Iron Boost Liquid Fertilizer (2-pack)

$54 $60

(2) 42.3 fl. oz. pouches & hose end sprayer

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Sunday Iron Boost liquid iron fertilizer for lawn with hose end sprayer and two pouches for deep greening

Premium liquid lawn fertilizer — iron

Supercharged iron citrate and high nitrogen blend for the deepest lawn greening and growth.

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Your lawn's new favorite color

Iron Boost is a 20-0-1 liquid iron fertilizer for lawn powered by chelated iron citrate for fast foliar absorption. It greens up your grass without pushing excessive growth. Potassium and seaweed extract handle the stress so every blade stays strong. Works on all grass types, and the included sprayer means you just connect and go. Pair it with a Custom Lawn Plan for the full picture.

What makes Iron Boost Liquid Fertilizer (2-pack) different

Greens and feeds in one step with a 20-0-1 formula
Iron absorbs fast for quicker, deeper greening
Hose-end sprayer included, no extra gear
Works on every lawn and grass type
Potassium and seaweed extract for resilience
No pesticides, just nutrients your lawn needs

Ingredients

Nitrogen: Feeds healthy grass growth so your lawn fills in thick and stays green.

Iron citrate: A chelated form of iron that absorbs quickly for rapid deep greening, the kind of green your neighbors will notice.

Potassium and seaweed extract: Helps your lawn handle heat, drought, and everyday stress so it stays strong between applications.

How to use

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

Connect the universal sprayer to your hose and the fertilizer pouch. The sprayer is designed for the right mix of water and fertilizer.
Spray evenly across your lawn until the pouch is empty. This should take about 10 to 15 minutes.
Once the fertilizer dries, you're good to get back on your grass.
Reapply every 4 to 6 weeks from spring through fall.
Keep the sprayer for future applications.

FAQ

How long does it take to see results from Iron Boost?

Iron Boost Liquid Fertilizer uses chelated iron citrate that absorbs through leaf tissue for rapid deep greening. You should notice a darker, richer green within days of application.

Wait 4 to 6 weeks between applications for continued results through the growing season.

When is the best time to apply Iron Boost?

Iron Boost Liquid Fertilizer works best when applied early morning or evening on a well-hydrated lawn. Avoid applying during drought conditions or heat stress.

Apply from spring through fall when your grass is actively growing. Reapply every 4 to 6 weeks for consistent deep greening.

Can I use Iron Boost with other Sunday fertilizers?

Iron Boost Liquid Fertilizer pairs well with Sunday Lawn Plans and other fertilizers. For liquid fertilizer, apply Iron Boost first, then wait 7 to 10 days before applying the next liquid product.

For granular fertilizer, apply Iron Boost first and wait 4 to 6 weeks before applying granular.

Is Iron Boost a fertilizer or just an iron treatment?

Iron Boost Liquid Fertilizer is a full 20-0-1 NPK fertilizer, not just an iron treatment. The nitrogen feeds grass growth while chelated iron citrate delivers rapid deep greening.

Potassium and seaweed extract round out the formula with stress resilience for your lawn.

Does Iron Boost work on all grass types?

Iron Boost Liquid Fertilizer is formulated for any lawn and grass type, including warm season and cool season varieties. The chelated iron citrate and 20-0-1 NPK formula supports greening and growth across all turf.

One pouch covers up to 5,000 sq ft with the included hose-end sprayer.

Can it rain after I apply Iron Boost?

Iron Boost Liquid Fertilizer should be allowed to dry on your lawn before rain or watering. Once the product dries on the grass blades, rain will not affect its performance.

Check the forecast and apply when you have a few dry hours ahead. Application takes about 10 to 15 minutes per pouch.

Documents

Iron Boost Label

Iron Boost Safety Data Sheet

Sunday liquid lawn fertilizer pouches side by side on a lawn