What’s really IN fertilizer, anyway?

Professional turf-grass fertilization, like proper mowing and watering, is one of three most beneficial things for lawn health. It prevents and corrects more problems and does more to keep weeds off of a lawn than anything else. The University of Guelph’s turf-grass institute has shown that proper applications of high-grade professional fertilizer at the right time of year can keep weeds down to five to ten per cent of what an untreated lawn would have.

We all know fertilizer is food for grass. But not everyone knows how it works or what the three numbers on bags of fertilizer mean, or what the components of fertilizer do for your grass.

The three numbers on fertilizer labels show the percentage of each of the three most important plant nutrients. Those are nitrogen (N), phosphorus (P) and potassium (K). So a 35-5-10 blend is thirty-five per cent nitrogen, five per cent phosphorus and ten per cent potassium.

Nitrogen improves plant growth. On your lawn, it also promotes a healthy green colour, lush growth of mature blades, and rapid growth of new shoots. Vigorous growth  and thickening are the keystone’s of your lawn’s ability to defend itself from weeds and disease and to recover faster from injury. Nitrogen is the most common element in the air we breathe, but it is in a form most plants can’t easily use. Fertilizer provides a ‘fixed’ form of nitrogen that grass plants absorb quickly.

Phosphorus stimulates the growth of new roots and helps with the strength of roots. Our fertilizer is phosphate-free though, because Southern Ontario’s clay soil has enough phosphorus, and adding unnecessary phosphates is not environmentally friendly.

Potassium strengthens the blades of the grass. It helps the grass resist traffic and disease pressure, and reduces moisture lost from evaporation.

Polyon ultra high slow-release granular fertilizer is included in all of LawnSavers packages and can also be purchased separately, starting as low as $50 + tax for a single application.

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  • Coping with Covid Update: (updated 05/08/20)

    Hi Everyone, 

    I’m happy to share some good news during these crazy times. LawnSavers has resumed servicing lawns in all areas and lawn care services that provide for lawn health are officially on the Provincial list of essential services due to the fact we can provide this service safely and with no personal contact!

    If you haven’t seen us yet, you will see us within the next 7-10 days. We do not expect any delay in our regular timing of applications (except from the wintry weather).  We put together an easy to read lawn care service timeline that you can use to know when to expect us for each scheduled service in your package. 

    I want to reassure you that in every decision we make around COVID-19, our number one priority remains the health and safety of our employees and customers.  Safety and honesty are our two most important core values.  We will continue to follow strict safety guidelines that ensure “zero touch”.  We will not let our guard down on exercising our safety protocols!

    Our office is open but with less staff in order to maintain safety protocols like social distancing.   Please note our phones are experiencing a high volume of calls and we know how much everyone hates being left on hold, so please leave us a message or email us at  and we will get back to you in less than 24 hours.
    Please be patient with us, we will get back to you as fast as possible.
    You can also sign up for services on our website by clicking here.

    Thank you all for your understanding and patience during these challenging times. Our team works hard, so if you are met with our exceptional service from our technicians or office team members- please give them a thumbs up to make them smile or let me know through a quick email to

    We thank you for supporting a family owned local business of 30 years, we genuinely appreciate each and every one of you and promise that we will do our part to ensure our mutual safety and be on your lawn as soon as possible.  

    Thank you in advance,
    Kyle Tobin
    Chief Environmental Officer