Answer: Overseeding with tall fescue won't immediately solve the problem. You will have a mixture of leaf blade textures and colors, but the fescue won't replace the bluegrass, it will just grow happily alongside it. It's a good combination, though; these grasses are complementary to each other and are often planted together in ballfields. Tall fescues have a fine-textured leaf blade; somewhat finer than bluegrass, which may help to hold the blades of the bluegrass erect. The more pressing problem is having to rake the grass prior to mowing. We always recommend that bluegrass be mowed as often as necessary to maintain a height of 2". If you're allowing your grass to grow taller between mowings, this may explain why the blades fall over you need to rake prior to mowing. Try mowing more frequently, or using a mulching blade on your mower (which tends to pull up on the blades just as they're being cut). These steps alone may be all you need to do to prevent having to rake the lawn prior to mowing.
Best wishes with your turfgrass!
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