I planted some Scotts "High Traffic" seed which is coated with Zeba moisture-retaining gel. I compared it with Scotts "Classic" an inexpensive mix. Both seed mixtures contained about a third perennial ryegrass. Planted in potting soil in containers. I watered the containers by skipping two days and watering on the third day. Outdoors, except on cold nights. Temps were in the mid-70's. At 5 days after planting, both seed types were at about 1/4 inch tall. At 12 days the gel-coated "High Traffic" was taller, about 3 inches, right. The uncoated seed "Classic" grew to a maximum of about 2 inches, on the left in photo.