Short answers, with sources

Answers, each with its source.

Q1When to fertilize tall fescue in Virginia?The fertilizing windows for tall fescue in Virginia are Aug 15 to Oct 31 and Mar 1 to May 31, per Virginia Cooperative Extension (Virginia Tech), 2025. Preferred nitrogen timing is fall: up to 0.7 lb water-soluble N per 1,000 sq ft every 3 to 4 weeks. Months are read from the chart mark and are approximate; test the soil every 3 to 4 years. Second-best nitrogen timing, March to May: 0.25 to 0.5 lb water-soluble N per 1,000 sq ft every 4 to 8 weeks.
Q2When to seed tall fescue in Virginia?Seed tall fescue in Virginia from Aug 15 to Oct 15 and from Mar 1 to May 31, per Virginia Cooperative Extension (Virginia Tech), 2025. Preferred seeding time for initial establishment or renovation. The chart marks it across the August to October columns; the dates are this site's reading of the mark, so treat them as approximate for all of Virginia. Second-best seeding time, March to May. Fall seeding is preferred.
Q3When to seed bermudagrass in Georgia?Seed bermudagrass in Georgia from May 1 to Jul 31, per University of Georgia Cooperative Extension (2023). Best months for seeding a new bermudagrass lawn are May to July (April and August are possible): 4 to 8 lb unhulled or 1 to 2 lb hulled seed per 1,000 sq ft. UGA notes locations can shift this schedule; adjust for your part of Georgia.
Q4When to fertilize bermudagrass in Georgia?The fertilizing window for bermudagrass in Georgia is May 1 to Aug 31, per University of Georgia Cooperative Extension (2023). Best months May to August (April and September possible); 2 to 5 lb N per 1,000 sq ft a year. Do not apply nitrogen in spring until soil at 4 in is constantly 65 F and rising.
Q5When to seed centipedegrass in Georgia?Seed centipedegrass in Georgia from May 1 to Jul 31, per University of Georgia Cooperative Extension (2023). Best months for seeding a new centipedegrass lawn are May to July (August possible): 0.25 to 1 lb per 1,000 sq ft. Overseeding with ryegrass is not recommended.
Q6When to seed tall fescue in North Carolina?Seed tall fescue in North Carolina from Aug 15 to Oct 1, per NC State Extension (2021). Overseed thin or bare areas as the weather cools: August 15 to September 1 in the western region, September 1 to October 1 in the Piedmont and coastal plain; 6 lb of turf-type tall fescue seed per 1,000 sq ft. Pick the window for your part of the state.
Q7When to put down crabgrass preventer on a tall fescue lawn in North Carolina?Preemergent weed control for tall fescue in North Carolina runs from Mar 1 to Mar 31, per NC State Extension (2021). Preemergent herbicide for crabgrass, goosegrass and foxtail. The calendar says it is best applied in early March, sooner in the Piedmont and coastal regions; the whole month is shown.
Q8What height to mow bermudagrass in North Carolina?Mow bermudagrass in North Carolina at 1 to 2.5 in, per NC State Extension (2021). The mowing season shown on this site runs from Mar 1 to Nov 30. Acceptable heights run 5/8 to 2.5 in; most lawns are kept between 1 and 2.5 in. Mowing below 1 in needs a reel mower and level ground. Raise the height 1/2 in before frost.
Q9What height to mow bermudagrass in Texas?Mow bermudagrass in Texas at 1 to 2 in, per Texas A&M AgriLife Extension Service. The mowing season shown on this site runs from Mar 1 to Oct 31. Mow at 1 to 2 in weekly, or as often as needed to prevent scalping; never remove more than 1/3 of the leaf at once.
Q10What height to mow St. Augustinegrass in Texas?Texas A&M AgriLife Extension Service (2022) gives 2 to 4 in as the mowing height for St. Augustinegrass in Texas. The mowing season shown on this site runs from Mar 1 to Oct 31. Mow at 2 to 4 in weekly, or as often as needed to prevent scalping; never remove more than 1/3 of the leaf at once.
Q11What height to mow Kentucky bluegrass in Ohio?Ohio State University Extension, Lake County (2007) gives 2 to 2.5 in as the mowing height for Kentucky bluegrass in Ohio. The mowing season shown on this site runs from Apr 1 to Nov 30. Bluegrass, perennial ryegrass and fine fescues are mowed at 2 to 2.5 in; never remove more than 1/3 of the blade. A 2025 Ohio State article advises 3 to 4 in.
Q12What height to mow tall fescue in Ohio?Ohio State University Extension, Lake County (2007) gives 2.5 to 3 in as the mowing height for tall fescue in Ohio. The mowing season shown on this site runs from Apr 1 to Nov 30. Tall fescue is mowed at 2.5 to 3 in; never remove more than 1/3 of the blade. A 2025 Ohio State article advises 3 to 4 in.
Q13When to fertilize a Kentucky bluegrass lawn in Ohio?The fertilizing windows for Kentucky bluegrass in Ohio are Apr 1 to May 31 and Oct 1 to Nov 30, per Ohio State University Extension, Lake County (2007). Without a late-fall application: 1/2 lb actual N per 1,000 sq ft about April 1 and again about May 25. After a late-fall application: one spring application, in late April or early May, of no more than 3/4 lb N. Calendar is written for northeastern Ohio and covers all of Ohio only approximately. Late October or early November, after the first hard frost while the grass is still green: 1 lb N per 1,000 sq ft; the calendar calls it the most important feeding of the year. Months are shown; wait for the frost.
Q14When to seed Kentucky bluegrass in Pennsylvania?Seed Kentucky bluegrass in Pennsylvania from Aug 15 to Oct 15, per Penn State Extension. Late summer is the optimum time to seed in most of Pennsylvania (late August and early September); seeding later than mid-October is not suggested. Start date is interpreted from 'late summer'.
Q15When to apply crabgrass preventer in Pennsylvania?Preemergent weed control for Kentucky bluegrass in Pennsylvania runs from Mar 15 to May 15, per Penn State Extension. Preemergence herbicide for crabgrass in early to mid-spring: March 15 to April 15 in southeastern Pennsylvania, April 1 to May 1 in other areas, April 15 to May 15 in the northern tier and high-altitude counties. The union is shown; use your area's window.
Q16When to seed tall fescue in Missouri?Seed tall fescue in Missouri from Sep 1 to Sep 30, per University of Missouri (Integrated Pest Management), 2015. Fall seeding around mid-September; seeding in April or May is often a losing proposition because summer stress follows. Whole month shown.
Q17When to plant zoysiagrass in Missouri?Seed zoysiagrass in Missouri from May 15 to Jun 10, per University of Missouri (Integrated Pest Management), 2015. Sprig, sod or seed warm-season grasses in mid-May to early June (interpreted as May 15 to June 10). The popular 'Meyer' zoysiagrass is not available as seed; it is sodded, plugged or sprigged.
Q18When to fertilize St. Augustinegrass in South Carolina?The fertilizing window for St. Augustinegrass in South Carolina is May 1 to May 31, per Clemson Cooperative Extension (Home & Garden Information Center), 2018. 1/2 to 1 lb N per 1,000 sq ft in early May after the lawn fully greens up (whole month shown). Do not apply nitrogen from January to April or from September to December. Dates are for South Carolina as a whole; coastal and central areas run earlier than the piedmont and mountains.
Q19When to put down preemergent on bermudagrass in South Carolina?Preemergent weed control for bermudagrass in South Carolina runs from Feb 15 to Mar 31 and from Sep 1 to Sep 30, per Clemson Cooperative Extension (Home & Garden Information Center), 2018. Preemergent herbicide: mid-February in coastal and central areas, mid-March in piedmont and mountain areas. End date is interpreted. Preemergent herbicide in September, with a second application 8 to 10 weeks later.
Q20How much water does bermudagrass need in North Carolina?Water bermudagrass in North Carolina from Mar 1 to Aug 31, per NC State Extension (2021). About 1 inch of water a week while the grass is growing; supplement rainfall as needed. The calendar gives this for March to May and says to follow it in June to August.