Copperhead

Amaranth

Zone 2a Save Garden

🌱 60d to harvest Upright

Feel the velvet, coppery glow of Copperhead amaranth as its tender leaves unfurl in rich, warm tones—an eye-catching harvest with…

Crop Dates

Milestone	Date
Start Indoors	May 4th
Last Frost	May 25th
Transplant / Sow Outdoors	Jun 1st
Harvest Begins	Jul 31st
Harvest Ends	Aug 29th

Crop Details

Trait	Value
Days to Maturity	60
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	50
Min Night Temp (°F)	40
Harden Off (days)	5

Recommended Companions

Marigold Marigold

Magellan Coral Zinnia

Frequently Asked Questions

What pest or disease most commonly affects Amaranthus cruentus (Joseph’s Coat), and what should I do?

Amaranthus cruentus is especially prone to leaf-chewing caterpillars (often cutworms/armyworm types) that can strip leaves quickly. Hand-pick early, then spray in the evening with Bacillus thuringiensis (Bt) when caterpillars are small; repeat every 5–7 days until damage stops. If you see blackened, wilting stems or spots after humid weather, remove affected plants and improve airflow (space plants) to reduce fungal spread.

How often should I water Amaranthus cruentus during its main growth (around weeks 2–8)?

During active leaf growth, keep the top 1–2 inches of soil evenly moist but not waterlogged—typically watering 2–3 times per week depending on heat and soil texture. Use a deep soak so water reaches the root zone, and let the surface dry slightly between waterings to prevent stem/leaf diseases. If wilting shows up at midday but plants perk up by evening, increase the next watering rather than keeping the soil constantly wet.

How do I tell when Amaranthus cruentus is ready to harvest?

Harvest at about 50–60 days when plants have abundant tender leaves and the stems are still flexible (not woody). Pick the youngest outer leaves first or cut the tops for a fuller harvest; leave the lower leaves so it can regrow. For best quality, harvest in the morning before midday heat reduces tenderness.

Feel the velvet, coppery glow of Copperhead amaranth as its tender leaves unfurl in rich, warm tones—an eye-catching harvest with a pleasantly earthy, slightly sweet flavor. The foliage is crisp and succulent at maturity, offering a satisfying bite that shines in fresh salads and quick sautés, and it also lends its color and body to hearty soups and vibrant sauces. Grow Copperhead for a bold, garden-to-table statement that looks as remarkable as it tastes.

Sowing Tips

Transplant Conditions

Wait until soil reaches 50°F and nights stay above 40°F before moving outdoors. Harden off for 5 days first.

Expert Note

For best copper-red color, grow Copperhead in full sun and avoid over-fertilizing with nitrogen.