Download Free Vegetable Growing Guide PDF

Growing Treated Silver Queen Corn in the Vegetable Garden

Direct sow Silver Queen after the last frost date when soil temperatures have reached at least 60 F — corn germinates poorly in cold soil, so patience here pays off. Sow seeds 1 to 2 inches deep, 3 to 4 inches apart, in rows spaced 30 to 36 inches apart, then thin plants to 10 to 12 inches once they are 4 to 6 inches tall. Most importantly, plant corn in a square block of at least 4 short rows rather than a single long row — corn is wind-pollinated, and block planting is essential for good kernel set and fully filled ears.

Corn is a heavy feeder and benefits from nitrogen-rich soil amended with compost or well-rotted manure before planting. Side-dress plants with a nitrogen fertilizer when they reach 12 inches tall and again at tasseling. Water consistently, especially during tasseling and ear fill — uneven moisture at these stages leads to poor kernel development. Avoid cultivating deeply near the base of stalks, as corn roots are shallow and easily damaged; mulch is a far better tool for weed control. For companion planting, corn pairs beautifully with pole beans and squash in the classic Three Sisters tradition — beans fix nitrogen and climb the stalks, while squash shades the soil to retain moisture and suppress weeds.

Harvesting Treated Silver Queen Corn

Silver Queen is ready to harvest roughly 20 to 23 days after silks first appear. Watch for silks that have turned dry and dark brown, husks that remain tight and green, and ears that feel full and firm along their length. To confirm ripeness, peel back a small section of husk and pierce a kernel with your thumbnail — a milky white liquid means the ear is at peak sweetness. Clear liquid means it needs more time; a thick, doughy consistency means the window has passed. As a sugary (su) variety, Silver Queen's sugars begin converting to starch quickly after harvest, so the goal is to pick, cook, and eat on the same day whenever possible. If you must store ears, refrigerate them in their husks and use them within 3 to 5 days. Silver Queen also freezes very well — parboil briefly, cool in an ice bath, cut kernels from the cob, and pack into freezer bags to enjoy through the winter.

About Treated Silver Queen Corn Garden Seeds

Silver Queen was developed by Rogers Brothers Seed Company and introduced around 1955. It rose quickly to become the dominant white sweet corn on the American market, requested by name at farm stands from New Jersey to Florida and eventually coast to coast. For decades, it was simply the standard — if you wanted quality white sweet corn, Silver Queen was what you planted.

As a sugary (su) hybrid, Silver Queen belongs to the original class of sweet corn genetics — the same foundational type that defined American summer eating for generations. Newer sugar-enhanced (se) and supersweet (sh2) varieties have since surpassed it in outright sweetness and post-harvest shelf life, leading many commercial growers to move on. But for home gardeners, the trade-off is worth examining: what Silver Queen may give up in extended sweetness, it more than makes up for in creamy texture, complex corn flavor, and that unmistakable old-fashioned character that many feel the newer types do not replicate.

Silver Queen's parentage traces in part to Luther Hill sweet corn, an open-pollinated variety developed around 1902 by Luther Hill, a horticulturist at Rutgers University in New Jersey. That New Jersey heritage runs deep — Silver Queen dominated the fresh sweet corn market along the Mid-Atlantic coast for much of the mid-20th century and remains one of the most recognized corn names in American gardening.

Stories/Tips From Our Gardeners

Silver Queen is a (su) variety, which means it should be isolated from (sh2) supersweet types if you are growing both. Cross-pollination from nearby (sh2) corn can compromise Silver Queen's kernel quality and flavor. If a 400-foot separation is not practical, stagger your planting dates by at least 2 weeks so the two varieties do not shed pollen at the same time.

- Jerry Sawyer, True Leaf Market Writer

Other Resources

• Jay Wagner - 2022 Scholarship Winner - The Diversity Of Corn

Treated Silver Queen Corn Seeds Per Package:

• 0.5 oz Packet - Approximately 56 Seeds
• 4 oz - Bulk - Approximately 460 Seeds
• 1 lb - Bulk - Approximately 1,840 Seeds
• 5 lb - Wholesale - Approximately 9,200 Seeds
• 25 lb - Wholesale - Approximately 46,000 Seeds

Treated Silver Queen Hybrid Sweet Corn seeds are available for Fast Free Shipping on qualifying orders.