Dahlia 'Hap' in the Dahlias Database

Data specific to Dahlias (Edit)
Size: Giant (AA): over 10 inches in diameter.
Form: Semi-Cactus (SC)
Color: Yellow (Y)
Year Introduced: 1980
Country of Origin: United States
Hybridizer or Originator: Robuck
ADS Classification Code: 202

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Minimum cold hardiness: Zone 8a -12.2 °C (10 °F) to -9.4 °C (15 °F)
Flowers: Showy
Resistances: Deer Resistant
Propagation: Seeds: Days to germinate: 7-21
Depth to plant seed: 1/4 inch
Start indoors
Can handle transplanting
Propagation: Other methods: Cuttings: Leaf
Division
Other: Propagate by taking cuttings of newly emerged shoots
Containers: Suitable in 3 gallon or larger

Celebrating Dahlias!Celebrating Dahlias!
September 26, 2015

We open the Dahlias Celebration Week with a look at the top cultivars, top comments, most thumbed images, and more!

(Full article17 comments)
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Discussion Threads about this plant
Thread Title Last Reply Replies
Stem Shriveled/Collapsed on Itself by ErinGerg May 22, 2018 10:39 AM 5
flowers covered by foliage by pinkruffles Apr 27, 2018 7:39 PM 2
Last man standing, 2018 by frankrichards16 Apr 19, 2018 12:21 PM 1
Staking Dahlias by MargieNY Mar 5, 2018 10:40 AM 56
Need help with gifted dahlia by MargieNY Feb 10, 2018 5:11 PM 20
Good supplier for latest introductions? by frankrichards16 Dec 28, 2017 6:55 PM 4
Merry Christmas to all dahlia lovers by Oberon46 Dec 24, 2017 9:00 PM 3
determining viability of tubers in the spring by PuzzlerBob Nov 30, 2017 6:13 PM 11
2018 Dahlias by frankrichards16 Aug 17, 2018 10:17 AM 436
Tree Dahlias and hybrid tree dahlias... anyone? by muffin Jan 12, 2018 11:21 PM 4
Small dahlias by frankrichards16 Oct 31, 2017 9:55 AM 10
It's about that time... by frankrichards16 Nov 8, 2017 9:11 PM 48
If you were to choose just 3 of your Favorite, what would they be? by islander Jun 4, 2017 8:33 AM 17
Get ready, set, START! by CLC70 Jun 11, 2017 8:29 PM 168
dahlias by paulaf Feb 11, 2017 10:23 AM 2
Dahlias 2017 by Oberon46 Dec 1, 2017 8:10 PM 652
Storing your dahlias. How do you do it? by CLC70 Nov 2, 2016 6:36 PM 15
Please Help With Dahlias Problems by kousa Aug 29, 2016 5:51 AM 14
Can anyone help with id'ing this dahlia please by signet Oct 29, 2016 8:16 PM 7
2016 Blooms by mandolls Feb 18, 2017 6:16 PM 588

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