But remember, you’ll be watering in vain if you’re doing so when the moisture is high and when the lows have been at or below freezing for an extended time. If average temperatures remain above the mid-40's, you can water your lawn on a weekly basis, applying whatever is necessary to bring the total amount of water to one-inch per week. If you live in a more humid climate that gets sun year around then simply curb your watering to once or twice a week for 20 minutes a zone. If your lawn has a sandier soil type, expect the ground to freeze sooner. Susceptibility increases for lawns with south or west exposures. Klett, Colorado State University Extension horticulture specialist and professor, horticulture and landscape architecture; and R. Cox, Extension horticulture agent, Arapahoe County. … Moisture and temperature are the two main factors in germination. Though plants vary, a rule of thumb is to water one inch a week (minus rainfall). The longer a cold spell endures, the more time the ground has to freeze. As a general survival rule, apply 10 gallons of water for each diameter inch of the tree. It’s a “given” for most of us. Watering at any time of day is better than not watering at all. Small established shrubs (less than 3 feet tall) should receive 5 gallons monthly. The low angle of winter sun makes this more likely on south or west exposures. Newly planted shrubs require more water than established shrubs that have been planted for at least one year. Apply water to many locations under the dripline and beyond if possible. Plan to water your tree up until temperatures dip into the 30s for a few days straight. 1/04. Higher air temperature, increased wind, and sunlight will all cause more water consumption. Water in the ground becomes ice. Webmaster | If the temperature rises above 80 degrees Fahrenheit, your lawn will need more water than usual. Start watering your lawn too early and it goes to waste as soil isn’t in the condition to sufficiently absorb it. The cold top layer insulates the levels beneath. When it’s time to water, choose an appropriate sprinkler for your lawn to save on water use. If overseeding a lawn where you have established grass, be sure to keep the seed moist by watering lightly twice a day. Newly established lawns, whether seeded or sodded, are especially susceptible. This way, it's unlikely that you'll shock the plant or damage its roots. Simply let water sit until it is the same temperature as the room. Unfortunately, as simple as lawn watering is in practice, many lawn owners get it wrong. Lawns under such stress are limited in their ability to recover from mowing and can be damaged even more. Measure with Cans. Woody plants with shallow root systems require supplemental watering during extended dry fall and winter periods. Often there is little or no snow cover to provide soil moisture from October through March. The result can include the spread of fungal disease like Red Thread, the shallow rooting of grass, the onset of moss, and the infestation of weeds and weed grasses.. Water is the best treatment to prevent turf injury (see fact sheet 5.505, Clover and Other Mites of Turfgrass.). If you live in an area that consistently gets snow over the winter seasons then you can stop watering around the end of September or October because at that time your lawn is going into dormancy. Fertilizing: Do not fertilize tall fescue after March 15. Watering Guidelines. Weakened plants also may be subject to insect and disease problems. Plants receiving reflected heat from buildings, walls and fences are more subject to damage. CSU A-Z Search Water only when air temperatures are above 40 degrees F. Apply water at mid-day so it will have time to soak in before possible freezing at night. Don’t Stop Watering Your Lawn in Fall. The rule of thumb for lawns is to water one-inch deep each time you water. If you want a healthy, growing, green lawn, you need to pay attention to ground temperature, or at least ensure your lawn care company is paying attention. Winter watering combined with mulching can prevent this damage (See fact sheet 7.214, Mulches for Home Grounds.). Wherever you live, Extension’s job is to determine what issues, concerns and needs are unique to each community, and offer sound and effective solutions. Decrease amounts to account for precipitation. Anticipate needing to water your lawn during the fall to keep your grass healthy and prepared for the long-term. Grass clippings decompose quickly and do not contribute to thatch. How much should you water your lawn? Tip #4: When in Drought. It’s not uncommon for our clients to ask – should I water my lawn in the winter? Contribute to thatch ’ t in the fall season rainfall or after irrigation day,... 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