Early Sunglow

Corn

70d to harvest

Sun-warmed and irresistibly sweet, Early Sunglow brings a bright, golden harvest with kernels that burst tenderly and melt into a silky bite. The ears form with a classic, well-filled silhouette and a smooth, juicy texture that stays crisp in the garden’s first golden weeks. Grow it for fresh-picked enjoyment and for vibrant, sunshine-bright corn-on-the-cob moments, plus richly colored results in creamy sauces and quick pickling-style preserves.

Crop Dates

Growing note: In frost-free Zone 10a, grow this cool-season crop during the cooler dry season (October–February).

Milestone	Date
Start Indoors	—
Climate	Frost-Free Climate
Transplant / Sow Outdoors	Oct 1st
Harvest Begins	Dec 10th
Harvest Ends	Feb 28th

Crop Details

Trait	Value
Days to Maturity	70
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	60
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	Not Required

Frequently Asked Questions

What pest or disease commonly affects Zea mays (sweet corn) and how can I prevent it?

Sweet corn commonly suffers from corn earworm and fall armyworm, which bore into developing ears and damage kernels. Scout plants 2–3 times weekly from tassel to early ear fill; use pheromone traps for monitoring and apply an appropriate Bt corn earworm product when larvae are small, following the label. Prevent fungal issues like gray leaf spot by spacing plants for airflow and watering at the base so leaves stay dry during the day.

How often should I water sweet corn during the main growing phase?

During the rapid growth phase (from tasseling through early ear development), keep soil evenly moist, targeting about 1 to 1.5 inches of water per week total (more in hot weather). Water deeply so moisture reaches the root zone rather than frequent light sprinkling, and avoid letting the soil dry out between waterings because stress can shorten ear length and reduce kernel fill. A simple check: the top few inches should feel moist, not dry, before watering again.

How do I tell when sweet corn is ready to harvest (Zea mays var. saccharata)?

Harvest when the silks have browned and pull away easily, and the kernels are filled to the tip of the ear. Do the “milk” test: press a kernel—if a milky fluid squirts out, it’s ready; if it’s watery or no liquid forms, wait a bit. For best sweetness, pick in the morning and harvest soon after kernels reach the milk stage; once over-mature, sugar converts to starch quickly in sweet corn.