How best to tackle moss in our lawn with fall overseeding?
Our lawn is surrounded by dense woods. In 2016 we successfully removed all moss (thatching/aerating) and over-seeded with shade mixture from Newsome seeds. We had a beautiful lawn from November through July. (No dormant period) In August our grass started disappearing Grass and moss took over. We have no lawn now. (We did use a chemical preemergent crab grass killer in March.) No crab grass this year but no grass either. We've been advised to overseed with sun/shade mixture and top dress with leaf grow and lime. WHAT IS YOUR OPINION?
Howard County Maryland
There may be several reasons you have moss growth in your lawn which includes poor drainage, poor soils, poor lawn care practices, acidic soils, lack of sunlight, etc. Look at our publication regarding moss control
You can eliminate the moss by raking and disposing of. However, if you want to get rid of it, you need to correct the conditions that favor its growth. Begin by testing your soil. Results give pH, liming, and nutrient deficiencies.
If you want to grow grass, test your soil, rake the moss, and seed fine fescue grass seed such as (hard or sheep fescue) for shady conditions. This type of grass receives a minimum of 4-6 hours of direct sunlight. For full sun to part shade seed turf type tall fescue. See cultivar recommendations http://extension.umd.edu/sites/extension.umd.edu/files/_images/programs/hgic/Publications/non_HGIC_F...
Fertilize in the fall. http://extension.umd.edu/hgic/umd-extension-lawn-fertilizer-schedule-home-lawns
If not successful, other options include alternative groundcovers and some actually cultivate the moss.
See our publication on seeding http://extension.umd.edu/sites/extension.umd.edu/files/_images/programs/hgic/Publications/HG102%20La...