Oscar Blanco

Family: Amaranthaceae Grain

A fragrant, nutty-sweet grain with a softly toasted aroma—Oscar Blanco amaranth forms abundant, creamy-white seed heads that feel almost luminous against the foliage.

The seeds are fine and tender, offering a delicate crunch and a clean, earthy finish that shines in warm grain bowls, hearty porridges, and spoonable sauces. Grow it for an heirloom harvest that matures in about 90 days, rewarding cool-season gardeners with striking color and dependable yield.

Light: Full SunMaturity: 90 DaysHabit: Upright

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 25th
Harvest Begins	Jul 24th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	90
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Oscar Blanco’s fine, tender seed gives you that airy, cereal-like creaminess without turning gummy, plus a softly toasted nuttiness that smells like warm grain right out of the pot. It’s the kind of amaranth that holds its own in creamy bowls and still gives a clean crunch when you toast or sprinkle it at the end.

Best Uses

warm grain bowls where it stays pleasantly granular
creamy porridges (stovetop until spoon-coating)
thick, spoonable sauces or pilafs that need gentle nuttiness
lightly toasted seed toppings for salads and roasted veg

Flavor Profile

nutty-sweet flavor soft, toasted aroma tender seeds with a delicate crunch clean earthy finish

Kitchen Pairings

brown butter honey lemon goat cheese mushrooms chicken or roasted duck

Frequently Asked Questions

What pest or disease most commonly affects Amaranthus hybridus (Oscar Blanco), and what should I do?

In home gardens, leaf-chewing caterpillars (often armyworm/cabbage looper types) and leaf spot problems can show up on Amaranthus hybridus, especially in warm, humid weather. Hand-pick caterpillars early and spray the undersides with an insecticidal soap if you see ongoing feeding; for leaf spot, remove badly spotted leaves, improve airflow, and water at the soil line to keep foliage dry.

How often should I water Oscar Blanco amaranth during the main growing phase (after it sprouts)?

During active growth, keep the top 1–2 inches of soil consistently moist but not soggy—aim for roughly 1 inch of water per week, split into 2–3 waterings if it’s hot. Let the surface dry slightly between waterings; avoid standing water, which can stress roots and worsen leaf issues.

How can I tell when Oscar Blanco (Amaranthus hybridus) is ready to harvest?

Harvest when plants reach their mature size and the leaves are fully expanded, usually around 70–90 days after sowing depending on conditions. Pick outer leaves first (and/or harvest whole young plants) before leaves become overly tough or the plant starts shifting strongly into seed production.