Certifications and Best Practices for Landscapers

Written by on July 27, 2017

The Components of a Professional Landscaping Service – Attributes of a Qualified Landscape Maintenance Service

Develops a clear scope of work

It takes a high level of skill and experience to develop a professional scope of work. For landscape maintenance – location, plant types, trees, irrigation, environmental factors and traffic are considerations when developing a scope. It’s a valuable road-map that should stand on its own. A prospective client is able to compare – apples to apples – between multiple bidders. And, when the landscaper is hired the client knows what to expect.

Is Licensed

C27 License

A valid contractor’s license is required for installing gardens, irrigation systems or hardscape – if the value is $500 or more.
Other licensing includes Liability insurance, Workers’ Compensation, pesticide applicator’s license and business licensing are all required for our commercial work.

Landscape Industry Certified

The landscape industry’s certification program is the best measure of skills, knowledge and experience from a theoretical and practical perspective. Our managers have a range of different certifications that demonstrate their competency in horticultural practices, maintenance and irrigation. The logo “Landscape Industry Certified” is a powerful distinction. It means that employees have taken their experience and skills to the next level of professionalism. And, like any profession, there is an ongoing re-certification process.

Horticultural knowledge

Understanding how environmental conditions, light, soil and water impact the health of an infinite number of plants can be complex. It requires training and experience. One example: a stressed plant that looks like it’s not getting water may have an issue that is completely unrelated.

Commitment to In-house Training and Green Industry Involvement

Gardeners’ Guild, as do other professional landscape companies, offers in-house training. Our subjects include horticulture topics, irrigation and state of the art products, IPM (Integrated Pest Management*) as well as different aspects of communications and leadership.

Over the years Gardeners’ Guild has been involved in the green industry helping to shape its testing programs, curriculum. We have also been active in municipal water districts and IPM program.

The drought reshaped our thinking about water. New regulations and an ever increasing array of irrigation products require our landscapers to be water experts.

Irrigation professionals should know how to design, install, use, test and repair a system. He or she must also be continuously updated in the various products in order to recommend the most appropriate one. New technology also requires client education. Gardeners’ Guild has a commitment to regular training on the latest products and trends so we can be an important resource for clients. We also keep up to date on rebates in order to assist on how to leverage them.

Gardeners’ Guild Promotes these Important Certifications:

CLIA (Certified Landscape Irrigation Auditor) professional
A CLIA is authorized to conduct a water audit on a property. They supervise the collection of site data. Based on their findings they can recommend an irrigation schedule for effective water management.

QWEL (Qualified Water Efficient Landscaper)
Gardeners’ Guild managers are QWEL certified. QWEL is recognized by EPA’s Water Sense and gives our managers specialized expertise in water management, efficient irrigation, system design and audit.

CLT – Irrigation
Landscape Industry Certified Irrigation Technicians are qualified to install, maintain and repair irrigation systems.


Experienced Practitioner of Integrated Pest Management (IPM)
Using the least toxic practices is the increasingly preferred method of dealing with weeds and other pests in the landscape. Gardeners’ Guild has incorporated these practices since the 1980s. We also have a licensed and certified full service IPM division. Keeping up to date on local ordinances and trends is critical and we are involved through organizations such as SF Department of the Environment, IPM Technical Advisory Committee, PAPA (Pesticide Applicators Professional Association) and San Francisco IPM Task Force . Sometimes a pesticide application is necessary, a pesticide applicator’s license is required.

Ecological Practices
These go hand in hand with the above. As the San Francisco bay area’s awareness of climate changes proliferates, the demand for landscape contractors using ecologically friendly practices has grown. Gardeners’ Guild has been a pioneer in developing its own green landscape management program called LivingSolutions. A new (or really old) way of thinking – healthy soil makes healthy plants. It requires continuous training, but the results are worth it.

Recommendation for Members interested in Landscaping Industry

Certified Landscape Irrigation Auditor
Certified Irrigation Technician
Certified Golf Irrigation Auditor
Certified Irrigation Contractor
Certified Irrigation Designer – Landscape
Certified Landscape Water Manager
Read More

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