Answer: A tsunami is a giant wave (or series of waves) created by an undersea earthquake, volcanic eruption or landslide. Tsunamis are often called tidal waves, but this is not an accurate description because tides have little effect on giant tsunami waves.nswer: A tsunami is a giant wave (or series of waves) created by an undersea earthquake, volcanic eruption or landslide. Tsunamis are often called tidal waves, but this is not an accurate description because tides have little effect on giant tsunami waves.
Roundup is not persistent in the soil. You can lay your sod one week after spraying the weeds. The herbicide will get into the growth of any plant it touches, not anything the chemical does not touch. I don't know of a pre-m herbicide that controls germination of any weeds likely to grow this time of year. Pre-m only prevents weed seeds from germinating.
Freshly laid sod should be thoroughly soaked. Lift a couple of select pieces to check your watering. Make sure the sod is wet underneath-the soil should be moist 4 to 6 inches deep. The next two weeks-or until the sod has rooted-water to keep it moist. Pay close attention to edges, corners and areas near buildings-these spots tend to dry out quickly and may need addition hand watering. Check it twice a day during the first two weeks. Water new sod to keep it moist but not wet or mucky.