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Jackmanii Clematis Vine

Clematis 'Jackmanii'

$22.65
$22.65 $0.00
per Plant - 4" Pot
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ZONES  4-9 | Good to grow! Zone
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Full sun loving Jackmanii is the all-time favorite climbing flowering vine: The famous deep purple Jackmanii Clematis blooms all summer. (Clematis)

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Description

This is it. Far and away the most popular and widely grown clematis. C. Jackmanii is the one we all see spilling over porch rails and up trellises with those stunning, large purple flowers. Up close, many of the blooms have a red/purple midrib in each petal. They are simply a knock-out, and the pride of everyone that grows them. If you can have only one clematis, this is the one.

Who was Jackman? The man who raised the first of this classic clematis, of course. It was introduced in England in 1858, when the Jackman and Son Nursery was already well-known, having been established in 1810 in a town near London called Woking. The Jackmans, fathers and sons, continued the nursery over five generations, ending in 1967, and were successful with all kinds of plants. But their first love was always Clematis. Of course, this one, today's world favorite, Clematis Jackmanii was their crowning achievement, but there are other famous ones. The family must have known a very beautiful girl who lived in their old hometown when in 1876, the nursery introduced Belle of Woking, a double clematis that is so beautiful its still a favorite today.

Jackmanii is a type 3 Clematis. Clematis in this group are later season bloomers and flower from buds developed in the current growing season. They should be cut back hard in late winter or early spring to stimulate a large flush or new growth.

Planting & Care

Growing Clematis: If you're already a clematis grower, you know all this. But if you're not, here's all you need to know.

First of all, there are several kinds of clematis, but most people want to grow the large-flowered types. For some info on the others, go to the bottom of this page.

Basic Requirements: First of all, clematis vines always want their roots shaded, and the plant growing up into full sun. That means you can put some shallow-rooted groundcover around the roots, or simply some mulch--just something to keep the hot sun off the root run, and promote moisture retention in that spot. But be sure your vine grows into plenty of sunlight, which promotes heavy flowering.

Soil is important. Clematis do best in neutral or slightly alkaline soils, but they are somewhat adaptable. If you have very acid soil, try to add some calcium when you plant. Also, be sure to dig the hole deep. Remember you're planning to have this plant in place for decades.

Where to plant is important. These incredible vines are some of the most beautiful flowering plants, and we've all seen them blooming lavishly on fences, porches and trellises. They're not really hard to grow, and they get larger and stronger every year. Sometimes they take their time getting going, so be patient. It usually takes about two years for a newly-planted vine to come into its own. The large-flowered types are hardy into the very cold north, so almost everyone can use them. Be sure to place yours so it has something to climb---fence, trellis, or post.

Winter and spring care are important. In very cold places (like Vermont, where I grew them for years), the winter kills the whole vine right down to the dirt. They actually disappear. Then in the spring, they are somewhat slow to emerge, so you must protect the spot, and watch for the shoots. Once they pop up, they grow fast, but beware--they are brittle! If you happen to break off the young spring shoots, it sets the vine back terribly, so its important to watch and care for the new shoots until they really get going up your post or trellis.

Once that happens, it helps to gently guide the vining shoots as they find their way upward. You can actually arrange your vine as it grows, but again, be gentle; the stems remain brittle. Soon you'll see buds, and then suddenly one day, they begin to open. Most popular clematis varieties open incredibly large flowers, often as large as 5 to 8 across. 

Further Reading

Shipping

As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Some perennials are shipped as potted plants, some as perennial roots packed in peat.  The ‘Plant Information’ section describes how that item will ship. All perennials and fall-planted bulbs are packaged to withstand shipping and are fully-guaranteed. Please open upon receipt and follow the instructions included.

Perennials and fall-planted bulbs are shipped at the proper planting time for your Growing Zone. Perennial and fall-planted bulb orders will arrive separately from seeds. If your order requires more than one shipment and all items are shipping to the same address, there is no additional shipping charge. See our shipping information page for approximate ship dates and more detailed information. If you have any questions, please call Customer Service at (802) 227-7200 or contact us by email or chat.

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Key Features

Light Requirements

  • Full Sun
  • Half Sun / Half Shade

Bloom Time

Early to late summer

Advantages

  • Attracts Birds
  • Long Bloom Time
  • Privacy
  • Cut Flowers
  • Deer Resistant
  • Rabbit Resistant

Additional information

Mature Height

120-144" tall (10-12 feet)

Mature Spread

36-72" wide (3-6 feet)

Soil Type

  • Loamy Soil
  • Clay Soil
  • Well-Drained Soil

Soil Moisture

  • Average
  • Moist / Wet

Planting Depth

The base of the stem(s) should be just at the soil surface after watering in

Planting Time

  • Spring / Summer

Flower Size

5-7" flowers

Plant Classification

Introduced Cultivar

Growing Zones

  • Zone 4
  • Zone 5
  • Zone 6
  • Zone 7
  • Zone 8
  • Zone 9

Poisonous or Toxic to Animals

Poisonous if ingested. Skin and eye irritant. Toxic to dogs, cats and horses.
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