Blue Hopi

Corn

85d to harvest

Sink your teeth into Blue Hopi’s richly nutty, floury kernels—an alluring blend of cool blue tones and warm, earthy sweetness that feels velvety in the bowl. At maturity, the cobs develop a dense, medium-to-large ear with a satisfying, tender bite that grinds beautifully into fine flour for everyday baking and thickening. Grow this heritage flour corn for a striking harvest and a distinctive, storied flavor that turns simple meals into something memorable.

Crop Dates

Growing note: In frost-free Zone 12b, 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 25th
Harvest Ends	Feb 28th

Crop Details

Trait	Value
Days to Maturity	85
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

Why are my Blue Hopi plants getting powdery white patches on the leaves, and what should I do?

Powdery mildew is common on squashes like Blue Hopi, showing up as a white, floury film on older leaves in warm, humid stretches. Remove the worst affected leaves early, improve airflow (thin crowded foliage and keep leaves off the soil), and spray a labeled sulfur-based fungicide or potassium bicarbonate as soon as spots appear, repeating per label intervals. Avoid overhead watering so the canopy dries quickly between morning and midday.

How often should I water Blue Hopi during the main growing phase (once it’s established)?

During flowering and fruit set, keep the soil evenly moist but not waterlogged—about 1 inch (2.5 cm) per week total, adjusted for heat and rainfall. Water deeply 1–2 times per week rather than daily, aiming water at the soil under the canopy; the top 1 inch should dry slightly between waterings. If leaves wilt at midday but perk up by evening, increase watering frequency slightly without soaking the roots.

How can I tell when Blue Hopi is ready to harvest?

Harvest when the pods develop into mature, hard, “dry” blue kernels inside the husk—around 85 days from sowing—when the plant’s foliage starts to yellow and dry. The easiest check is the seed: kernels should be firm and fully colored (not soft or dentable with a fingernail). Leave pods on the plant a bit longer if needed for the kernels to harden, then cure by drying in a warm, airy spot before storing.