During the cold months, grass can stay rolled for much longer, I have seen 5-7 day old rolls that survived very well in cold climates. The lawn should be installed as soon as possible after receiving it. Once the grass is harvested, it starts to break down. The speed at which this occurs is determined by the temperature of the air.
The grass ordered in winter will last up to a week on the pallet, but if you install it in the hot summer, it will only last 24 hours or less. Watering the lawn while it's still on the platform won't help. The heat of decay is what will cause the grass to spoil, not the lack of moisture. Technically, mown grass will last about 36 hours in summer and about 72 hours in winter.
But install it as soon as possible, please. It's a popular choice for new grass or repairing damaged grass patches. Basically, it should last forever and there will be no need to replant it, as long as you buy premium grass and take good care of it. Typically, a pallet (600 square feet) takes approximately 1 to 1 hour and a half to install.
Areas that are difficult to access and those that require a lot of cutting will take longer. On hot days, if the lawn is heating up and starting to break down, unroll it immediately and apply water to release the heat. If you wait too long and your lawn starts to show signs of decay or death, you may have no choice but to throw it away and start again with fresh grass. So how long does the grass last? Now you know that mown grass optimally lasts only 12 hours and no more than 5 days, even in cold temperatures.
Instructions for watering new grass vary depending on the type of lawn, the time of year the lawn is installed, and whether it is planted in the sun or shade. Crews have to mark all the watering heads, strip the area with lawn mowers, and take away all the old grass. For further assistance with delivering new turf or turf, contact a turf installation company in your local area.