Trellis arrangements

Trellising is basically attaching wires to posts that are set firmly in the ground. The rule of thumb is: 1 down for every 2 up; so you need a 3m post for 2m above ground.

Trellis 01

The cheapest method.

A Monofil wire twisted around itself provides the lowest cost - but most inflexible method. In this example the wire passes through a hole that makes it even more inflexible. (Incidentally these ‘vines’ are blackberries!)

If this method is used at both ends with a single length of wire, tensioning is not easy and requires pulling and holding the tension - with some risk to fingers being nipped between the wire and the post! It is better to use two lengths of wire joined by a Gripple, say, 1m from one post.

Trellis 02

The easiest method.

A Monofil wire looped round a post and secured with a Gripple. Note a group of vine clips hanging on the wire ready for use. The wire can easily be moved up or down the post and the Gripple makes tensioning easy.

This method can be used in conjunction with the first method as a means of tensioning, but it is a little trickier that having both ends fixed and joining with a single Gripple.

Trellis 03

Moveable, two wire vertical attachment.

Here a single Gripple tensions ‘two’ Monofil wires. In fact it is a single wire held apart by a wooden spacer at either end. This method is economical on Gripples but to change the vertical distance between wires requires new spacers. A metal band has been used to attach the spacer to the post; this allows the wires to be moved up or down to adjust the horizontal positioning of the wire. Note the metal bands are close to the wires to reduce the stress in the spacers.

Trellis 04

Moveable, two wire inclined attachment.

This is similar to the above method, but the wire passes behind the post thereby taking the stress off the wooden spacer.

Trellis 05

Le tout ensemble.

Here is a Monofil wire, tensioned by a Gripple, with a young vine shoot clipped in position.

Trellis 06

Year 2 Guyot training

Vines growing in the Royal Horticultural Society in their second year of Guyot training. Note the Gripples on galvanised wire; they are used on the post restraint wires and to secure the wires to the posts. However, a galvanised wire tensioner is added; this is not needed with Monofil. Commercial growers often prefer to use galvanised wire because it has a reduced risk of damage when machines are used for trimming.

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