Registration or Introduction: 1998
Foliage type: Semi-evergreen
Scape height: 25 inches
Bloom size: 5 inches
Bloom time: Midseason
Plant Traits: Diurnal
Bloom Traits: Self
Bloom Form: Single
Color description: very dark purple black self with yellow green throat

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Flowers: Showy
Propagation: Seeds: Will not come true from seed
Propagation: Other methods: Division
Ploidy: Diploid

Discussion Threads about this plant
Thread Title Last Reply Replies
July 2020 blooms by Jillz Sep 13, 2020 1:49 PM 603
Show us your PODS by petruske Oct 25, 2019 10:54 AM 45
Clump Shots 2019 by Seedfork Feb 17, 2020 9:52 AM 578
Favorite daylily pics to help us thru winter by bluegrassmom Mar 5, 2020 8:32 PM 915
How Many Here Buy Daylily Seeds on the LA and Grow Them? by kousa Nov 22, 2020 4:31 PM 180
July 2018 Blooms by Jillz Aug 11, 2018 5:23 PM 525
What are you ordering for 2018? by Betja Sep 4, 2018 9:02 AM 1,021
8th Daylily of the Day Poll (Closed) by beckygardener Aug 13, 2017 6:08 AM 11
June 2017 Blooms by Altheabyanothername Aug 10, 2017 11:40 PM 645
Daylily Clump photos by Seedfork Sep 21, 2017 8:09 PM 354
2017 Daylily Orders Recieved by spunky1 Nov 1, 2017 6:17 PM 339
What are YOU adding for 2017!!! by Nysbadmk8 Oct 13, 2017 9:27 AM 1,374
Fourth Daylily of the Day Poll ..... by beckygardener Aug 1, 2016 9:09 AM 60
June Blooms 2016 by JWWC Jul 1, 2016 12:06 PM 758
Pics of poly blooms by GDJCB Sep 26, 2017 1:10 PM 448
What are you adding for 2016? by JWWC Oct 19, 2016 8:42 PM 676
Second Daylily of the Day cultivar poll by beckygardener Nov 1, 2015 5:43 AM 42
Daylily Alphabet.... Show Us Your "D's" by Hemlady Nov 26, 2020 5:54 AM 175
(Closed) Weather in your garden~Winter 2015 by Sharon Mar 21, 2015 12:04 AM 1,593
June 2014 Blooms by Seedfork Jul 2, 2014 6:59 PM 675

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