Does Gypsum Help Clay Soil? When It Works and When It Won’t
Gypsum fixes clay that has a sodium problem, such as salt-damaged strips along a driveway. For most clay lawns it does little. How to tell which you have, and what helps instead.
Soil
Practical guides to improving clay soil, compaction, drainage, and lawn soil structure.
Latest Soil Guides
How to Test Clay Soil for a Lawn (and When a Home Kit Is Enough)
Why a lab soil test is worth it on a clay lawn, how to take a good sample, and when a home kit like the Rapitest 1601 is enough for a quick check.
How Long Does It Take for Grass Seed to Grow in Clay Soil?
Typical germination times for cool- and warm-season grass seed, why clay can slow them down, and how to water and mow until the new lawn fills in.
How to Aerate a Clay Soil Lawn: A Practical Step-by-Step Guide
Check for compaction, choose the right season, and core aerate your clay lawn with workable soil moisture. Learn how to check the plugs and care for the grass afterward.
How to Topdress a Lawn Without Burying the Grass
Choose suitable topdressing, estimate how much you need, and spread a thin, even layer over established grass. Learn when to wait or tackle a different repair.
Dethatching vs Aeration: What Does Your Clay Lawn Actually Need?
Check thatch and soil compaction before treating your clay lawn. Choose dethatching, core aeration, both, or neither, with timing that fits your grass.
Core Aeration vs. Spike Aeration: Which Is Better for Clay Soil?
Do spike aerators work on clay? They make holes but push soil aside, so they do little for compaction. Core aeration removes plugs. Here is when each makes sense.
How to Fix Compacted Clay Soil Lawn (Without Digging)
Learn how to diagnose and improve a compacted clay-soil lawn with core aeration, suitable topdressing, leveling, and overseeding.
How to Fix Compacted Clay Soil Edges Near Walkways
Learn how to loosen compacted clay along walkways, rebuild the edge, and re-establish grass without damaging the adjacent pavement.
Can You Add Sand to Clay Soil? (Why It Can Make Compaction Worse)
Considering sand for a clay lawn? Learn why adding sand without a broader soil plan can create denser conditions and what to consider instead.
How to Fix Standing Water on a Clay Lawn
Learn how to diagnose standing water on a clay lawn and compare soil, grading, runoff, rain-garden, and drainage options.