Sunday Lawn & Garden Care

Super S Liquid Fertilizer

$30

42 fl. oz. pouch + hose-end sprayer. Covers up to 3,000 sq. ft.

Sunday Super S liquid sulfur fertilizer for lawn pouch with hose-end sprayer on green grassSuper S Liquid Fertilizer Hosedata sheetdata sheet

Premium liquid lawn fertilizer — sulfur

Address high pH and sulfur deficiencies in your soil while improving resilience and nutrient uptake for your lawn.

$30

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Sunday Super S liquid sulfur fertilizer for lawn pouch with hose-end sprayer on green grassSuper S Liquid Fertilizer Hosedata sheetdata sheet

Your lawn's pH problem, handled

Super S Liquid Fertilizer is a 15-0-4 liquid sulfur lawn fertilizer that helps with high pH and sulfur deficiency. Iron deepens your green, sugar beet extract handles stress recovery. Works on all grass types, hooks to your hose. Try a Sunday Soil Test Kit or a Custom Lawn Plan.

What makes Super S Liquid Fertilizer different
  • 15-0-4 NPK with sulfur and iron in one step
  • For use in high pH soil to improve nutrient uptake
  • Iron delivers deep, rich green color fast
  • Hose-on application, done in 10 to 15 minutes
  • Works on all lawn and grass types
  • Made without pesticides
Ingredients

Sulfur (2%): Helps shift high soil pH so your lawn can easily absorb nutrients.

Iron: Delivers deep green color without excess growth, so your lawn looks thick and rich even during hot stretches.

Sugar beet extract: Helps grass manage heat stress and hold onto moisture. A Sunday original you won't find in basic sulfur products.

How to use

Apply early morning or evening when your lawn is hydrated. Avoid drought-stressed or heat-damaged lawns.

  1. Connect the sprayer to your garden hose and attach the fertilizer pouch.
  2. Turn on the water and walk your lawn at a steady pace, applying evenly.
  3. Keep going until the pouch is empty, about 10 to 15 minutes. One pouch covers up to 3,000 sq ft.
  4. Once dry, your lawn is ready to walk on again.
  5. Reapply every 4 to 6 weeks from spring through fall. Keep the sprayer for future applications.

What does sulfur do for my lawn?

Super S Liquid Fertilizer uses 2% sulfur to help shift high soil pH so your lawn absorbs nutrients more effectively.

When pH rises above 7.5, grass nutrients become less available, even when they’re present. Super S helps with that.

How do I know if my lawn needs sulfur?

Super S is designed for lawns with high pH or low sulfur. Signs include yellowing new growth and poor response to regular fertilizer.

A soil test confirms it. If your pH is above 7.0, sulfur helps shift it towards the ideal 6.0 to 7.0 range.

Can I apply Super S to a newly seeded lawn?

Super S Liquid Fertilizer works best on established lawns. Wait until new grass has been mowed at least twice before applying.

This gives young roots time to develop before adding more nutrients.

What happens if it rains after I apply Super S?

Super S absorbs into soil quickly once applied. Light rain after drying is fine and can help move nutrients to the roots.

If heavy rain is expected within a few hours, wait for a drier window.

Is liquid sulfur fertilizer better than granular?

There are pros and cons to both application methods. Super S Liquid Fertilizer delivers sulfur, iron, and sugar beet extract in a fast-absorbing liquid that spreads evenly without a broadcast spreader. You may need to reapply sooner, since it’s absorbed faster.

Granular sulfur can take longer to break down and start working, so results take longer, but you may have more time before you need to reapply.

How is Super S different from other Sunday fertilizers?

Super S is targeted to help with high pH soils and sulfur deficiencies with 2% sulfur, iron for greening, and sugar beet extract for stress recovery.

Other Sunday Fertilizers are for general feeding. Choose Super S when soil tests show high pH or low sulfur.

When is it safe for people and pets to go on my lawn after applying?

Our ingredients break down quickly and don’t persist in the environment. After our products dry, you can get back to using your lawn!

Sunday liquid lawn fertilizer pouches side by side on a lawn

Customer reviews

4.3

starstarstarstarstar

Based on 18 reviews

Reviews with media

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18 reviews

  • Michael

    Verified Buyer

    LocationTucson Az

    starstarstarstarstar

    Need more fertilizer in the

    Need more fertilizer in the lawn package plan

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  • Travis

    Verified Buyer

    LocationMid Michigan

    starstarstarstarstar

    Michigan Lawn

    Seemed to help thicken some areas of my yard that needed a boost before the fall feed. It wasn't a miracle product but did a decent enough job.

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  • David

    Verified Buyer

    LocationBoston, MA

    starstarstarstarstar

    Good, easy to use.

    Good. Easy to use. made my lawn happy. we hit a really hot patch of the summer so might not have popped as much as desired but think more due to the weather.

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  • Kevin

    Verified Buyer

    LocationAshburn, VA

    starstarstarstarstar

    Good stuff!

    Brightened up grass and promoted growth during very hot months. Good stuff!

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  • Christina

    Verified Buyer

    LocationMonroe, Wa. 98272

    starstarstarstarstar

    Very pleased

    Was happy with the ease of use and how to use of this. No special tools required and a nice turn around from brown to green. Will buy again.

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  • Angela

    Verified Buyer

    LocationUtah

    starstarstarstarstar

    Works great

    We have had a hard time keeping grass in our backyard without resorting to chemical fertilizers, which we don't want to use. Every summer the grass turns brown and the weeds take over and we lose more grass. This year I reseeded a small patch of our lawn with a mix of grass and clover and used Sunday organic fertilizer on it. Now we have a small patch of lush, green grass/clover and hope for the future of our lawn.

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  • Peter

    Verified Buyer

    starstarstarstarstar

    Seemed to get good growth

    Seemed to get good growth but with all the rain we had this summer it is tough to tell. Will use again so I can compare the results

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  • Joseph

    Verified Buyer

    LocationEast Meadow NY

    starstarstarstarstar

    Great

    This product was great it really made a difference in my lawn

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  • Marc

    Verified Buyer

    LocationAlbany, New York

    starstarstarstarstar

    Good and easy to use

    Simple to use and helped my lawn.

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  • Marcy

    Verified Buyer

    LocationDesert Aire, Wa.

    starstarstarstarstar

    Amazing!

    The fertilizer really pulled my glass out of a funk! I really like how easy it is to apply and how safe it is for the environment!

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$30