
Lawn Care Guides
Best Lawn Aerator: Two of the Three Options Make It Worse
MSU: solid-tine aeration pushes soil sideways and increases compaction. That rules out spike rollers and aerator sandals. Hollow tines or nothing.

Tow-Behind Core Aerator
★★★★☆ 4.2/5
our editor rating how we score$300–$400
Typical price · A 48 in swath with overlapping passes — the option for a half-acre and up, and it needs a riding mower to pull it
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Its 94 lb frame does not pull a full-depth plug on its own. The manual says up to 140 lbs of sand or four concrete blocks may go in the tray — that ballast is what turns it into a core aerator.
The honest answer to the gap a manual coring tool leaves, if you already own something to tow it with. The mechanism is right: Agri-Fab's own manual defines the job as "pulling small soil plugs, ranging up to three inches in length, from the soil", so these are coring knives rather than the solid points that press soil sideways. What the listing does not tell you is that the machine as delivered is not heavy enough to do that. The manual's instruction is that "up to 140 lbs. of weight, such as bags of sand or (4) concrete blocks, may be added to the tray" to increase penetration — on a 94 lb unit, that is more than doubling the working weight, and it is the difference between a plug and a dent. Budget for the ballast and a way to strap it down. Two more instructions from the same page are worth knowing before you buy: if the ground is hard and dry it wants watering "for one or two hours prior to aerating", and you must not aerate wet or muddy ground at all — which is a narrower moisture window than most people plan for. And unusually, Agri-Fab recommends raking the plugs up rather than leaving them, because plugs from a towed machine come up with small rocks and gravel that damage mower blades. That contradicts the standard advice to leave cores on the surface, and it is a real cost in labour on a large lawn.
Product type
Tow-Behind Core Aerator
Active ingredient
None — 32 galvanised plugger knives on a 48 in drum, weight tray, universal hitch
Price range
$300–$400
Coverage
A 48 in swath with overlapping passes — the option for a half-acre and up, and it needs a riding mower to pull it
Best for
Core-aerating a half-acre or more behind a riding mower, with ballast in the tray — not a purchase that makes sense without a tow vehicle
our editor rating
4.2 out of 5
Correctly carries no EPA registration
Adjuvants, dyes, devices and minimum-risk products are not registered pesticides, so an empty registration number here is right rather than missing.
Not a pesticide — nothing to register. Specifications and every operating quotation in this record were read from Agri-Fab's own owner's manual for model 45-0299 (https://www.agri-fab.com/Portals/0/Manuals/45-0299.pdf) on 2026-08-20: 48 in width, 32 plugger knives, 94 lb unit weight, plugs up to three inches, weight tray rated to 140 lbs of added ballast. retailer_rating is deliberately omitted — the Amazon listing renders its rating in script and we did not read a figure, and an estimated rating is worse than none.
Where this page and the container disagree, the container wins — the label is the legal authority on rates and restrictions. How to read one yourself.
Matched against each state's actual disease, weed and pest pressure.
Application window: Sod or plug warm-season lawns May through July while they are actively spreading
Application window: The beginning of June to mid-July, which is the exact opposite of the late-August window that works in almost every other state. Kentucky bluegrass goes down at 2½ to 3 lb per 1,000 sq ft, red fescue at 3½ to 4 lb
Application window: The desert ritual: scalp Bermuda and overseed perennial ryegrass late September – mid October for a green winter lawn
Application window: Sprig or sod bermuda May through July; overseed Ozark fescue in September
Application window: Seed fescue in October with the first rains, or in April
Application window: Late April through May, or mid-August through mid-September
Application window: August 15 to mid-September is the window; October 4 is the outside date. Once soil drops below 50°F germination stalls and the seedling that did come up has no root by the first hard frost
Application window: Late August through September for tall fescue, and that window is not negotiable here — spring-seeded cool-season grass in Delaware meets its first summer without a root system. Zoysia goes in as sod or plugs in June, once soil is thoroughly warm
Application window: April–July (warm-season establishment)
Application window: Sod or sprig warm-season lawns May through July; the Blue Ridge counties are the exception, where tall fescue is overseeded in September like a northern state
Application window: Any time of year, given water. Sod, sprigs and plugs are the normal route for the species grown here; the limiting factor is irrigation on the leeward side, not the calendar
Application window: Late August into September is the window. Bluegrass takes 10 to 20 days to germinate, so UI suggests a straw mulch or a small percentage of perennial ryegrass in the mix to hold the seedbed while the bluegrass comes up
Application window: August 15 – September 15 is the prime seeding window statewide
Application window: August 15 to September 15 in central Indiana; reseeding starts from the middle of August
Application window: August 15 to September 15, and that is not a guideline so much as the whole opportunity: seed after it and the crowns will not root before freeze-up
Application window: Tall fescue goes in from late August into September. Warm-season lawns — zoysia, bermuda, buffalograss — go in late May through July as sod, sprigs or seed, once soil is thoroughly warm
Application window: Overseed fescue and bluegrass mid-August to early October — the most productive month of the Kentucky lawn year
Application window: April through July, by sod, plugs or sprigs — St. Augustine cannot be seeded
Application window: Mid-August into early September, matching the same late-summer window as the feeding. Spring seeding means nursing the stand through the summer with a short season to recover in
Application window: Mid-August through mid-October, with late August to mid-September the reliable window before the blackout complicates feeding
Application window: Mid-August to mid-September, and that window is genuinely narrow: seed later and the seedlings do not root before the ground freezes
Application window: Mid-August through mid-September, before the soil cools
Application window: Mid-August into early September; the window is short and closes early this far north
Application window: Sod, sprig or plug warm-season lawns May through July
Application window: Overseed fescue late August to early October; plug or sod zoysia in early summer while it is actively spreading
Application window: Late August into early September is the reliable window; spring seeding works but commits you to carrying the stand through a hot dry summer on irrigation
Application window: Late August into mid-September for bluegrass and tall fescue — the same window as the most important feeding. Buffalograss and zoysia go in late May through June, once soil is warm
Application window: October for tall fescue in the south; sod bermuda in early summer. Northern Nevada follows a conventional September window
Application window: August 15 to September 30 is the window UNH names, and in the North Country the useful part of it is the first half. Spring seeding works between March and May but commits you to nursing the stand through summer
Application window: Late August through late September, before the soil cools
Application window: Warm-season lawns go in from late spring through midsummer once soil is thoroughly warm; cool-season lawns in the north go in late August into September. Establishment irrigation is the whole battle in either case
Application window: Mid-August through late September; Long Island can run into early October
Application window: Core-aerate and overseed tall fescue mid-September to mid-October — the defining NC lawn ritual
Application window: August 15 to September 1 for overseeding lawns thinned by summer — the soil is still warm and germination is fast. Past early September a North Dakota seedling meets winter without a root system
Application window: Mid-August to mid-September is prime seeding; spring is second-best
Application window: Sprig or sod bermuda May through July; seed buffalograss in late spring once soil is warm
Application window: September is ideal and April works — the mild wet autumn is one of the most forgiving seeding windows in the country
Application window: Mid-August through late September; dormant seeding possible in December
Application window: September is URI's month for seeding, and it is short: the coast holds soil warmth into October, but the seedling still needs six weeks of root growth before the ground closes
Application window: May through July, by sod, plugs or sprigs — the warm-season grasses here are not seeded
Application window: The late-season working window is August 15 to October 10 for overseeding, thatch work and repair — seed at the early end of it, because the last three weeks are for everything except germination
Application window: Overseed fescue mid-September to mid-October; sod warm-season lawns in early summer
Application window: May–July for Bermuda; avoid establishment during August heat
Application window: Late August through September is best; spring works but commits the new lawn to its first summer under irrigation
Application window: Mid-August to early September. Vermont does not have New Hampshire's spare fortnight: seed sown in late September in the Kingdom goes into winter without a root system
Application window: Mid-August through mid-October for fescue; warm-season sod and sprigs go down May through July
Application window: April–May or September; new lawns before Memorial Day or after Labor Day, and fall seeding works as late as October 15 west of the Cascades
Application window: Late August into September for tall fescue, seeded at about 3 to 5 pounds per 1,000 sq ft for the fine-leaved types. Zoysia goes in as sod or plugs in June once the soil is thoroughly warm
Application window: Late August into early September is the ideal window for seeding or sodding
Application window: Late August into early September where the season allows it; at elevation the window is narrow enough that spring seeding with irrigation is often the more realistic plan
Common questions
Agri-Fab 48 in Tow-Behind Plug Aerator (45-0299) typically runs $300–$400, covering A 48 in swath with overlapping passes — the option for a half-acre and up, and it needs a riding mower to pull it.
None — 32 galvanised plugger knives on a 48 in drum, weight tray, universal hitch.
Needs a riding mower or tractor — there is no push version of this machine
Real feedback
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Lawn Care Guides
MSU: solid-tine aeration pushes soil sideways and increases compaction. That rules out spike rollers and aerator sandals. Hollow tines or nothing.

Lawn Diseases
Illinois Extension: there are no recommended fungicides for controlling these species. Mushrooms are not a lawn disease — they are something buried, rotting.

Lawn Care Guides
Under half an inch, thatch helps. The roots live in it, so the machine rips plants out. Illinois names core aeration and topdressing as the fix instead.

Fertilizer
Lawn soil pH decides whether lime or sulfur is the fix — and the right answer inverts between Georgia and Arizona. What the soil test number means.

Lawn Care Guides
How to aerate a lawn, and when not to: spike tools compact the soil they punch through, core aeration pulls plugs out, and most lawns need it rarely.

Lawn Care Guides
When to overseed: late summer beats spring for cool-season lawns, most warm-season lawns should not be overseeded at all — and pre-emergent blocks your seed.
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