How to Grow Maize Sweet Silver
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Maize Sweet Silver
Zea mays subsp. saccharata
vegetableSweet Silver is a bicolor sweet corn variety that produces ears with white and yellow kernels, offering excellent sweetness and tender texture. This mid-season hybrid matures in 70-80 days and is prized for fresh eating and freezing. The stalks typically reach 6-7 feet tall with good disease resistance.
When should you plant Maize Sweet Silver in your zone?
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Example Maize Sweet Silver timeline · Pittsburgh, PA (Zone 6b)
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Plant Maize Sweet Silver
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Maize Sweet Silver
Around Jun 26≈ 70 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Maize Sweet Silver dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-9; best in zones 4-8 for optimal sugar content and flavor
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Germination & Emergence
7-10 daysSeeds sprout and first leaves emerge above soil. Plants are vulnerable and pale green.
Keep soil consistently moist but not waterlogged. Protect from birds and heavy rain. Maintain soil temperature above 60°F for germination.
Vegetative Growth
3-4 weeksPlant develops 4-8 leaves, grows rapidly, and establishes root system. Stems thicken and height increases noticeably.
Apply light fertilizer when plants reach 6 inches tall. Begin thinning to proper spacing. Monitor for early pest damage. Provide support if wind is heavy.
Tassel & Silk Emergence
2-3 weeksMale tassel forms at top of plant; female silks emerge from developing ears. Plant reaches full height of 6-7 feet.
Maintain consistent, abundant moisture during this critical stage. Apply side-dress fertilizer (especially nitrogen) to support ear development. Ensure pollination occurs with minimal disruption.
Pollination & Ear Fill
2-3 weeksPollen falls from tassel onto silks; kernels swell and fill with milk as ear develops. Silks begin to brown.
DO NOT interrupt pollen dispersal with excessive watering or work in the field. Continue deep watering 1-2 times weekly. Avoid high-nitrogen fertilizer which delays maturity.
Harvest Maturity
Ready for harvest window of 3-5 days at peak qualityKernels reach full size and milky stage; silks fully brown and dry. Husks feel full and tight at base of ear.
Check ears daily once silks turn brown. Harvest at peak sweetness (milky stage) for best flavor. Immediate consumption or preservation maximizes sugar content.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Bacillus thuringiensis (Bt) spray at tassel stage; remove and destroy infested plant parts; crop rotation
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Apply mineral oil or Bt to silk entrance 3-5 days after silking; remove husks to inspect; hand-pick larvae
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Spray with insecticidal soap or neem oil; encourage beneficial insects; strong water spray to dislodge
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Increase humidity; spray with miticide if severe; remove heavily infested leaves
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Create paper collars around seedling bases; remove debris; apply diatomaceous earth at soil line
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Remove and destroy galls before they rupture; ensure good air circulation; avoid over-fertilizing with nitrogen
Uses
Fresh eating and cooking
CulinarySweet Silver corn is ideal for boiling, grilling, roasting, or eating raw. The bicolor kernels have excellent sweetness (higher sugar content than field corn) and tender texture when harvested at peak maturity. [source]
Freezing and preservation
CulinaryThe hybrid vigor and consistent kernel quality make Sweet Silver excellent for blanching and freezing for winter use. Retains flavor and texture well in frozen storage for several months. [source]
Corn husks and cobs
HouseholdDried corn husks can be used for crafts (tamale wrappers, decorations) and corn cobs have various household uses including mulch and animal bedding. [source]
Wildlife habitat and feed
WildlifeCorn plants provide shelter and food for birds and beneficial insects. Mature ears and fallen grain support pollinators and birds during late season. [source]
Corn silk herbal use
MedicinalCorn silk (the stringy threads from ears) has been used traditionally in herbal medicine for urinary health and anti-inflammatory purposes. Dried corn silk can be brewed as tea. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest when silks have turned brown/black and kernels release a milky liquid when punctured (typically 20 days after silking). Ears should feel full and plump. Twist ear downward at a 45-degree angle while holding stalk steady. Refrigerate immediately; sugar converts to starch quickly after picking, so use within 24 hours for maximum sweetness. For succession crops, plant every 2 weeks for continuous harvest.
Fun Facts
- 🌱 Sweet corn contains about 6% sugar at harvest, compared to field corn's 1-2% sugar, making the difference in taste dramatic—the enzymes that convert sugar to starch work rapidly after picking, which is why fresh corn tastes so much better than stored corn.
- 🌱 The bicolor pattern in Sweet Silver corn is controlled by a single gene; the white kernels contain the 'yellow' pigment inhibitor gene, creating the striking two-tone appearance.
- 🌱 Corn is actually a grass and produces both male flowers (tassel at top) and female flowers (silk and ear), making it monoecious—capable of self-pollination but benefiting from cross-pollination for better kernel fill.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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