Amaranthus Red Spike Seeds

Amaranthus cruentus — Amaranthus Red Spike is a tall ornamental amaranth with dramatic upright burgundy-red flower spikes for borders, cutting gardens, and dried arrangements.

This guide covers growing conditions, seed-starting basics, garden uses, and ordering information for Seedman customers.

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Amaranthus Red Spike with tall burgundy-red upright flower spikes

Plant Profile

Botanical Name:
Amaranthus cruentus
Common Name:
Amaranthus Red Spike
Category:
Ornamental amaranth seeds
USDA Zones:
Warm-season annual
Height:
Tall annual, often 4–6 ft
Light:
Full sun

Why Grow Amaranthus Red Spike?

Amaranthus Red Spike is a tall ornamental amaranth with dramatic upright burgundy-red flower spikes for borders, cutting gardens, and dried arrangements. It is a useful addition for gardeners looking for distinctive seed-grown plants with ornamental, edible, ecological, or collection value.

Seed Germination Guide

Sow seed after frost when soil is warm, or start indoors. Cover lightly, keep warm and moist, and transplant to full sun.

Seed germination can vary by freshness, storage, temperature, and growing conditions. Use clean containers and a well-drained seed-starting medium.

Garden & Landscape Uses

Amaranthus Red Spike can be used in appropriate climates and garden styles where its mature size, sunlight needs, and moisture preferences are matched to the site. For best performance, provide full sun and soil conditions suited to the species.

Order Amaranthus Red Spike Seeds

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Frequently Asked Questions

What is Amaranthus Red Spike grown for?

It is grown for tall upright burgundy-red flower spikes and dramatic garden presence.

Can it be used as a cut flower?

Yes. The long spikes are useful fresh and can also be dried.

Does it tolerate summer heat?

Yes. Amaranthus is a strong warm-season annual for hot sunny gardens.

How should it be planted?

Plant in full sun after frost danger has passed and give plants room for tall growth.