Milorganite Slow-Release Nitrogen Fertilizer (6-4-0) Review

Application window: Bermuda and zoysia: May through August. Centipede: one light feeding, and that is the whole programme

Application window: UAF gives fertilizer analyses rather than pounds of nitrogen. Minimum maintenance is 5 lb of 22-11-11 per 1,000 sq ft in spring and again in late summer. A premium programme is 5 lb of 22-11-11 in late May, 5 lb of 22-4-4 in late June and again in July, then 5 lb of 8-32-16 in late August or early September — the last one deliberately low in nitrogen and high in phosphorus and potassium to build winter reserves

Application window: Bermuda: light monthly feedings May–September, plus iron for alkalinity yellowing

Application window: Bermuda and zoysia: May through August. Fescue in the north: September and October only

Application window: Fescue: October–November and March–April; Bermuda: May–August

Application window: CSU splits it by grass: bluegrass and ryegrass take 0.5–1 lb N mid-March to April, 1 lb May to mid-June, none July to early August, 1 lb mid-August to mid-September and 1–2 lb early October to early November — buffalograss and blue grama invert that entirely, taking nitrogen only from May to early August

Application window: UConn's two dates are May and early September, with a third in June only if you bag the clippings — 2 lb of nitrogen per 1,000 sq ft a year if clippings are returned, 3 lb if removed, and never more than 1 lb of soluble N at once. Nothing before April 15 or after mid-October

Application window: Delaware is a soil-test state by law and by Extension practice — the University of Delaware declines to publish blanket rates and tells you to follow the report. The autumn feeding is the one that carries a transition-zone lawn; 3 DE Admin. Code 1204 sets per-application limits, no-application periods and setbacks on top of that

Application window: April–May and September–October (check local summer blackout ordinances)

⚖️ Florida's Urban Turf Rule limits phosphorus applications unless a soil test shows deficiency — and many counties add a June–September nitrogen blackout.

Application window: Bermuda: monthly light feedings from full green-up (late April) through August

Application window: Rate follows species: hybrid bermudagrass has the highest requirement, zoysia, St. Augustine and seashore paspalum are intermediate, and centipede needs the least. Because growth never stops and the soils leach, the pattern is lighter and more frequent rather than two or three big applications — and seashore paspalum wants nitrate-N rather than ammonium-N during establishment

Application window: UI publishes a five-slot schedule for a medium-to-high maintenance bluegrass lawn: half to one pound of nitrogen per 1,000 sq ft in mid-March or April, one pound in early May or June, NOTHING in July or early August, one pound in mid-August or September, and one to two pounds in early October or November with the higher rate optional. A season total runs anywhere from 0.5 to 5 lb depending on the quality you want; a low-maintenance tall fescue lawn sits at 2 to 4 lb

Application window: Labor Day and Halloween feedings do 80% of the work; optional light Memorial Day application

⚖️ Some Illinois municipalities restrict phosphorus lawn fertilizer — check local ordinances.

Application window: Purdue's five slots: up to 0.75 lb slow-release in April, 0.75–1.0 lb in May, 0.75 lb in July on irrigated lawns only, 1 lb in September, and 1.5 lb of fast-release urea in November after the final mowing while the grass is still green

Application window: Early September and late October — the fall programme carries an Iowa lawn

Application window: K-State splits this by species rather than by month. Tall and fine fescue: about 1 lb of nitrogen per 1,000 sq ft, applied in autumn. Zoysia: 1 to 1.5 lb, in early summer. Buffalograss: the least of any Kansas lawn grass — 1 lb in early June improves colour and density, and more than that makes it weedy

Application window: Fescue and bluegrass: September and late October. Check the soil test before buying anything with a middle number — Inner Bluegrass limestone soils routinely test phosphorus-sufficient already

Application window: St. Augustine takes at least 1 lb of nitrogen in June and again in early to mid-August, up to about 3 lb a year, applied from midspring to midsummer

Application window: UMaine is specific and restrained: no more than two pounds of nitrogen per 1,000 sq ft a year, and if you feed once, do it between August 15 and September 15. Any remainder goes down in May after spring green-up, not before it

Application window: Tall fescue feeds September and late October — and the state's blackout starts November 16, which is earlier than most neighbours

Application window: Late spring and early September, with a late-October application where the rules allow — the season is short enough that timing matters more than rate

Application window: April through October, and MSU is specific that applications should go down before November — later nitrogen leaches over winter rather than feeding the grass

Application window: The University of Minnesota scales nitrogen by maintenance level AND soil organic matter: a low-maintenance unwatered lawn takes a single September application of 0.5–1 lb, while a watered lawn with clippings removed takes four — August, September, early October and May–June — and no single application should exceed 1 lb per 1,000 sq ft

Application window: Bermuda: May through August. Centipede: one light feeding a year and nothing more

Application window: Fescue: September and late October, with a light spring feeding at most; zoysia and bermuda: May through August

Application window: MSU's figure for most Montana conditions is 2 to 4 pounds of actual nitrogen per 1,000 sq ft a year, split into two or three applications, with never more than 1½ pounds of available nitrogen going down at once. It also warns off high-nitrogen and rapid-release products specifically because they promote disease. A spring seeding gets a ½ lb nitrogen starter before the seed

Application window: UNL publishes dates, not seasons, for cool-season lawns: April 15–25 at 0 to 0.5 lb of nitrogen per 1,000 sq ft, May 25–June 5 at 0.5 to 0.75, August 25–September 5 at 0.5 to 0.75, and October 15–November 1 at 0 to 0.25. Western Nebraska shifts one to two weeks later in spring and one to two weeks earlier in autumn. Buffalograss and zoysia get one application, May 5–15, at about 0.5 lb — and buffalograss should never exceed 2 lb a year

Application window: Bermuda in the south: May through August. Tall fescue and bluegrass in the north: spring and early autumn

Application window: One to two pounds of nitrogen per 1,000 sq ft a year is UNH's range for a home lawn — lower than the coastal states south of here. The last application of the year should be down before September 15 in northern New Hampshire and October 1 in the south

Application window: Legally March 1 – November 15 for homeowners (professionals get to December 1), and capped at 3.2 lb of nitrogen per 1,000 sq ft a year — weight it to September and October

Application window: New establishment gets 0.5 to 0.75 lb of nitrogen per 1,000 sq ft every other week for six to eight weeks. After that the calendar follows the grass, not the state: cool-season lawns in the north feed spring and autumn, warm-season lawns in the south feed through the warm months and stop well before dormancy

Application window: September is the one application Cornell recommends at every level of lawn quality; May, June and October are optional extras, and no application may exceed 1 lb of nitrogen per 1,000 sq ft

Application window: Fescue feeds in fall: September, October and late November — never in summer

Application window: NDSU is emphatic that autumn is the most important time. If you feed once a year, feed in September and target Labor Day; a fuller programme is two applications of 0.75 to 1.0 lb of nitrogen per 1,000 sq ft, one in early to mid-September and one around the final mow. Nitrogen applied before September 15 should be about 50 percent slow-release

Application window: September and early November (winterizer) carry the lawn; optional light feeding late May

Application window: Bermuda and zoysia: May through August. Buffalograss wants almost none — feeding it is how people lose it to weeds

Application window: Light and frequent through spring and autumn west of the mountains; east-side lawns follow a shorter, more conventional cool-season programme

Application window: September and late October, and the state closes the window on December 15 — the tightest legal autumn sequence of any state here, because the rate caps limit how much can go down in each of those passes

⚖️ Pennsylvania's fertilizer law restricts phosphorus to soil-test need, new seedings or repairs.

Application window: Late spring and early September, with the September application doing most of the work. The Water Resources Board's statewide guidance asks for moderate rates and never above label — and municipal ordinances in the bay towns cap it far below that

Application window: Centipedegrass takes nitrogen in May and once in late summer only, 1–2 lb a year total; the last application goes down before August 15 in the Upstate and before September 1 on the coast

Application window: SDSU puts the emphasis late and scales it to how you keep the lawn: a low to moderate maintenance lawn gets one application about Labor Day; a moderate to high maintenance lawn gets one in late August to very early September and a second roughly four weeks later, around October 1

Application window: Fescue: September through November; Bermuda and zoysia: May through August

Application window: Late April after full green-up, June, and early September

Application window: Late spring and early September, kept modest — pushing growth in a place where every inch of it is irrigated costs water as well as fertilizer

Application window: Late spring and late August to early September, with the late-summer application carrying the year. Get it down early — the growing season closes fast north of Rutland

Application window: Cool-season lawns take 2.0–3.5 lb of nitrogen a year across September, October, November, April and May at 0.5–0.7 lb a month; bermuda and zoysia are fed only between April 1 and August 15

Application window: Mid-May only if the lawn is thin or yellow, then September–October; slow-release synthetic as late as mid-November

Application window: Autumn carries a transition-zone lawn, so the September feeding is the year's most valuable. Nitrogen is the one nutrient required regardless of what the test says; phosphorus, potassium and lime should all follow the report, which in West Virginia usually asks for lime

Application window: About 2 lb of nitrogen a year in total: roughly 1 lb at the second mowing in spring and 1 lb between September 1 and 15, with any summer application kept under 1 lb and only on irrigated lawns

Application window: UW's numbers are the lowest of any state we cover, and deliberately so: 1 to 2 pounds of nitrogen per 1,000 sq ft a year produces a very nice lawn in most of Wyoming, never more than 1 pound in a single application, and one to two applications a year is the manicured programme. For Kentucky bluegrass or tall fescue specifically, UW suggests considering fertilizing once every one to three years. Use quick-release in spring while soils are still cool, and switch to slow-release or organic once they warm