designed to irrigate woody plants grown in containers in greenhouses landscape nurseries and home applications an inlet 60 h is terminated with an fitting 74 h for connection to a irrigation fluid source not shown the fluid conveying passageways 50 h comprise multiple sections of flow restricting means 35 h 36 h 37 h amp 39 h having various lengths to both distribute the fluid and reduce the fluid pressure primary restricting means 35 h 36 h amp 37 h act as both distribution headers and as flow restriction means multiple secondary flow restricting means 39 h act to further reduce and balance the fluid flow to each of the outlet ports 70 h this embodiment eliminates the need for a distribution header with large cross section with its inherent potential for sediment accumulation due to low flow velocity in this particular embodiment the flow restricting means 35 h 36 h amp 39 h are composed of tortuous paths as practiced by the prior art and also designed to equally space the outlet ports 70 h around the circular unitized mat 10 h this tortuous path configuration allows for proper operation when used with smaller container sizes a serrated opening 83 h is provided for the plant to grow through an overlapping seam 76 h is provided to allow installation around the trunk of the plant without exposure of any soil the outer edge 100 is sized to closely fit the container and may optionally have flexible extensions 86 h to allow for variations in the container size.