What Is A Gravel Bed: How To Make A Gravel Bed For Trees

bare root tree

Image by v_zaitsev

Trees for transplant are removed from their growing sites with many of the feeder roots left behind. One of the primary reasons that trees struggle after transplant is the lack of a full root system. This is especially true with trees sold “bare root,” without a root ball. One way to stimulate transplant trees to grow new feeder roots is by using a gravel bed. What is a gravel bed? Read on for gravel bed information and tips on how to make a gravel bed for trees.

What is a Gravel Bed for Trees?

A gravel bed is just what it sounds like, a “bed” or pile of
gravel. Trees intended for transplant are planted in the gravel and kept there
for up to six months. They are given water and sometimes liquid nutrients but
not provided any soil.

The lack of soil stresses the trees, which is required so
they can focus their energy on producing more feeder roots to seek nutrients. This
creates a new system of fibrous roots that travels with the trees when they are
transplanted and makes it easier for them to establish and the primary gravel
tree bed benefits provided.

Gravel Bed Information

The gravel bed system of rooting trees has been used for several decades at commercial nurseries, municipalities, and universities. You’ll also find community gravel beds where cities encourage the use of this system by their residents.

Gravel tree bed benefits are many, especially for bare-root trees. These trees are considerably cheaper to buy than balled-and-burlapped or container trees, and also lighter and easier to handle.

Since the rate of survival after transplanting bare root
trees is lower and their planting season shorter given their lack of feeder
roots, putting the trees into gravel beds for a few months creates an expanded
mop of small roots that reduces establishment failure.

Gravel bed trees have a higher survival rate when
transplanted. That’s why many cities, especially in the Midwest, are creating
community gravel beds that allow them to buy and plant many more trees.

How to Make a Gravel Bed

If you are wondering how to make a gravel bed, you will need
to pick a site with excellent drainage and easy access to water. The size of
the site depends on how many trees you intend to plant there. Permanent or
temporary borders hold the gravel in place.

Pile gravel at least 15 inches (38 cm.) deep, using nine
parts of small river rock or pea gravel to one part same. Simply plant the
trees in the gravel.

Timer-controlled drip irrigation or soaker hoses make the process easier. Some community gravel beds add surface applied, slow-release fertilizer.

This article was last updated on 11/26/21
Read more about General Tree Care

Trees for transplant are removed from their growing sites with many of the feeder roots left behind. One of the primary reasons that trees struggle after transplant is the lack of a full root system. This is especially true with trees sold “bare root,” without a root ball. One way to stimulate transplant trees to grow new feeder roots is by using a gravel bed. What is a gravel bed? Read on for gravel bed information and tips on how to make a gravel bed for trees.

What is a Gravel Bed for Trees?

A gravel bed is just what it sounds like, a “bed” or pile of
gravel. Trees intended for transplant are planted in the gravel and kept there
for up to six months. They are given water and sometimes liquid nutrients but
not provided any soil.

The lack of soil stresses the trees, which is required so
they can focus their energy on producing more feeder roots to seek nutrients. This
creates a new system of fibrous roots that travels with the trees when they are
transplanted and makes it easier for them to establish and the primary gravel
tree bed benefits provided.

Gravel Bed Information

The gravel bed system of rooting trees has been used for several decades at commercial nurseries, municipalities, and universities. You’ll also find community gravel beds where cities encourage the use of this system by their residents.

Gravel tree bed benefits are many, especially for bare-root trees. These trees are considerably cheaper to buy than balled-and-burlapped or container trees, and also lighter and easier to handle.

Since the rate of survival after transplanting bare root
trees is lower and their planting season shorter given their lack of feeder
roots, putting the trees into gravel beds for a few months creates an expanded
mop of small roots that reduces establishment failure.

Gravel bed trees have a higher survival rate when
transplanted. That’s why many cities, especially in the Midwest, are creating
community gravel beds that allow them to buy and plant many more trees.

How to Make a Gravel Bed

If you are wondering how to make a gravel bed, you will need
to pick a site with excellent drainage and easy access to water. The size of
the site depends on how many trees you intend to plant there. Permanent or
temporary borders hold the gravel in place.

Pile gravel at least 15 inches (38 cm.) deep, using nine
parts of small river rock or pea gravel to one part same. Simply plant the
trees in the gravel.

Timer-controlled drip irrigation or soaker hoses make the process easier. Some community gravel beds add surface applied, slow-release fertilizer.

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