Summer Irrigation

— Written By and last updated by Nancie Mandeville
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lawn irrigation via sprinkler system

If you may be like me and have been missed by many of the rain showers & thunderstorms, you may need to irrigate your garden, be it vegetable or ornamental.

Plants signal their need for water – they may become a lighter color and they may droop or wilt. In turfgrass, you will be able to see your footprints after you walk across the lawn and the leaves may droop or lose their shine.

Irrigate early in the day when it is cooler and winds are usually low. This allows plants to use the water before it evaporates and the foliage to dry quicker reducing favorable conditions for disease. For trees and shrubs and vegetable gardens use soaker hoses or micro-irrigation. For lawns use sprinklers that produce large drops of water instead of a fine mist.

Irrigation should be deep, wetting the soil to about 6” and infrequent. With frequent, short watering times the moisture only penetrates the top surface of the soil, encouraging plants to have shallow roots. Deep, infrequent irrigation encourages plants to produce roots that are deeper in the soil.

Use mulch to keep the soil cooler and to preserve moisture in vegetable and ornamental gardens.

If you garden in containers or raised beds, they may need irrigation every day. Make sure to target the base of the plants so water gets to the roots. Newly planted trees and shrubs and those planted within the last three to five years will need particular attention and need to be irrigated every 7-10 days if rainfall is insufficient.

Join the Master Gardener℠ volunteers of Union County on August 6, 2020, at 7 p.m. for the Successful Gardener program. The speaker will be Kathleen Moore, Project Coordinator for the state Extension Master Gardener℠ program of North Carolina. She will discuss and demonstrate how to use the NC State Extension Gardener Plant Toolbox. The Plant Toolbox allows you to select plants that are suitable to the conditions in your garden and characteristics such as color and fragrance that you might desire. This program will be offered online via Zoom. If you would like to receive the link to attend, call Horticulture Extension Agent, Debbie Dillion at 704-283-3729.