Lawn and Landscape Irrigation

Many urban landscapes have a forlorn narrow planting strip between the curb and sidewalk, otherwise known as a “hell strip”. Healthy curbside plantings help filter and absorb rainwater, preventing landscape fertilizers and other pollutants from entering storm drains.

Drought conditions have led to stress in established trees and difficulty starting young trees. With the need for supplemental watering, correct irrigation practices are important to tree health and efficient water use. Fall is tree planting time and an important time to water established trees in the absence of adequate precipitation. Whether a new tree or an established tree, correct watering is important. Too little as well as too much water can lead to tree stress, a decline in growth, and water waste.

As we are ending 2023, the temperature high and/or low could be consistently at or less than 32°F with a possible chance of snow precipitation. For turfgrass areas in December, the process of dormancy for both warm and cool-season grasses has already occurred. In regards to water use in dormant lawns in cooler temperatures, December is not the time to use irrigation in grass areas. The Photo above is from Pioneer Underground Lawn Sprinklers. https://pioneerunderground.net/sprinkler-winterization-omaha/

With ongoing drought, conserving water in home, business and public landscapes is important. One way to conserve water is selecting drought tolerant plants. As a rule, a drought tolerant plant is one that can survive on average rainfall with little or no supplemental water once established.

Fungi can be very problematic for our plants, and there are a lot of different fungi. In plants, there is a disease triangle that leads to plant diseases. For disease to develop, you must first have a pathogen, a susceptible host, and a favorable environment. Pathogens are common in the environment and just waiting for the right weather to occur and a susceptible host to infect. The environment can sometimes be altered by our plant management practices, such as overwatering or underwatering and improper irrigation practices can lead to more disease problems. That’s why it's so important, whenever possible, to choose disease resistant plants for our landscapes – both turf, fruits, vegetables and ornamentals.

Mulching landscape beds and gardens is a waterwise practice. Conserving soil moisture, controlling weeds, mitigating soil temperature extremes, and improving soil health are key benefits.

One of the most important factors in getting plants off to a good start is watering. Overall, the best guidance is to water to the bottom of the roots and to keep the roots of new plants moist, not soggy or dry. Inserting a screwdriver into the soil will help with determining the moisture content by gaining a sense required to push it in and also to feel the soil particles that stick to the blade. If they feel muddy, then water is likely being applied too often; if it’s dry and powdery, then it needs to be applied more frequently.

As we move into the heat of the summer, we need to remember proper irrigation practices for our plants. It is just as easy to overwater as it is to underwater plants. And remember that irrigation practices differ among all different types of plants.

Compost is used as a soil amendment to improve the physical, chemical and biological properties of soils. Over time, yearly additions of compost will improve your landscape or garden soil in many ways including the water holding capacity of sandy soils and water percolation in clay soils. 

‘Right Plant, Right Place’ is a very important aspect of planting and it is never too early to start thinking about landscape changes for next year. As you clean up and refresh mulch or water, start assessing your landscape and what did and didn’t work. There are some very important plant requirements to keep in mind when planning a new garden or adding to an established garden.