Soil Test and Amendment Tracker
A printable multi-year tracker for soil test results, lime applications, and other amendments across yard zones, with a year-over-year pH trend log. Zone snapshot at top, full soil-test results log (date / zone / lab / pH / N / P / K / Ca / Mg / OM / recommendations / cost), lime application log (date / zone / type / amount in lb and kg / pre-app pH / target / per-app or single / cost), other amendments log (sulfur, gypsum, compost), 3-year pH trend table, and a quick reference card with target pH by plant, US Cooperative Extension search hint, and Canadian provincial labs.
Pair with the Lime Application Calculator for the math, the Soil pH Testing Guide for sampling and lab references, the Fertilizer Calculator for the feeding side, and the Lawn Fertilizer Application Log for the lawn-specific feeding record.
Soil Test and Amendment Tracker
Multi-year log for soil tests, lime applications, other amendments, and pH trends across yard zones. Print one per property. Re-test established beds every 2 to 3 years, active vegetable gardens annually. Wait 6 to 12 months after major amendments before retesting.
Zone snapshot
| Zone name | Plant type | Target pH | Soil type | Sun exposure | Notes |
|---|---|---|---|---|---|
| Front lawn | 6.0 to 7.0 | ||||
| Back lawn | 6.0 to 7.0 | ||||
| Vegetable bed 1 | 6.0 to 6.8 | ||||
| Vegetable bed 2 | 6.0 to 6.8 | ||||
| Fruit / blueberry patch | 4.5 to 5.5 | ||||
| Shrub border | 6.0 to 7.5 | ||||
| Tree dripline | 6.0 to 7.5 | ||||
| Container area | 6.0 to 6.8 |
Sample each zone separately. Mixing zones in one sample gives an average that does not match any single zone.
Soil-test results log
| Date | Zone | Lab | pH | N | P | K | Ca | Mg | OM % | Recommendations | Cost (USD / CAD) | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Standard residential test covers pH plus the listed nutrients plus CEC and OM percent. Add a micronutrient panel (Fe, Mn, Zn, Cu, B) if you suspect alkaline lockout or have unusual symptoms.
Lime application log
| Date | Zone | Lime type | Amount (lb / kg) | Pre-app pH | Target pH | Per-app or single | Cost (USD / CAD) | Notes |
|---|---|---|---|---|---|---|---|---|
Lime types: dolomitic (Ca + Mg, slower-acting), calcitic (Ca only, faster-acting), pelletized (either with binder; easier to spread, more expensive). Match to your soil-test Mg level. Wait 6 to 12 months after application before retesting.
Other amendments log
| Date | Zone | Amendment | Amount | Purpose | Cost (USD / CAD) | Notes |
|---|---|---|---|---|---|---|
Amendment types: elemental sulfur (lower pH), aluminum sulfate (lower pH, faster, also adds Al), gypsum (Ca without raising pH; loosens clay), compost (build organic matter, slight nutrient contribution), well-aged manure (slow N + organic matter), bone meal (slow P), kelp (micronutrients + K). Avoid hydrated lime for residential use; caustic and shocks soil microbiology.
Year-over-year pH trend (3-year rolling)
| Year | Front lawn | Back lawn | Veg bed 1 | Veg bed 2 | Fruit / blueberry | Shrub border | Tree dripline | Notes |
|---|---|---|---|---|---|---|---|---|
Most humid-climate soils drift down 0.1 to 0.3 pH per year. Arid-climate soils drift up. A 0.5 or larger drift in one year flags a problem (over-application of acid-forming N fertilizer, fungal disease, drainage failure). Consult a cooperative-extension or provincial agronomy office for site-specific guidance.
Quick reference: target pH by plant
| Plant | Target pH | Notes |
|---|---|---|
| Lawn | 6.0 to 7.0 | Cool-season + warm-season |
| Vegetable garden (general) | 6.0 to 6.8 | The default for most beds |
| Tomatoes + peppers | 6.2 to 6.8 | Slightly higher than general garden |
| Brassicas (cabbage, kale, broccoli) | 6.5 to 7.5 | Higher pH discourages clubroot |
| Potatoes | 5.5 to 6.5 | Lower pH discourages potato scab |
| Blueberries | 4.5 to 5.5 | Needs sulfur on most native soils |
| Rhododendrons / azaleas / camellias | 4.5 to 6.0 | Acid-loving |
| Hydrangeas (pink) | 6.0 to 6.8 | Higher pH = pink blooms |
| Hydrangeas (blue) | 4.5 to 5.5 | Lower pH releases Al = blue blooms |
| Deciduous trees / shrubs (most) | 6.0 to 7.5 | Wide-tolerant |
| Conifers (pines, spruces, firs) | 5.0 to 6.5 | Acid-leaning |
| Asparagus | 6.5 to 7.5 | Slightly alkaline-preferring |
Quick reference: lab routing
| Country / region | Lab | Typical cost | Notes |
|---|---|---|---|
| US (any state) | State Cooperative Extension | Free to USD 25 | Search "[state] cooperative extension soil test" |
| US private lab | Logan Labs (Ohio) | USD 30 to 50 | Popular for organic / biodynamic full mineral panels |
| US private lab | A&L Western Agricultural Labs | USD 25 to 45 | Multiple US locations |
| US private lab | Spectrum Analytic (Ohio) | USD 25 to 40 | Fast turnaround |
| US private lab | Waypoint Analytical (TN + regional) | USD 25 to 40 | Strong South + Midwest coverage |
| Canada nationwide | A&L Canada Laboratories (London, ON) | CAD 45 to 65 | Largest private lab; ships nationwide |
| Canada (BC, AB, ON, QC) | ALS Canada | CAD 40 to 60 | Multiple labs; fast turnaround in the West |
| Quebec | MAPAQ (public lab) | CAD 35 to 50 | Tests in French or English |
| British Columbia | BC Ministry of Agriculture | Varies | Partners with private labs |
| Alberta | Alberta Innovates (formerly AB Soil Testing) | CAD 30 to 45 | Provincial service |
| Saskatchewan | SK Soil Testing Lab (U of Saskatchewan) | CAD 30 to 45 | University-run |
| Manitoba | Manitoba Agriculture Soil Testing | CAD 30 to 45 | Provincial |
| Nova Scotia | NS Soils Lab (Bible Hill) | CAD 30 to 50 | Residential service available |
| Prince Edward Island | PEI Analytical Services (Charlottetown) | CAD 30 to 50 | Provincial |
| New Brunswick | NB Department of Agriculture (Fredericton) | CAD 30 to 50 | Provincial |
Quick reference: retest cadence and when NOT to test
| Scenario | Cadence | Notes |
|---|---|---|
| Established lawn | Every 2 to 3 years | Cool-season lawns drift slowly |
| Stable beds (shrubs, perennials, trees) | Every 2 to 3 years | Same as lawn |
| Active vegetable garden | Annually | Heavy N + high-residue crops drift faster |
| After major amendment (lime, sulfur, compost) | 6 to 12 months later | Soil needs time to equilibrate |
| After land-use change (tree removal, irrigation, deck) | Within 6 months | Previous results may not apply |
| New property | First season | Inherit unknown amendment history |
| Within 2 weeks of fertilizer or lime | Do NOT test | Nutrient readings artificially high |
| Right after heavy rain | Do NOT test | Wet soil skews readings; wait 3 to 5 days |
| Peak summer drought | Do NOT test | Low moisture skews readings |
Notes & observations
Frequently Asked Questions
Why track soil tests and amendments separately?
Three reasons. (1) Cause-and-effect: when the lawn yellows or the tomatoes drop blossoms, the log tells you whether the amendment 6 months ago was on the right zone at the right rate. Memory exaggerates. (2) Drift detection: pH drifts down 0.1 to 0.3 per year in humid climates from acid-forming nitrogen fertilizer and rain leaching calcium. A 3-year trend table spots drift before it costs yield. (3) Lab cost optimization: lab tests cost USD 25 to 50 (CAD 35 to 65); a log tells you when the previous test is still valid (within 2 years for stable beds, 1 year for active vegetable gardens). A paper tracker takes 2 minutes per entry and pays back many times over.
How often should I update the pH trend table?
Once a year, ideally at fall close-down or spring start-up. The trend table only needs one pH reading per zone per year; that reading comes from the most recent soil test (lab or strip kit). Year-over-year trends are what matter: a 0.2 to 0.3 drop per year is normal in humid climates and triggers a lime application; a 0.5 or larger drop in one year flags an over-application of acid-forming N fertilizer or a fungal disease problem that needs investigation. Less than annual updating loses the trend signal.
Which Canadian lab should I use?
A&L Canada Laboratories (London, ON) is the largest private lab and ships nationwide; standard residential test CAD 45 to 65 with full nutrient panel and recommendations. ALS Canada has multiple labs across BC, AB, ON, QC and offers fast turnaround in the West. MAPAQ (Quebec public lab) tests in French or English at CAD 35 to 50. Provincial agronomy offices serve their own provinces: BC Ministry of Agriculture, Alberta Innovates, Saskatchewan Soil Testing Lab, Manitoba Agriculture, NS Soils Lab (Bible Hill), PEI Analytical Services, NB Agriculture. State-side, US residents use their state Cooperative Extension service (search "[state] cooperative extension soil test").
What is the year-over-year pH drift I should expect?
Most humid-climate residential soils drift down 0.1 to 0.3 pH per year. Three forces drive the drift: (1) rain leaches calcium and magnesium below the root zone; (2) acid-forming nitrogen fertilizers (ammonium-sulfate, urea, ammonium-nitrate) acidify the soil as they break down; (3) high-residue crops and organic matter decomposition release organic acids. Arid-climate soils drift up over time as evaporation concentrates calcium and other base cations. A 0.5 or larger drift in one year flags a problem worth investigating; consult cooperative extension or a provincial agronomy office.