Clematis × jackmanii Jackman's Clematis
The Jackman Clematis is a hybrid with large, rich purple sepals that develop on new growth. The root system should be kept cool by deep soil preparation and mulching around the base. It is said that Clematis prefer "a warm top and a cool bottom". While this is generally true, provide some shade to the top portion during the day for the best results. Climbs by twining stems and clasping leaves, so it needs a trellis or wire support. Leaf spot and stem rots can be serious problems.
When Clematis × jackmanii has been observed flowering or fruiting at Purdue University
Flowering
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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| Week 1 flowering not present | Week 2 flowering not present | Week 3 flowering not present | Week 4 flowering not present | Week 5 flowering not present | Week 6 flowering not present | Week 7 flowering not present | Week 8 flowering not present | Week 9 flowering not present | Week 10 flowering not present | Week 11 flowering not present | Week 12 flowering not present | Week 13 flowering not present | Week 14 flowering not present | Week 15 flowering not present | Week 16 flowering not present | Week 17 flowering not present | Week 18 flowering not present | Week 19 flowering present | Week 20 flowering present | Week 21 flowering present | Week 22 flowering present | Week 23 flowering present | Week 24 flowering present | Week 25 flowering present | Week 26 flowering present | Week 27 flowering present | Week 28 flowering present | Week 29 flowering present | Week 30 flowering present | Week 31 flowering present | Week 32 flowering present | Week 33 flowering present | Week 34 flowering present | Week 35 flowering present | Week 36 flowering present | Week 37 flowering present | Week 38 flowering present | Week 39 flowering present | Week 40 flowering present | Week 41 flowering present | Week 42 flowering present | Week 43 flowering present | Week 44 flowering present | Week 45 flowering present | Week 46 flowering present | Week 47 flowering present | Week 48 flowering present | Week 49 flowering not present | Week 50 flowering not present | Week 51 flowering not present | Week 52 flowering not present |
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Fruiting
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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| Week 1 fruiting not present | Week 2 fruiting not present | Week 3 fruiting not present | Week 4 fruiting not present | Week 5 fruiting not present | Week 6 fruiting not present | Week 7 fruiting not present | Week 8 fruiting not present | Week 9 fruiting not present | Week 10 fruiting not present | Week 11 fruiting not present | Week 12 fruiting not present | Week 13 fruiting not present | Week 14 fruiting not present | Week 15 fruiting not present | Week 16 fruiting not present | Week 17 fruiting not present | Week 18 fruiting not present | Week 19 fruiting not present | Week 20 fruiting not present | Week 21 fruiting not present | Week 22 fruiting not present | Week 23 fruiting not present | Week 24 fruiting not present | Week 25 fruiting not present | Week 26 fruiting not present | Week 27 fruiting not present | Week 28 fruiting not present | Week 29 fruiting not present | Week 30 fruiting not present | Week 31 fruiting not present | Week 32 fruiting present | Week 33 fruiting present | Week 34 fruiting present | Week 35 fruiting present | Week 36 fruiting present | Week 37 fruiting present | Week 38 fruiting present | Week 39 fruiting present | Week 40 fruiting present | Week 41 fruiting present | Week 42 fruiting present | Week 43 fruiting present | Week 44 fruiting not present | Week 45 fruiting not present | Week 46 fruiting not present | Week 47 fruiting not present | Week 48 fruiting not present | Week 49 fruiting not present | Week 50 fruiting not present | Week 51 fruiting not present | Week 52 fruiting not present |
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