Wisteria 'Caroline' Tree Form
Wisteria 'Caroline' Tree Form

Wisteria 'Caroline' Tree Form

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SKU: S68957
1 for $149.00
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Quick Facts
Common Name: Wisteria
Hardiness Zone: 5-8S/W Exposure: Sun
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Blooms In: May
Mature Height: 6-10' Spacing: 10'
Read our Growing Guide Ships as: BAREROOT 48"
Deer Resistance: Yes
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Product Details

Product Details

A Tree Wisteria is a treasure beyond price. Whether you choose the pristine beauty of our white variety, 'Texas White,' or blue-violet 'Caroline,' this distinctive offering will give pleasure for many years to come.

The spectacular beauty and astonishing vigor of Wisteria are best employed by growing it in the form of these small trees. Long racemes of flowers drape down from the deep green heads of foliage shaped by pruning, and the blooms shift gently with every breeze. The effect is graceful and stately.

Tree Wisterias are not widely available because they are devils to get started, although subsequent culture (in full sun and average garden soil) could not be easier. We offer 3-year-old, 4′-tall, bareroot plants. They are grown from grafts, so bloom is guaranteed.




The size of the plants we ship has been selected to reduce the shock of transplanting. For some, this means a large, bareroot crown. Others cannot travel bareroot or transplant best if grown in containers. We ship these perennials and annuals in 1 pint pots, except as noted. We must point out that many perennials will not bloom the first year after planting, but will the following year, amply rewarding your patience. We ship bulbs as dormant, bare bulbs, sometimes with some wood shavings or moss. Shrubs, Roses, vines, and other woody plants may be shipped bareroot or in pots. The size of the pot is noted in the quick facts for each item.


We ship our bulbs and plants at the right time for planting in your area, except as noted, with orders dispatched on a first-come, first-served basis by climate zone. Estimated dates for shipping are indicated in the Shipping Details box for each item. Please refer to the Shipping Details box to determine the earliest shipping time. Please supply a street address for delivery. Kindly contact us with two weeks notice, if you'll be away at expected time of delivery.


We guarantee to ship plants that are in prime condition for growing. If your order is damaged or fails to meet your expectations, we will cheerfully replace or refund it. Please contact our Customer Service Department at 1-800-503-9624 or email us at [email protected]. Please include your order number or customer number when contacting us.



Average Customer Rating: (9 Reviews) Write a Review

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I had a professional gardner plant this tree for us as prescribed (in the sun with support). However it didn't make it. Im disappointed because it's quite expensive for it not to ever get even a sprout on it. Other purchases have been tremendous, but not this one.

7 of 7 people found this review helpful. Do you? yes no  Certified buyer



5 of 6 people found this review helpful. Do you? yes no

A treasure worth the wait

I planted this tree three years ago and was rewarded this year with lots of blooms. It takes a while to get the tree established.
There were flowers everywhere, and it was very satisfying to the eye to see how it's grown.
Other than vertical support that I gave to the trunk,a little pruning with the vines, there was very little work to be done for up keep of this tree.

37 of 37 people found this review helpful. Do you? yes no

Tree Wisteria

The wisteria tree produces amazing flowers in abundance and really brings out the best in a garden. The tree itself is unique and requires little to no work at all. Just give it sun and it'll do the rest!

33 of 36 people found this review helpful. Do you? yes no

Worth the wait

When this plant arrived, it was a thin tree. My daughter was disappointed that no flowers appeared the first year. We waited three years and were surprised to find one beautiful bloom on it last year. This year we came out to find the entire tree covered in gorgeous purple flowers. When you walk through our yard, the sweet smell of Wisteria fills the air.

10 of 10 people found this review helpful. Do you? yes no

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Growing guide

Growing guide
Print Grow Guide

Tree Wisteria pruning

Latin Name Pronunciation: wis-teer'ee-uh     

The spectacular beauty and astonishing vigor of Wisteria are best employed by growing it in the form of a small tree, properly known as a standard. Long racemes of fragrant May flowers drape down from soft green heads of foliage shaped by pruning, and shift gently with every breeze. The effect is graceful and stately, and the compact head of a Tree Wisteria looks sensational in a mixed border of perennials, bulbs, and annuals.

Please note: Wisterias are generally slow to break dormancy after planting. Please be prepared to wait until early summer for your plant to leaf out. In subsequent years, it will leaf out at the normal time (midspring).

Choosing a Site: Wisterias flower best and grow most vigorously where they receive ample sunshine - at least 6 hours a day. They thrive in any type of soil, as long as it is well drained.

Planting: Remove the packaging around your bareroot Wisteria and soak the roots in a pail of water for a few hours. Then dig a hole wide enough to accommodate the spread of the roots and deep enough to allow you to set the crown (the point where the stem meets the roots) 1in below the surface of the soil. Place the roots in the planting hole and arrange them like the spokes of a wheel or in whatever fashion appears natural. Take extra care when arranging the roots in the planting hole not to break them; the roots of many woody plants are brittle. Holding the crown 1in below the surface of the soil with one hand, push soil into the hole with the other, working soil around the roots to prevent the formation of air pockets. Then firm the soil around the crown, pressing down with both hands. Make a rim of soil around the edge of the planting hole to form a basin. This basin serves to catch and hold water and channel it to the roots. Finally, give the plant a thorough soaking.

Please note: Bareroot plants dry out quickly once they are removed from their packaging - especially on a sunny, breezy day. We strongly recommend that you keep the roots covered with packaging material until you are ready to plant.

Staking: Tree Wisterias need extra support to hold their heads up in strong winds. After planting, push the wooden stake provided with your tree into the ground 6-12in deep and 1/2in away from the plant's trunk. Secure the trunk to the stake at several points about 8in apart, using the plastic tie tape provided with your tree. As the head grows and the trunk expands, you'll need to replace the original stake with a larger wooden stake or a heavy steel pipe. Check the tree in spring and fall to make sure the stake is holding firm and the tie tape used to secure the trunk to the stake is not too tight and restricting expansion of the trunk. Plants should always remain securely staked.

Watering and Fertilizing: The first year after planting, Wisterias need the equivalent of 1in of water per week to speed their establishment. If sufficient moisture fails to fall from the sky, water deeply once a week. Established plants need watering only during prolonged dry spells. Wisterias require little if any fertilizing; excessive fertilizer inhibits bloom. If your soil is especially poor or sandy, you might give plants a light feeding of 5-10-10 or 5-10-5 at the rate of 3/4 cup per square yard in early spring each year.

Overwintering: In cold-winter climates such as ours here in Litchfield (Zone 5 [-20°F]), protect the main stem for the first few winters after planting with a piece of plastic tubing. Make a straight cut from one end to the other and pry the cut open to enclose the stem. (Your local garden center may sell precut tubing.) On older specimens, tie the branches together with twine, cat's-cradle fashion (creating a web of crisscrossing strings), to prevent wind and ice from breaking branches.

Pruning: To preserve the globe shape of the head, tree Wisterias require light but frequent pruning of the long twining branches produced in summer. They also need one hard pruning in late summer or early fall - a few weeks before your first frost date. Cut the current season's growth back to just 5 to 6 large buds (leaving stubs about 6 inches long) and remove poorly placed branches entirely. This severe haircut controls growth and encourages some of the leaf buds to change into flower buds. Don't lose sleep over pruning mistakes. Wisterias are very forgiving; vigorous growth the next season will give you a second chance.

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