Planting Timeline
Showing dates for Silver Queen in USDA Zone 7
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Silver Queen · Zones 3–9
Growing Details
Zone-by-Zone Planting Calendar
Complete Growing Guide
Silver Queen demands rich, fertile soil to produce its legendary sweet kernels. Before planting, work 2-3 inches of well-aged compost or rotted manure into your soil, aiming for a pH between 6.0-6.8. This variety is a heavy feeder, so don't skimp on organic matter.
Wait until soil temperature consistently reaches 60°F before direct sowing—typically mid-May in zones 5-6, late April in zones 7-8. Cold soil will cause seeds to rot rather than germinate. Plant seeds 1-2 inches deep and 4-6 inches apart in rows 30 inches wide. For continuous harvests, plant new rows every 14 days through mid-July.
Skip starting Silver Queen indoors. Corn transplants poorly due to their sensitive taproot system, and direct-sown plants always outperform transplants. If your season is short, choose an earlier variety instead.
Fertize with a balanced 10-10-10 fertilizer at planting, then side-dress with nitrogen when plants reach knee-high (about 18 inches). Apply another nitrogen boost when silks appear. Silver Queen's 88-92 day maturity requires consistent nutrition throughout its long season.
Plant in blocks of at least 4 rows rather than single rows to ensure proper wind pollination. Poor pollination results in kernels with gaps—a common disappointment with this variety. Hill soil around stalks when they're 12 inches tall to prevent lodging, as Silver Queen grows 7-8 feet tall.
Maintain consistent soil moisture, providing 1-1.5 inches weekly. Inconsistent watering during ear development causes tough, starchy kernels instead of Silver Queen's signature tenderness. Mulch heavily to retain moisture and suppress weeds, but keep mulch 6 inches from stalks to prevent pest harboring.
Harvesting
Silver Queen is ready when silks turn dark brown and dry, typically 88-92 days from planting. The ears should feel full and firm when you squeeze them gently through the husks. For the definitive test, pull back a small section of husk and pierce a kernel with your fingernail—milky juice indicates perfect ripeness, while clear juice means it needs more time.
Harvest in early morning when sugars are at their peak concentration. Twist ears downward and pull firmly, or use a sharp knife to cut the stalk just below the ear. Silver Queen has a narrow harvest window of 3-5 days per planting before kernels become starchy, so check daily once silks brown. The variety's exceptional sweetness diminishes rapidly after harvest, so plan to use ears within hours of picking for the best flavor experience.
Storage & Preservation
Silver Queen's sugars convert to starch rapidly after harvest, so immediate processing is crucial. Store unhusked ears in the refrigerator for maximum 2-3 days, keeping husks damp to prevent kernel drying.
For freezing, blanch whole ears for 7-9 minutes depending on size, then plunge into ice water. Cut kernels from cobs or freeze whole ears. Silver Queen's creamy texture makes excellent cream-style corn—scrape cobs after cutting to capture the sweet milk.
This variety cans beautifully using a pressure canner, maintaining its tender texture better than most sweet corn varieties. The high sugar content also makes Silver Queen ideal for making corn relish or pickled corn salad that showcases its distinctive flavor.
History & Origin
Silver Queen was developed by Rodney Musser of Pennsylvania's Musser Seed Company in the late 1950s and released commercially in 1960. Musser created this variety by crossing Country Gentleman (a shoepeg corn with exceptional sweetness) with Stowell's Evergreen (known for tender kernels and extended harvest period).
The variety gained rapid popularity throughout the 1960s and 1970s, becoming the gold standard for white sweet corn across America. Its 40+ year reign as the benchmark variety speaks to Musser's breeding genius—he successfully combined the best traits of both parents while eliminating their weaknesses.
Silver Queen represents the pinnacle of traditional sweet corn breeding before the introduction of supersweet and synergistic varieties in the 1980s. Many modern white corn varieties are still judged against Silver Queen's perfect balance of sweetness, corn flavor, and creamy texture, cementing its status as an American garden legend.
Advantages
- +Unmatched flavor combination of sweetness and rich corn taste that modern hybrids often lack
- +Exceptionally tender kernels with creamy texture that literally melts in your mouth
- +Excellent holding quality on the stalk—maintains peak flavor for 3-5 days once ready
- +Superior freezing and canning performance compared to supersweet varieties
- +Strong stalks with good lodging resistance despite 7-8 foot height
- +Reliable germination and consistent performance across different growing conditions
- +Large, well-filled ears typically 8-9 inches long with 14-16 kernel rows
Considerations
- -Long 88-92 day maturity limits growing season in zones 4 and colder
- -Requires rich, heavily amended soil and consistent fertilization to perform well
- -Sugars convert to starch quickly after harvest, demanding immediate processing
- -Susceptible to corn earworm damage in the ear tips without preventive treatment
- -Must be isolated from field corn and popcorn to prevent cross-pollination and tough kernels
Companion Plants
Plant Together
Dill
Attracts beneficial wasps that prey on corn borers and other corn pests
Bush Beans
Fix nitrogen in soil that corn can utilize, part of traditional Three Sisters planting
Winter Squash
Provides ground cover and weed suppression, completes the Three Sisters companion trio
Marigolds
Repel corn earworm, aphids, and other harmful insects with strong scent
Nasturtiums
Trap crop for cucumber beetles and aphids, protect corn from pest damage
Sunflowers
Attract beneficial insects and provide windbreak protection for corn stalks
Lettuce
Benefits from corn's shade during hot weather, efficient use of garden space
Pole Beans
Climb corn stalks for support while fixing nitrogen that benefits corn growth
Keep Apart
Black Walnut Trees
Release juglone toxin that inhibits corn growth and can cause stunting or death
Brassicas
Corn's allelopathic compounds can stunt growth of cabbage, broccoli, and related crops
Tomatoes
Both are heavy nitrogen feeders creating competition, corn attracts tomato fruitworm
Pests & Disease Resistance
Resistance
Good resistance to Stewart's wilt. Moderate resistance to common rust.
Common Pests
Corn earworm, European corn borer, corn rootworm, Japanese beetles
Diseases
Common rust, northern corn leaf blight, Stewart's wilt, smut