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St Augustine Grass Fertilizer

Liquid St. Augustine grass fertilizer for thicker, greener turf. Includes iron to fix the yellowing common in sandy and alkaline southern lawns.

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$2.99 flat shipping · FREE over $15

30-day money-back guarantee 1 million+ growers served Made in the USA

Works for St. Augustine lawns

  • floratam
  • palmetto
  • raleigh
  • seville
  • citrablue
  • bitter blue
  • sapphire
  • st. augustine sod

Results you can see

Feeds foliage for deeper color and a brighter, more lively look.

Feeds foliage for deeper color and a brighter, more lively look.

Encourages fresh leaf and stem growth for a fuller, thriving plant.

Encourages fresh leaf and stem growth for a fuller, thriving plant.

Supports healthy, resilient roots that absorb nutrients more effectively.

Supports healthy, resilient roots that absorb nutrients more effectively.

What's inside your bottle — macronutrients, core minerals, micronutrients, and natural kelp

How to use

  1. Mix

    Shake Well and Add 1 tsp per quart (32 oz) of water.

  2. Feed

    Water your plants as normal. Spring & summer: every 1–2 weeks. Fall & winter: every 4 weeks.

  3. Grow

    Watch how your plants thrive!

Frequently asked questions

When should I feed St. Augustine grass?

Start after the lawn has fully greened up in spring and feed every four to six weeks through summer. Stop about a month before frost — late feeding invites winter damage.

How long will one bottle last?

At 1 tsp per quart, the 8 oz bottle makes about 48 watering cans of feed. For a typical shelf of 10–15 plants fed every 1–2 weeks in season, that's several months of feeding — and the 32 oz bottle four times that.

How do I apply it to a lawn?

A hose-end sprayer set to the labeled rate covers a lawn in one pass; use a watering can for small patches. Apply in the morning or evening and water in lightly.

Why is my St. Augustine yellow with green veins?

Iron chlorosis, common in alkaline or sandy soils and after heavy rain. This formula includes iron and other micronutrients to green it back up without piling on nitrogen.

Is it safe for kids and pets?

Yes once it has been watered in and the grass is dry. It contains nutrients only — no herbicides or pesticides.

Will it burn my lawn?

Not at the labeled rate. Liquid feeding spreads evenly, so you avoid the streaks and burn spots uneven granular spreading can cause. Skip application in extreme heat.

When will I see results?

Most lawns green up within one to two weeks of the first feeding; thickening builds over a few applications.

Let's Start Growing!

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St Augustine Grass Fertilizer $11.99