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Espalier

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Espalier is the horticultural practice of controlling the growth of woody plants.

Horizontal espalier
Horizontal espalier

Gardeners use pruning and tying to guide branches onto a frame. This creates two-dimensional, flat shapes. These plants are often trained against a wall, a fence, or a trellis. The practice serves two main purposes. It is used for decoration in formal gardens. It is also used to grow fruit in gardens with limited space.

Schloss Weilburg, Baroque garden, espalier pears
Schloss Weilburg, Baroque garden, espalier pears

The mechanism of espalier involves careful seasonal management. In the spring, a gardener prunes the tree to a specific height. This might be the lowest wire above the ground. During the summer, the buds grow into new branches. The gardener must guide these branches to the desired shape. This is done by tying them to wires or canes. To maintain the pattern, unnecessary buds are rubbed away with a thumb. In the autumn, the branches are often lowered while they are still flexible. They are then tied to a trellis to complete the level. This process allows a gardener to increase branch growth by training it vertically. Later, they can increase fruit production by training the branches horizontally.

There are many distinct stages and types of espalier designs. A V-shaped design is a common starting point. Two buds are allowed to grow into branches attached to canes. These canes are tied to a wire to maintain the V shape. A Belgian fence is created by planting many V-shaped trees in a line. These trees are placed two feet apart so their branches cross. The stepover is a horizontal form. It uses a single set of branches tied to a wire above the ground. The horizontal T, or horizontal cordon, creates multiple levels. A gardener trains a vertical stem up to a second wire. In the second year, they create another V shape at that level. Other designs include the palmette or fan. In this style, branches radiate outward in a pattern.

DSCN3598 espalieredpeartree e
DSCN3598 espalieredpeartree e

The history of espalier is long and varied. The term is French and comes from an Italian word. It originally meant something to rest one's shoulder against. In the 17th century, the word referred only to the wooden frame. Later, it came to describe the practice and the plants themselves. The technique likely began with the ancient Romans. During the Middle Ages, Europeans refined it into a formal art. People used it to grow fruit inside castle courtyards. This allowed them to save open space for other uses. Vineyards have used similar training for grapes for hundreds or even thousands of years.

Choosing the right species is vital for successful training. Most woody plants can be trained into a flat plane. However, certain trees adapt better to the process. Apple and pear trees are ideal for horizontal T training.

SshapedEspalier
SshapedEspalier

Citrus species like lemons, oranges, and tangerines are also common. Other tree options include Japanese maple, redbud, and various magnolias. Shrubs like camellias, gardenias, and junipers can be used. Even woody vines like jasmine or creeping fig can be trained. The choice of plant depends on the desired look and the available space.

Successful installation requires specific tools and care.

01002stepoverbig
01002stepoverbig

Plants are usually installed at the base of a solid wall. This provides space for roots to grow and allows air to circulate. This circulation helps with pest control. For masonry walls, gardeners use U-bolts or eye bolts. These are anchored into the mortar joints. Wooden walls might use galvanized nipples and turnbuckles to keep wires taut. It is best to let unpruned plants become established before major pruning begins. Major pruning is often done while the plant is dormant.

Espalier is connected to several other plant-shaping traditions. It shares similarities with bonsai, which shapes small trees to look like full-grown ones. It is also related to topiary, the clipping of foliage into clear shapes. Another related field is pleaching, which creates hedges for stock control. Espalier also connects to grafting, where two plants are joined together. By using walls to reflect sunlight, gardeners can also extend the growing season. This extra heat helps fruit mature more fully. This makes espalier a clever way to combine art with science.

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🖼️ Images & Media (6)
File:Horizontal espalier.JPG
Horizontal espalier.JPG
File:Espalier fruit tree at Standen, West Sussex, England May 2006.JPG
Espalier fruit tree at Standen, West...
File:DSCN3598 espalieredpeartree e.JPG
DSCN3598 espalieredpeartree e.JPG
File:SshapedEspalier.JPG
SshapedEspalier.JPG
File:Schloss Weilburg, Baroque garden, espalier pears.jpg
Schloss Weilburg, Baroque garden,...
File:01002stepoverbig.jpg
01002stepoverbig.jpg
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