How to Grow Helipterum Plants in your Garden

Gardener's HQ Guide to Growing Everlasting, Australian Everlasting & Yellow Billy Buttons

These hardy annuals or half hardy annuals reach a height of about 30 cm (12 inches).

Helipterum carry daisy like flowers of red pink or white that flower in the summer.

Their size makes them ideal border plants. Some of the common names for Helipterum include Everlasting, Immortelle, Australian Everlasting, and Mangles Everlasting.

Helipterum pierrot
Helipterum pierrot - Crisp Everlasting by Anniesannuals; creative commons.

Rhodanthe chlorocephala
Rhodanthe chlorocephala (previously Helipterum) Paper everlasting by Quadrapop; creative commons.

Growing and Care Guide

Common Names: Australian Everlasting, Crisp Everlasting, Immortelle, Yellow Billy Buttons.
Life Cycle: Hardy annual. Half hardy annual.
Height: 6 to 20 inches (15 to 50 cm).
Native: Australasia.
Growing Region: Zones 3 to 10.

Flowers: Summer.
Flower Details: Red, white, pink, yellow. Daisy-like. Buttons.
Foliage: Grey-green leaves. Wiry stem.

Sow Outside: Cover seed. A few weeks after the last frost. Spacing 6 to 10 inches (15 to 25 cm).
Sow Inside: Usually started indoors in cooler areas. Use peat pots. Germination time: two to three weeks. Temperature 70 to 75°F (21 to 24°C). Seven or eight weeks before expected last frost. Transplant outdoors a couple of weeks after the last frost.

Requirements: Full sunlight. Sandy soil. Light soil. Dry soil. Provide support.
Family: Asteraceae.
Miscellaneous: The Helipterum genus has been sub-divided many times. Plants that used to be found in this genus may now belong to the following genera: Anemocarpa; Chrysocephalum; Erymophyllum; Gilberta; Hyalosperma; Leucochrysum; Rhodanthe; Syncarpha; and Triptilodiscus. It is also synonymous with the Acroclinium genera.

How to grow Everlasting (Helipterum)

Everlasting are valued by flower arrangers as once dried their flowers last for a very long time. They therefore make an ideal plant to grow in the garden for anyone with an interest in indoor flowers.

If you want to grow them outdoors from the off, then sow the seeds about a month before the last frost of spring. Simply cover the seeds. Everlasting like to grow in a sunny part of the garden that has a light sandy soil.

If you want to start off Everlasting and other Helipterum members indoors, then the growing process should start about 5 weeks before they are due to be transplanted into the garden. Transplant out after the last frost of spring.

They should be sown in peat pots, and the seed lightly covered with soil. It should take from between two to three weeks to germinate at 18 to 24 degrees Celsius (64 to 75°F).

Once seedlings are ready they should be grown outdoors, spaced about 20 cm (8 inches) apart.

Caring for Everlasting plants

As Everlasting plants are attractive to aphids, you may like to either encourage ladybirds. Otherwise treat the plants to prevent infestication.

I hope that you enjoyed this guide on how to grow Helipterum plants. You may also enjoy the following Gardener's HQ growing guides: How to grow Bellis, Glory of the Snow, and Ursinia plants.