Eversen Nurseries

Growth Methods

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Eversen Nurseries grow Advanced and Ornamental Trees and Shrubs to Australian Landscapers and Trade Businesses, utilising two types of Growth Methods.

  • Above ground containers
  • In-Ground Root Control Bags

This plant grown in a traditional plastic nursery pot exhibits circling roots.

(Pot has been removed)

This root control bag grown plant does not exhibit circling roots.

(Bag has been removed)


In-Ground Root Control bags

Our stock is grown in "root control bags" (or growbags). This allows us to grow large plants with excellent root systems.With growbags, roots do not circle as with those raised in plastic pots, and there is very little damage during transplanting. Stock is conclusive to being very hardy.

Root Control Bags (RCB) offer a system of growing caliper size trees and large shrubs in soil in the field:

  1. Without the labour of ball and burlap
  2. With containment of most of the root system for greater transplanting success

How The System Works

  1. Trees or shrubs planted in the Unique Field-Grow Containers in the ground, use existing good field soil; no expensive soil amendments are needed.
  2. As the roots grow outward, they contact and penetrate the unique fabric of the Field-Grow Container.
  3. Some roots grow through the Container, but are very restricted and partially girdled.
  4. Water and nutrient absorption occurs at the root tips and is increased due to increased root branching. Moisture and nutrients pass freely through the Container.
  5. The transfer of water and nutrients up to the leaves is through the centre of the root (xylem) and proceeds normally.
  6. Carbohydrates manufactured by the leave are returned by the outer portion of the root (phloem) and are stopped or greatly restricted at the inside surface of the Field-Grow Container.
  7. The accumulation of food manufactured by the plant in the stem and roots means;
    • Better branch bud development
    • Increased stem caliper
    • Increased root branching
    • Increased rate of root growth following transplanting

Fabric Functions

Containment

The fabric makes a very strong, tough container. Its strength is such that it is used extensively to reinforce and stabilize the sub-surface of highways, roads, railroad beds, and other construction uses.

Filtration

Is the process of allowing moisture and nutrients to pass freely through the sides of the container. the non-woven fabric has numerous pores of various shapes and sizes which resist clogging. These excellent filtering qualities are effective for as long as it remains in the soil.

Prevention of Root Circulation

The inner surface of the fabric is of a fuzzy, fibrous nature. When a root tip makes contact with the container's side wall, it becomes entangled in this fabric at that point. The rot is not able to glide over the side wall surface and to circulate as most frequently happens in all solid wall containers.

Restriction of Root Penetration

The fabric's ability to allow some root penetration while at the same time greatly restricting the penetration of each root is its most unique feature. the fabric consists of hundreds of manmade fibers, mechanically interlocked and bonded together with heat. these physical characteristics give the fabric great resistance to separation at any point. Thus, while a root tip may penetrate through one of the many small pores of the fabric, it remains very restricted or girdled at the container's side wall as it continues growing.