Cool Season Grasses

Cool season grasses in Oklahoma include fine & thick bladed fescue.  A few of our favorites are Tulsa, Triad & Rebel.  Keep in mind these are general tips for zone 6-7. All watering and mowing recommendations are based on the average environmental conditions. You may need to adjust the recommendations below to better satisfy your particular conditions.

January

• This is a good time to test your soil. 

•  If necessary mow at about a 2" mowing height.

February

• Over-seeding may be done late in the month.

• Water 1 inch weekly, if needed.

• Apply pre-emergent weed control late in February. 

• NOTE: We don't recommend over-seeding if you intend to apply a pre-emergent.

• Mow at about a 2" mowing height.

March

• Over-seeding may still be done the first 2 weeks of March.

• Water 1 inch weekly, if needed.

• Apply pre-emergent weed control.

• NOTE: We don't recommend over-seeding if you intend to apply a pre-emergent.

• Mow at about a 2" mowing height.

April

• Water 1 inch weekly, if needed.

• Mow at about a 2" mowing height.

May

• Water 1-2 inches weekly, if needed.

• Fertilize with 1 pound of nitrogen per 1000 sq. ft.

• Apply broadleaf week killers, as necessary.

• Apply post-emergent grass killers sparingly.

• Apply post-emergent nutsedge control late in the month.

• Mow at about a 2.5" mowing height.

June

• Water 1-2 inches weekly, if needed.

• Apply broad leafed weed killers, as necessary.

• Mow at about a 2.5-3" mowing height.

July

• Water 1-2 inches if needed.

• Mow at about a 2½-3" mowing height.

August

• Water 1-2 inches weekly, if needed.

• Apply pre-emergent weed control late in the month if no overseeding is planned in the fall.

• Mow at about a 2½-3 mowing height.

September

• Overseeding may be done late in the month.
• Fertilize with 1 pound of nitrogen per 1000 sq. ft.
• Water 1-2 inches weekly, if needed.
• Apply pre-emergent weed control.
• Apply broad leaf week killers, as necessary.
• NOTE: We don't recommend over-seeding if you intend to apply a pre-emergent.
• Mow at about a 2.5-3" mowing height.

October

• Overseeding may be done early to mid month.

• Water 1 inch weekly, if needed.

• Apply pre-emergent weed control early in the month.

• Apply post-emergent weed killers, as necessary.

• NOTE: We don't recommend over-seeding if you intend to apply a pre-emergent.

• Mow at about a 2-2.5" mowing height.

• Remove all fallen leaves, or mulch them with your mulching mower.

November

• Fertilize with 1 pound of nitrogen per 1000 sq. ft.

• Water 1 inch weekly, if needed.

• Mow at about a 2" mowing height.

• Remove all fallen leaves, or mulch them with your mulching mower.

December

• Water 1 inch weekly, if needed.

• Mow at about a 2" mowing height.

• Remove all fallen leaves, or mulch them with your mulching mower.

Other Timely Tips

• Remember: Fescue likes the shade!

• Don't use weed killers on windy days.

• Don't apply weed killers or fertilizer before an expected rain.

• Don't allow runoff when watering.

• Remember: A thick, healthy lawn is better able to resist weed growth.