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Sub-Irrigation System

Written by Leslie Marlow | April 13, 2023

Plug Tray & Flat Compatibility

Pair T.O. Plastics plug trays with our standard flats, germination tray, or display flat without drainage holes for sub-irrigation watering. Add either the 2-inch or NEW 7-inch humidity dome for all-in-one growing system!

Sub-Irrigation & All-In-One Growing System

  • Great for indoor growing where floor drainage is not available.
  • Results in more uniform plant growth and less foliar disease.
  • Reduced overall water usage.
  • Improved fertilizer-use efficiency.
  • Higher seed germination rate from a consistent soil moisture.
  • Labor and time savings for less frequent watering.
  • Less shrink with consistent watering across all cells.
  • Create all-in-one growing system with humidity dome!

Sub-Irrigation Sample Combinations

SUREROOTS® NURSERY PLUG TRAY  720695C
PL-SR-50-3-VH


GERMINATION TRAY  745731C
FLAT-GERM-TRAY-NH

DISPLAY FLAT  760247C
FLAT-DISPLAY-WH-NH

STANDARD FLAT  710251C
STF-1020-OPEN-NH

All-In-One Growing System


7-INCH HUMIDITY DOME  760525C
STF-1020-DOME-TALL-CL

2-INCH HUMIDITY DOME  760549C
STF-1020-DOME-CL

Select plug trays shown with 1020 standard flat, germination tray, or display flat without drainage holes to achieve sub-irrigation watering. Additional combinations available with 2-inch or 7-inch humidity dome to create controlled growing environment. Full compatibility chart with T.O.P. product combinations available.

SureRoots® Elite Plug Trays

720753C w/germination tray
PL-SR-ELITE-50-1.75-35-VH

720750C
w/display flat
PL-SR-ELITE-50-1.75-40-VH

720760C
w/1020 flat
PL-SR-ELITE-50-1.75-40-VH
 
SureRoots® Nursery Plug Trays

720695C
w/1020 flat
PL-SR-50-3-VH

720697C w/1020 flat
PL-SR-50-3-HW-VH

720700C
w/1020 flat
PL-SR-50-DP-VH
 
Standard Plug Trays

720463C w/display flat
PL-50-SQ-NET-VH

720469C
w/germination tray
PL-72-SQ-NET-VH

720477C
w/germination tray
PL-98-SQ-NET-VH

720494C w/display flat
PL-128-SQ-NET-VH 

720498C
w/display flat
PL-162-SQ-NET-NV

720512C w/germination tray
PL-200-SQ-1.75-NET-NV

720520C
w/germination tray
PL-200-SQ-2.125-NET-NV
 
True Series Plug Trays

720450C
w/display flat
PL-72-T-RD-VH

720452C w/germination tray
PL-84-T-SQ-VH

720455C
w/germination tray
PL-84-T-STAR-VH
 
Star Plug Trays

720549C
w/1020 flat
PL-21-STAR-DP-VH

720556C
w/1020 flat
PL-32-STAR-DP-HW-STY-VH

720557C
w/germination tray
PL-36-STAR-VH

720562C
w/1020 flat
PL-38-STAR-DP-NV

720576C
w/display flat
PL-38-STAR-3.0-NV

720578C
w/1020 flat
PL-38-STAR-4.0-NV

720566C
w/germination tray
PL-50-STAR-VH

720568C
w/1020 flat
PL-50-STAR-DP-VH

720573C
w/display flat
PL-58-STAR-VH

720597C w/germination tray
PL-72-STAR-VH

720582C
w/germination tray
PL-72-STAR-DP-VH
 

Contact our horticulture team to determine best sub-irrigation watering method and humidity control option for your growing needs.