Mature Plant Dimension
and
Future Canopy & Root Dimensions
When a Shrub or Tree is first installed
The size of the planting hole
and spread of the irrigation system

is primarily determined by the size of
the Nursery pot that the plant came from.

When the soil is high clay
Water movement is at a Slow rate
This original size of the planting hole
should be enlarged.

Also, the larger the mature size of this plant
The larger the initially hole should be.

Why is This?
Plants that become large grow much faster

within only a couple years they
can outgrow the original hole

In high-clay soil roots have trouble spreading
Providing some extra time
before becoming root-bound helps!


In high clay soil, original holesize
can be 2 to 3 times normal


Just how slow the Soil HCR is
and how large the mature plant size
are the primary factors!


Calculating this can be really time consuming
Unless you are using the
Irrigation & Soil Matching
New Plant Irrigation Analyzer



In addition to calculating the proper
size of the original planting hole
This Analyzer reminds you of
the minimum size needed for the roots
once the plant or tree has matured


Though it is ideal for a shrub or tree
to have a rootzone as wide as the width
of the Canopy

More drought tolerant plants
can adapt and thrive on marginally
smaller width root zone.

Remember that shallow watering only serves
to increase evaporation and water waste.

Deep Moisture is Insulated
from Temperature
and other Evaporative factors

Knowing at the time of plant installation
Just how wide you will want to expand the irrigation
Provides important long term planning details.