Clematis 'Jackmanii' in the Clematis Database

4 companies sell this plant

Data specific to Clematis (Edit)
Raised by: George Jackman
Country of Origin: England
Growing Zones: USDA Zone 4
USDA Zone 5
USDA Zone 6
USDA Zone 7
USDA Zone 8
USDA Zone 9
USDA Zone 10
USDA Zone 11
Plant Group: Jackmanii
Typical Plant Size: Typically 10 to 15 feet
Pruning Group: Group 3 - Hard pruning recommended in early spring
Bloom Diameter: Medium - between 4 to 6 inches
Bloom Color (Tepals): Deep Purple hue
Center Color (Anthers): Cream/White anthers
Bloom Shape: Single
Preferred Light: Tolerates partial shade
Prefers full sun
Moisture Requirements: Average moisture requirements
Additional Information: Free-flowering (very floriferous)
Recommendations: Good choice for beginners (easy to grow)
Good choice for shaded areas or northern walls
Good choice for hot climates
Awards: Royal Horticultural Society Award of Garden Merit

General Plant Information (Edit)
Plant Habit: Vine
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)
Maximum recommended zone: Zone 11
Plant Height: 10-15 feet
Leaves: Deciduous
Flowers: Showy
Flower Color: Purple
Flower Time: Summer
Late summer or early fall
Resistances: Deer Resistant
Child plants: 2 child plants

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The Top ClematisesThe Top Clematises
June 6, 2015

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

(Full article19 comments)
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Photo gallery:
Location: My Garden, Arvada, ColoradoDate: 2008-07-11
By tabby
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By victor
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By Cat
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Location: My gardenDate: 2018-06-10
By Calif_Sue
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Location: Western NCDate: May 22, 2014
By vic
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Location: My gardenDate: 2016-04-26
By Calif_Sue
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By Seedsower
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Location: My GardensDate: June 19, 2013Close-Up View
By TBGDN
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Date: 2015-05-26
By Paul2032
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Date: 2015-06-09
By Paul2032
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Location: My gardenDate: 2016-05-08
By Calif_Sue
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Location: Lincoln NE zone 5Date: 2018-06-08KODAK Digital Still Camera
By stilldew
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Location: West Valley City, UT
By Zencat
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Date: 2018-07-02
By Lucichar
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Location: Cedarhome, WashingtonDate: 2009-07-12
By Bonehead
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Location: In my yard in Holladay, UT
By Natalie
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Location: Backing up to 3 of the compost piles.Date: 2005-0803At this point it's so huge it has to get cut back.
By pirl
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Location: Backing up to 3 of the compost piles.Date: 2011-0702
By pirl
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Location: Harper post, full sunDate: 2013-0317Starting grow - see the leaf buds?
By pirl
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Location: My GardensDate: June 18, 2014A Single Bloom
By TBGDN
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Location: central IllinoisDate: 2014-08-16
By jmorth
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Location: Terrace garden left side.Date: 2012-0622Shown with sedum Angelina.
By pirl
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Location: West Valley City, UT
By Zencat
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Location: West Valley City, UT
By Zencat
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Date: 2005-06-07Credit Biraalo
By admin
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Location: Greenwood, MNDate: 2014-07-16
By nben
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Location: Smithfield, KYDate: 2008-06-13jackmanii with zephirine drouhin rose
By Anndixon
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Location: My backyard in Allentown, PADate: 29 October 2106Jack is still trying to produce flowers in late October.
By marsrover
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Location: My backyard in Allentown, PADate: 9 November 2016Jack, still working into November, producing a flower on a damp d
By marsrover
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Photo Courtesy of Homestead Farms Nursery. Used with Permission.
By Joy
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Location: My GardensDate: June 19, 2013Growing On Wire Fence
By TBGDN
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Location: Backing up to 3 of the compost piles.Date: 2006-0701Just one of very many blooms.
By pirl
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Location: Backing up to 3 of the compost piles.Date: 2006-0525It was cut back to the ground in April and here you can see how m
By pirl
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Location: Backing up to 3 of the compost piles.Date: 2006-0412It's obviously time to cut it back...about two months late.
By pirl
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Location: Backing up to 3 of the compost piles.Date: 2013-0713
By pirl
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Location: Harper post, full sunDate: 2013-0529I did mention it loves to invade the lantern, right?
By pirl
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Location: Harper post, full sunDate: 2013-0513As it was preparing to invade the lantern, which is does too ofte
By pirl
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Location: Harper post, full sunDate: 2013-0623In full bloom after having been cut back hard a few weeks previou
By pirl
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Location: central IllinoisDate: 2014-08-16
By jmorth
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Location: central IllinoisDate: 2014-08-16
By jmorth
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Location: central IllinoisDate: 2015-06-12
By jmorth
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Location: central IllinoisDate: 2015-06-12
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Location: central IllinoisDate: 2015-06-12
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Location: central IllinoisDate: 2015-06-12
By jmorth
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Location: West Valley City, UT
By Zencat
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Location: central IllinoisDate: 2015-10-13
By jmorth
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Location: Missouri Botanical Garden (Mobot) in St LouisDate: 2016-06-18
By jmorth
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Location: Kenmore, NY  Date: 6-29-2016
By smiley
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Location: West Valley City, UTDate: 2017-06-05
By Zencat
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Location: West Valley City, UTDate: 2017-06-22
By Zencat
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Comments:
Posted by goldfinch4 (Ripon, Wisconsin) on Dec 19, 2011 3:23 AM

Jackmanii was the first of the modern hybrid large-flowered clematis to be grown in gardens and it continues to be very popular today. Many sources list it as hardy to zone 4, but in a more protected location it has been known to be hardy to zone 3. Since it gets so large, a sturdy support or trellis will be needed. It will tolerate being planted close to black walnut trees. Does not do well in heavy clay soils.

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Posted by Mindy03 (Delta KY) on May 9, 2012 3:20 PM

Honey bees get white or cream pollen from this plant.

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Plant Events from our members
piksihk On April 11, 2016 Bloomed
Catmint20906 On May 28, 2015 Bloomed
LlamaLlori On May 29, 2015 Bloomed
Is beginning to bloom, 'tan bella'
MissMew On March 26, 1993 Obtained plant
In the garden when we moved into house
Richardis70 On January 29, 2016 Obtained plant
Set in hot bed.
FirmlyPlanted On July 4, 2017 Bloomed
FirmlyPlanted On May 14, 2012 Obtained plant
aspenhill On April 11, 2018 Obtained plant
Black Creek Greenhouse - qty 3
» Post your own event for this plant

Discussion Threads about this plant
Thread Title Last Reply Replies
Filigree Flora clematis Evipo029 suggested spot by AlexUnder Oct 4, 2018 9:08 PM 13
Nelly Moser or Jackmanii for September wedding? by SierraMom May 12, 2018 10:21 PM 3
Another ID please by Agoo Jun 10, 2017 1:43 PM 1
Clematis Lover fears for his young clematis by diasporalife Jun 4, 2017 6:25 PM 2
Mystery Clematis by SierraMom Apr 21, 2018 8:01 AM 20
Blooms and Chat! by Calif_Sue Nov 24, 2018 6:02 PM 239
Your favorite Trellis for Clematis? by lauriebasler Jul 5, 2017 8:25 AM 9
Pruning questions on Jackmanii Clematis by lauriebasler Sep 24, 2016 7:39 PM 14
Clematis jackmanii Superba by piksihk Sep 19, 2016 10:46 AM 3
Can this clematis be saved? by ssgardener May 14, 2016 9:22 AM 2
What is wrong? Help by gardengus Jun 28, 2016 4:20 AM 13
2016 Bloom Parade and Chat! by Calif_Sue Feb 15, 2017 11:42 AM 265
Late winter pruning of jackmanii clematis by lisaely Mar 13, 2016 12:02 PM 14
Purchased two Jackmanii but they don't look alike... by piksihk Oct 31, 2015 10:19 PM 4
Jackmanii Clematis by BrianNoel Jun 28, 2015 5:51 AM 13
What's Wrong? by stilldew Nov 28, 2015 12:58 AM 4
The President by Hemophobic Jun 10, 2015 11:12 AM 7
Jackmanii Superba dropping leaves at base. by riverman123 Jun 6, 2015 9:27 PM 7
Clematis; 'Pink Champagne'; So heres my idea... by riverman123 Mar 2, 2016 8:18 PM 21
Help my Henri...!! by riverman123 May 21, 2015 7:45 AM 2

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