Sweet Corn Fertilizer for Strong Stalks & Ears

When your sweet corn may benefit from feeding

During the active growing season, when new leaves, stems and fruit are forming
When plants have been growing in the same bed or container for several seasons
After heavy rain or frequent irrigation, which can carry nutrients below the root zone
For plants in containers, raised beds or sandy soils that hold few nutrients
From transplanting through harvest, as plants put on growth quickly

Plant appearance can also be affected by light, watering, roots, temperature, and other growing conditions, so feeding is one part of overall plant care.

Results you can see

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

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

Supports healthy, resilient roots that absorb nutrients more effectively.

Works for sweet corn varieties

Silver Queen
Peaches and Cream
Honey Select
Ambrosia
Bodacious
Incredible
Golden Bantam
Sugar Buns
Sweet Corn

Label facts

NPK 8-1-2 with 1.5% calcium and 0.75% magnesium, plus iron, manganese, zinc, boron and copper.

Derived from kelp (ascophyllum nodosum), potassium nitrate, potassium phosphate, calcium nitrate, magnesium nitrate, boric acid, copper sulfate, ferric sulfate, manganese sulfate, zinc sulfate, urea.

One 8 oz bottle makes 16 gallons of feed at 1 Tbs per gallon — the 32 oz makes 64.

Store cool and dark. Guaranteed 12 months from purchase; keeps up to 2 years.

How to care for sweet corn

Light

Sweet corn needs full sun, eight hours or more. Plant it on the north side of the garden so the tall stalks do not shade shorter vegetables.

Water

About one inch of water a week, and more once tassels and silks appear. Dry soil during pollination gives ears with scattered, missing kernels.

Soil

Rich, well drained soil with compost worked in, at pH 6.0 to 6.8. Plant in blocks of at least four short rows so wind can pollinate every ear.

Feeding

Feed Sweet Corn Fertilizer at planting, again when the stalks reach knee high, and once more as the tassels appear. Those three timings cover the heaviest demand.

Temperature

Sow once the soil reaches 60F and frost has passed. Corn grows fastest in 75 to 85F weather, and seed rots in cold, wet spring ground.

Harvest

Pick about three weeks after the silks appear, when they are brown and dry and a punctured kernel runs milky. Sweetness fades fast, so eat or chill it quickly.

Frequently asked questions

How often should I feed sweet corn?

Three well-timed feedings carry a crop to harvest: at planting, when your plants are knee-high, and again when tassels show. Sweet corn draws nitrogen hard in the weeks before tasseling, as it builds the stalk and leaves that will fill the ears, so the knee-high feeding is the one not to miss. Sweet Corn Fertilizer is a liquid, so each of those feedings reaches the roots as soon as you water it in, when your sweet corn can put it to use.

How often should I feed sweet corns?

Sweet Corn Fertilizer is built for consistent feeding through a fast, hungry season. Feed every 1–2 weeks in spring and summer while the corn is actively growing, from emergence through tasseling and ear fill. Mix it into your regular watering at the recommended dilution so feeding fits the watering the block already gets. Silver Queen, Peaches and Cream, Honey Select and other varieties follow the same schedule.

Why is my sweet corn not sweet?

Harvest timing, mostly. Sweet corn is at its sweetest for a short window: pick when the silks have turned brown and a pierced kernel squirts milky juice, and eat or chill it soon after, since sugars start converting to starch once the ear is picked. Growing conditions matter too. Steady water and steady nutrition through ear fill keep kernels plump and sugary, and Sweet Corn Fertilizer supplies that nutrition in a form the roots take up quickly as the ears fill.

Is it safe to use on food crops?

Yes. Sweet Corn Fertilizer is formulated for a food crop, so that is exactly what it’s for. It supplies the same mineral nutrients corn draws from the soil, taken up through the roots and used to build stalks, leaves and ears. Water it into the soil at the recommended dilution, and rinse your harvest as you normally would before cooking, the same as with any produce from the garden.

Will this burn my plants?

Sweet Corn Fertilizer is a dilute liquid feed, and dilution is what matters here. Fertilizer burn happens when concentrated salts sit against the roots: too much product in too little water, or granules piled against the stalks. Mixed at the recommended dilution and applied on the regular schedule, the nutrients arrive in solution across the root zone at a strength the roots take up as they water. If you ever mix too strong, flush the row with plain water.

When will I see results?

Corn responds quickly in warm weather. Greener leaves and stronger new growth usually show within two to four weeks of consistent feeding, since the nitrogen in Sweet Corn Fertilizer is in solution and reaches the roots as soon as you water it in. The payoff at harvest builds through the season: well-fed plants carry more leaf area into tasseling, and the ears that fill afterward tend to be fuller when nutrition and water stay steady.

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