A Quick Summary of a Plant’s Water Needs
Amount of Water Needed
01. A plant needs 1 to 3 inches of water per week to grow successfully. One half (.5) gallon of water per square foot equals one inch per square foot.
Variables Which Determine Water Need
01. The type of soil determines the amount of water which needs to be applied.
Type of Soil
Inches / Water Per Week Needed
Multiplier
Sandy
Black Soil
Clay
Black Soil
Clay
3″
2″
1″
2″
1″
1.5
1.0
0.5
1.0
0.5
02. The size of the plant will determine the surface area which needs to be watered. The water need is calculated by multiplying the multiplier times the square footage which needs to be watered. An example of the square footage for a given plant size is shown below.
Plant Size
S. F. To Water (Approximate)
Gallons/Week
One Gallon
Five Gallon
2.0″ Balled/Burlapped Tree
Five Gallon
2.0″ Balled/Burlapped Tree
1 Square Foot
2 Square Feet
10 Square Feet
2 Square Feet
10 Square Feet
1.5/1/.5
3/2/1
15/10/5
3/2/1
15/10/5
