SowGreen, It is possible we are both right. Our soils could be very different and react differently to watering. I have seeded a number of places in Georgia but never in powdery soils. I only tried watering the lawn first one time here and that one was close to a total disaster. I have done something close to what Muddstopper does and often do it that way. I will make one pass with a light application to just wet the soil, to get rid of the dust and hold everything in place and then once it has sat for a minute I will apply a heavier application. Watering a whole lawn then going back and hydro seeding will make it impossible to walk on or drag a hose across here in our soils. It could well be different there. Hawaii would be a nice place to hydroseed. At least I could forget about snow. The place I always thought would be ideal would be the Cayman Islands. I had a conversation with a guy from there about 10 years ago and he said there was one hydroseeder there and he charged 99 cents a foot. (ten years ago).