Production in Root Control Bags

Report
Production in Root
Control Bags
Commercial Plant Production
Root Control Bag Construction
Fabric sides are
permeable to water,
nutrients & air.
Plastic bottom is
glued on, not stitched
on.
Root Control Bag
Growing Medium
Native soil
Root Retention at Harvest
WSU article states
that > 75% of the
plant’s root system is
retained at harvest.
Preventing Circling Roots
Root tips penetrate the
fabric.
Constriction.
Swelling &
carbohydrate build-up.
Callus and root
primordia formation.
Bag Side Wall
Constriction
Root
Root Tip
Bag Side Wall
New Branch
Roots
Root
Root Tip
Planting
Holes made
with an auger or
special planting
machine.
Flat bottomed.
A portion of the
bag should be
above-ground.
Planting at Mark Fleming’s
Nursery
Watering
Drip irrigation
• Drip Irrigation
• Mulched
• Grass Alleys
Harvest
Harvest dormant plant
material.


Small soil volume compared
to B&B.
Reduced water holding
capacity can’t support
developing foliage in the
spring.
Scrape off outside roots.
Remove the bag prior to
transplanting.
B&B
ROOT
CONTROL
BAG
Smaller soil
volume
1” caliper
16” ball
diameter
1” caliper
8”
diameter
bag
Harvesting Equipment
Smaller plants:

shovel or spade.
Larger plants:


loader tractor with sling
forklift
Harvesting at Mark Fleming’s
Nursery
Staking
May be required because of the small root
mass in relation to plant size.
Bag Sizes
Bag Size
Caliper Size
At Harvest
8"
1"
10"
1 ¼”
12"
1 ½”
14"
1 ¾”
16"
2”
18"
2 ½”
21"
3”
24"
4”
30"
6"
The End

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