Gomphrena Growing Guide

Gomphrena, also known as Globe Amaranth

Crop Rotation Group



Well-drained soil of average fertility.


Full sun.

Frost tolerant

None. Gomphrena is a warm-season annual.


Mix a light application of a balanced organic fertiliser into the soil prior to planting. In midsummer, drench plants with a liquid fertiliser to prolong bloom time.


Because of the unusual round shape of gomphrena flowers, they provide great contrast in form when combined with annuals that have upright spikes or flat, daisy-shaped blossoms.


Single Plants: 20cm (7") each way (minimum)
Rows: 20cm (7") with 30cm (11") row gap (minimum)

Sow and Plant

Sow gomphrena seeds indoors to get a head start, or outdoors where you want the plants to grow at about the time of your last spring frost. Many gardeners purchase gomphrena seedlings as inexpensive bedding plants. Allow 30cm(12 inches) between tall varieties.
Our Garden Planner can produce a personalised calendar of when to sow, plant and harvest for your area.


Gomphrena stems make long-lasting cut flowers. In warmer areas, gomphrena sometimes reseeds but it is never invasive. Colours include purple, white, and orange.


Gather blossoms to use as cut flowers just after they open. If you like dried flowers, harvest blossoms when they have good colour, strip off the leaves, and hang them to dry in small bunches in a dry, well-ventilated place.


Tall varieties grown as cut flowers may need staking. Late in the season, tired plants often develop leaf spots of powdery mildew.

Planting and Harvesting Calendar

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Pests which Affect Gomphrena