Lawn & Garden

The yard is where timing matters most, and where a calendar is most likely to be wrong. Everything here is tied to a measurement or a published rate.

Guides

What kind of grass do I have?AnytimeFolded vs rolled leaves, vein pattern, and spread habit — Penn State field ID for the cool-season species most lawns are.
Mowing height by grass species — and the one-third ruleAnytimeHow high to set the deck for Kentucky bluegrass, tall fescue, ryegrass, fine fescues, and bermudagrass — and why the one-third rule is the trigger for when to mow, not the day of the week.
Grass seed rates by species: new lawn vs overseedingAnytimePublished lb per 1,000 sq ft for KBG, tall fescue, ryegrass, fine fescue, and bermudagrass — and how the overseeding rate differs from establishment.
Crabgrass pre-emergent: a narrow window, and how to hit itSpringApply as soil rises through 50–55°F, before germination. Three weeks off is the same as not doing it.
Seeding a warm-season lawn: rate, timing and what actually takes seedSpringBermudagrass at 1–2 lb per 1,000 sq ft, soil above 65°F in spring, and which warm-season grasses are sod-only.
Fertilizing a cool-season lawn: nitrogen by the year, not by the bagFallHow much nitrogen per 1,000 sq ft by grass type, why late summer is the feeding that matters, and how to turn a bag analysis into a real rate.
Fertilizing warm-season turf: bermudagrass and zoysia timing by seasonSummerSpring green-up through late summer is the window. Dormant warm-season turf takes no nitrogen — and late-season applications are the leading cause of winter injury.
Lawn dethatching: the ½-inch rule, right timing, and how to not wreck your lawnFallThin thatch (≤½ in) helps; many extensions start management above ½ in, and Penn State/UMD treat ~1 in as the clear removal threshold — plus timing by grass type so recovery is possible.
Core aeration: when to do it, why plug beats spike, and seeding right afterFallTiming by grass type, why plug aerators relieve compaction while spikes can worsen it, and why seed works best the same day — immediately after core aeration.
Overseeding a lawn: rate, timing and the part people skipFallHow much seed per 1,000 sq ft, why soil temperature decides the date, and why seed-to-soil contact beats the bag you buy.
Mulching leaves into the lawn instead of bagging themFallHow thick a layer of shredded leaves the turf can take, how many passes it needs, and when to stop and haul the rest off.
Refreshing mulch in landscape beds: depth, distance and timingSpring2–4 inches of organic mulch, pulled back from every trunk, refreshed in mid-spring — and how to fix volcano mulch without buying more.
First frost date by region: sprinklers, faucets, and what the calendar missesFallFirst frost means cold arrived; hard freeze and ground freeze put pipes at risk. Read the window with NCEI/NWS thresholds and soil cooling — not an invented regional date.
Sprinkler winterization: when to blow out the linesFallThe date is not the trigger — the ground getting cold is. What the extension services publish about pressure, timing and when to hand it to a pro.
Sprinkler startup: after the frost window, not on a dateSpringClose the winter drains, pressurize slowly to avoid water hammer, test each zone on manual, then set the schedule.
Irrigation audit: the tuna can test and how to use the resultsSpringScatter cans across one zone, run it, measure the average depth, and calculate the run time your system actually needs — per zone, from UF/IFAS Extension's formula.
Topsoil for a new lawn: depth, prep and how much to orderSpringPenn State Extension puts the minimum at 4–6 inches of settled topsoil before seeding or sodding, with the top 2 inches blended into the subsoil to prevent drainage stall.
How to lay sod: site prep, timing and why the first 24 hours matterSpringPenn State, Mississippi State and Virginia Cooperative Extension on soil prep, pallet coverage, staggered joints, rolling and watering — the steps that decide whether sod roots.
How deep to water a lawn (and how often)SummerDeep and infrequent beats daily sprinkles — root-zone depth from UMN, Purdue and Texas A&M, plus how the tuna-can audit turns depth into run time.
How to repair bare spots in a lawnFallCut the edge, work the soil, seed at published rates, keep contact moist — the small-patch path that feeds into full overseeding when the damage is bigger.
Lawn soil pH and when to limeAnytimeTargets by species from Penn State and NC State, per-application caps, and why a soil test beats guessing bag rates.
Growing a lawn in shadeAnytimeHours of sun decide whether fine fescue works or you should stop fighting and plant a groundcover — Purdue, Penn State and Rutgers.
Compost topdressing for lawnsFallAbout a quarter inch after aeration — enough to feed the surface without burying crowns. Penn State and Cornell rates.
Last fall mow and winter canopy heightFallWhat MSU, Purdue, UMN and Ohio State publish about the final cuts, canopy height into dormancy, and snow-mold risk language — not a single national inch.
How to winterize a lawn mower: drain fuel or stabilize?FallAfter the last mow: empty the tank or stabilize (extensions split), change the oil, protect the cylinder, and store dry — with STOP rules from Ohio State and CSU.
Fall snow blower prep: fuel, fluids, and safety before the first stormFallIllinois fresh gas + stabilizer, oil and plug checks, and the CPSC hard STOP — never clear the chute with your hands.
White grubs in lawns: damage, timing, and treatment windowsSummerScout thresholds from OSU, Cornell and Kentucky Extension, preventive vs curative windows, and when to hand chemicals to a pro.
Fall bulb planting: wait for cool soil, not a calendar dateFallTulips and daffodils go in when soil drops below about 60°F (Rutgers) or around 50–55°F (Wisconsin) — and not more than six weeks before first frost (Penn State Chester).
Fall tree planting: roots first, flare at grade, no mulch volcanoFallHole 2–3× the root ball, flare at grade, mulch pulled back from the trunk — ISA, Iowa State and the Forest Service, not a national October 15 deadline.
Perennial winter cutback: what to cut in fall, what to leave standingFallCut diseased mush (hosta, botrytis peony); leave healthy stems 8–24 in for cavity nesters (Xerces, Cornell) until spring.
Rain barrel winterization: drain, disconnect, and redirect before freezeFallSame freeze season as hose bibs. Empty the barrel so ice cannot split it, and send the downspout away from the foundation.
Winter watering: thaw-day soaks for evergreens, and when frozen ground means stopWinterDesiccation on thaw days when soil is unfrozen (CSU for dry Interior West); UMN: stop if the ground is frozen, even if the air is above freezing.
Snow mold: pink vs gray, last-mow height, and what to do at meltWinterPrevention is last-mow height and late nitrogen — not a residential spray calendar. Fungicide rates stay on the label or with a pro.
Deicing salt and lawns: how NaCl injures turf, and what to use insteadWinterUMN and Wisconsin rates and distances, sand:salt mixes, and why “pet-safe” is not a published standard (AVMA).

The frost deadline is shared with outdoor faucets— a five-minute job on the house side of the same freeze. We publish a few good guides a week, not hundreds.

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