Fall is the ideal time to start a garden or improve an existing landscape. Get advice at Fall Garden Day, 9 a.m.-noon Oct. 12 at Harris County Texas AgriLife Extension Service office and gardens, 3033 Bear Creek Drive.
Extension horticulturist and Master Gardeners will offer presentations on a range of topics, including drought- and disease-damaged lawns. See the schedule under special events at hcmga.tamu.edu.
Registration, which includes an information booklet, is $15 in advance or $20 (at 8:30 a.m.) at the door. Call 281-855-5600.
Extension horticulturist Skip Richter shares his advice on greening grass.
Fall lawn care:
1. Water deeply, infrequently and only as needed. Watering too often results in soggy conditions that discourage deep root development and promote disease. With the heat giving way to cooler temperatures, applying ½ to 1 inch of water every seven to 10 days is plenty, Richter says.
2. Mow often. Frequent mowing promotes a denser, better-looking lawn. Infrequent mowing is more stressful to the grass and can open areas that allow light to reach the soil surface and allow weed seeds to germinate.
3. Fertilize mid to late October. Choose a product with a 3-1-2 or 4-1-2 ratio of nitrogen, phosphorus and potassium. Apply 1 pound of nitrogen per 1,000 square feet of lawn. To calculate: Divide the first number (nitrogen) on the fertilizer bag into 100 to determine how many pounds of the product are needed to apply 1 pound of nitrogen.
4. Stop weeds before they’re a problem. Cool-season weeds begin germinating late September to mid October. Preventative products must be applied before the weeds sprout. Apply a half inch of finely screened mulch to help cover the soil surface and deter some weed germination while feeding the turf over the coming months. A dense, healthy turf is the best weed control.
5. Don’t overseed a St. Augustine lawn in fall. Green winter rye lawns are pretty, but that means more fertilizing, mowing and sometimes watering through the winter. It also results in a stressful spring transition when St. Augustine attempts to begin growing but is shaded by winter turf that also competes for water and nutrients.
6. Identify the trouble before purchasing and applying control products. Your extension office can diagnose lawn problems and identify weeds to help you make the best choice.