Geo Zoysia

Geo Zoysia Maintenance Guide

Geo Zoysia is a cross between a Zoysia japonica and a Zoysia tenuifolia that offers specifiers, landscapers, golf course designers, sportsturf managers and homeowners exceptional performance with low maintenance across a wide spectrum of applications. Geo is a dark-green turfgrass with fine-textured leaf blades that grows in a wide variety of soil and climate conditions. Geo performs well in sandy and clay type soils throughout the southern U.S. and has tough runners, rhizomes, and deep roots that provide excellent sod strength, wearability, and improved drought tolerance. Geo performs well in hot, arid, sandy areas of the southwest U.S., and has proven itself drought tolerant in many challenging applications. Geo has very good shade tolerance and has performed well in field and homeowner sites. Its shade tolerance is better than that of most Zoysias and it performs well into the transition zone. Additionally, Geo is highly tolerant of most herbicides making it easier to control weeds during production and for the end user.Production and Quality Control

Genetic purity and preservation of the Geo Zoysia variety is of primary importance. Only licensed turfgrass producers are authorized to grow Geo for sale. All licensed Geo production is monitored through ongoing quality control and quality assurance programs. Additionally, producers can choose to certify their Geo through local state crop certification agencies that provide rigid standards and regulations for production, harvesting, and handling, that when adhered to, ensure a genetically pure, high quality, “certified” product.

Installation and Establishment

Installation and the care taken during the initial days that follow are the most critical factors in determining the long-term quality and performance of Geo Zoysia. Harvesting and transplantation are extremely stressful to any turfgrass and precautionary measures should be taken to help reduce further cultural and environmental stresses. Geo is a tough, hardy turfgrass that once established, produces a beautiful lifetime lawn, landscape, sportsturf or golf course.Proper care, including pre-installation soil preparation and limiting time on the pallet to less than 24 hours, yields positive results. Improper care, however, can cause death of the turfgrass or damage that results in lengthy recovery and additional expense. See our Turfgrass Installation page for more information on proper installation of turfgrass.

Irrigating Newly Installed Geo: Proper watering upon installtion is essential to successful establishment

Prior to installation, ensure irrigation systems are working properly and covering all areas to be planted

Water thoroughly upon installation ensuring that both the Geo is wet and the soil is moist to a depth of 3”, which is approximately 1” of water per day

In hot weather, water within a few hours of installation to mitigate severe damage or loss due to heat / dehydration stress

Shaded areas and heavy soils require less water than full-sun areas and sandy soils

When proper rooting is evident, alter irrigation program accordingly

Mowing: New installations are often uneven and care should be taken not to scalp high spots:

Mow within 10 days of installation and bag clippings for the first few mowings

After the first few mowings see post establishment instructions for proper mowing practices.

Fertility: Use a transplant-friendly regimen that will help reduce shock and minimize disease

Use a starter fertilizer that is low in nitrogen and higher in phosphorous and potassium

For best results always perform a soil test and fertilize accordingly

Post Establishment

Herbicides: Proper mowing, irrigation and fertilization of Geo will reduce weed problems. If a weed problem persists:

For any herbicide application, always read and follow label directions carefully

Improper use of herbicides can severely damage or kill Geo

Make routine observations of the landscape being aware of seasonal weeds

Identify the type of weed causing the problem before using any chemical controls

Geo is tolerant of most commonly used herbicides

Consult with local experts for herbicide recommendations if you are unsure of label instructions

Fungicides: Geo has shown resistance to most fungal problems and controls should be used only as needed:

For any fungicide application, always read and follow label directions carefully

Early identification and treatment of disease stress minimizes inputs and injury

Make routine observations of the landscape being aware of unusual symptoms

Consider a broad-spectrum fungicide application if predictable seasonal problems are noted

Ask your Geo grower to apply fungicide 1-2 weeks prior to harvest during times of high, disease-inducing stress

Consult with local experts for fungicide recommendations if you are unsure of label instructions

Irrigation: Established Geo exhibits drought tolerance due to improved plant genetics and growth characteristics:

Watering requirements are greatly dependent on soil type, season, geography and other factors

Ensure irrigation systems are working properly and covering all areas covered by Geo

Make routine observations of the landscape and learn the signs (i.e., wilting) that indicate when irrigation is required

Shaded areas and heavy soils require less water than full-sun areas and sandy soils

Encourage deep root growth by watering until the soil is moist to a depth of 3”, shallow watering encourages shallow roots

Infrequent deep watering maximizes drought resistance and tolerance

Visit our Watering Tips for more information on proper irrigation

Fertility: Proper fertility practices will encourage healthy, disease and insect free Geo:

Perform soil tests to understand your soil type(s) and condition and best determine your specific fertility needs

Generally, Geo requires 3 fertilizer applications/year: spring, summer and fall

Make routine observations and fertilize according to what the landscape indicates

Understand what and how much fertilizer you are applying

Avoid disease and insect inducing growth flushes by reducing Nitrogen rates

Improve color and limit growth surges by utilizing iron sources such as Milorganite

A total of 3 LB of Nitrogen per 1,000 sqft should be adequate for most applications

Apply balanced fertilizers with lower rates of Nitrogen in the summer and fall

Keep Your Geo Zoysia Looking Spectatular Year-round

Geo Zoysia is one of the most beautiful turf varieties in the southern United States.  But there are some differences maintenance – wise from the wide bladed zoysia’s like EMPIRE Turf.

It starts with proper installation and then relies on following the best maintenance practices for the grass.  Turfgrass developer John Chapman, owner of Craft Turf Farms in Foley, Alabama, outlines the proper steps for maintaining a beautuful lawn.

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