Amaranthus cruentus makes a striking statement in beds or borders. Growing to 6 feet in height, it bears somewhat fuzzy-looking spires of purplish red flowers in summer, followed by seed heads that can be red, purple, or yellow. It is native to tropical regions of North and South America, and is one of three Amaranthus species cultivated for their grain.
Noteworthy CharacteristicsTall tropical with large plumes of purple-red flowers.
CareFull sun. Moderately fertile, moist soil with lots of organic matter. During dry spells, water freely to prolong flowering.
PropagationSow seed at 68°F in mid-spring.
ProblemsWhite rust, brown rust, Cercospora leaf spot, and Phyllosticta leaf spot can affect foliage, and root rot can also be a problem. Amaranthus are also prone to aster yellows, viruses, and aphids.
- Genus : Amaranthus
- Plant Width : 1 to 3 feet
- Plant Height : 3 to 6 feet
- Plant Type : Annuals
- Bloom Time : Fall, Summer
- Light : Full Sun
- Moisture : Medium Moisture
- Maintenance : Moderate
- Growth Rate : Moderate
- Flower Color : Red
- Characteristics : Showy Seed Heads
- Plant Seasonal Interest : Summer Interest