Arum lily care and growing is not difficult, read this article to learn “How to Grow and Care for it”.

A beautiful and spectacular flower, arum lily care and growing is easy. It is ideal to decorate gardens, terraces and balconies. Arum lily, also called “calla lily” is a perennial from Araceae family.

Its rigid and vertical flower stalk ends in a spathe flared funnel that hides a yellow or orange spadix. Arum lily flowers usually bloom in summer to early fall and are very unique and marvelous to watch.

USDA Zones— 8 – 11, *can be grown in cooler zones with care in winter

Difficulty— Easy

Other Names— Calla Lily,

Soil pH— Slightly Acidic to Neutral


Calla lily is an extremely toxic plant. It is advised to plant it away from the reach of children as it should not be eaten under any circumstances, and care must be taken with its sap when cutting or pruning, as this is very irritating.

Also Read: 13 Most Common Flowers that are Poisonous

Arum Lily Care and How to Grow it

Propagation and Arum Lily Planting

The simplest and quickest solution for growing arum lily is to multiply it by division of rhizomes or plant bulbs. You can also grow it from seeds: Sow seeds on the surface of a hot and humid soil in spring or summer. Keep them in a bright location. Germination takes place between 1 and 3 months. The ideal germination and growing temperature is around 60 F (15 C).

*In tropics and warmer zones: USDA Zones 8 – 11 or other parts of the world, grow it anytime, when temperature stables around 60 F.

In the garden

Plant arum in spring, in a humus rich soil, 15 cm deep with a spacing of 30-40 cm between each plant. Water generously during the growing season without leaving the soil dry between two watering spells.

In the Pot

For cooler climate, growing arum lily in pot is best. This way you can move it inside in winter. In a small garden, balcony or terrace, pot grown arum lily looks beautiful. Choose loam based potting mix for optimum growth.

Requirements for Growing Arum Lily


For growing arum lily choose a location that is sunny but not hot. If you are growing arum lily in warm climate, plant it in partial shade. It is also sensitive to cold drafts and windy exposure.

If you are planting arum lily in pot on balcony or terrace, choose a spot that is less windy. The arum can also be planted near a pond or stream, and even directly into the water. It is indeed a semi-aquatic plant.


The arum prefers a deep and evenly moist soil, rich in organic matter.


This plant grows very well at the edge of a pond that reveals its great watering needs. Water arum lily thoroughly and regularly. In dry substrate, it does not flourish.

Arum Lily Care

Arum lily care and maintenance is relatively simple:


Arum lily is a demanding plant and needs regular fertilization. In growing season, fertilize it every month with a liquid fertilizer for bulbs. Follow manufacturer’s instructions to avoid over fertilization.


Mulch the base of the plant with organic matter to protect it from cold.

Also Read: Using Grass Clippings in the Garden


For maintenance as well as to keep the plant healthy and beautiful, pruning is necessary. To learn how to prune it, read this.


Arum lily grown in pot should be repotted once it outgrows the container and seems rootbound. Always use a few centimeter larger container than the previous one.


Arum lily care in winter is easy in climates with mild winter (USDA Zones 8 – 11). Whereas, in cooler zones you will need to save the bulbs from frost, collect and dry them in sun for a few days and remove excess soil.

Move the potted plant indoors or in a greenhouse and keep that in temperature around 50 F (10 C) and reduce watering.

Diseases and Pests

It can be affected of fungal diseases like root rot or collar rot. In pests it may be attacked by aphids, mites and mealybugs.

Also Read: Amazing Peace Lily Benefits

Zantedeschia Aethiopica

Zantedeschia Aethiopica, commonly known as Arum lily is a clump forming, semi-evergreen perennial which is a true beauty when flowered! With arrow shaped, dark green, glossy leaves sitting low beneath the flowers.

In the months of May and June the Zantedeschia Aethiopica produces these stunning tall stems up to 40cm in length and pure white, funnel shaped flowers with yellow centres, a true beauty that really contrasts with the dark green foliage which creates a low clump underneath these.

Often grown close to a water’s edge to create a lovely reflection against the water although other recommended planting locations include flower beds, borders and wall side edges to create some height. Coping in colder, poorly drained areas of the garden, including containers or baskets if with aquatic composts.

Zantedeschia Aethiopica Care

The Zantedeschia Aethiopica survives and grows well in moist, boggy areas, in full sunlight and dappled shade. In fact this perennial can be in water up to about 30 cm in depth!
Generally disease free and requiring no pruning makes the Zantedeschia Aethiopica a fantastic low maintenance perennial that’s suited for almost any garden and any location. We would recommend applying a good layer of mulch in the winter months to protect from the harsher weather and to grow in the coming season a more healthy, clump forming growth.

Arum lily: declared pest

Form: herbaceous — perennial

Status: present in WA


Arum lily is a robust, dark green, succulent herb, also known as calla or white arum lily. It was introduced to WA from South Africa as a garden plant and subsequently escaped to become established as a weed. It is found in creeks, irrigation ditches and areas of summer-moist land in the higher rainfall south west of WA, often forming large dense clumps.

Arum lily competes with valuable perennial pasture plants on summer land. It has been claimed to cause eczema in humans. Stock deaths have occurred from grazing arum lily.

Arum lily has fleshy roots and forms extensive tubers which store food for future use. The roots when boiled provide a starchy food for some South African tribes, however, they are poisonous when eaten raw.

Arum lily spreads vegetatively by regeneration from tuber fragments and by seeds.

Leaves: the petioles (leaf stalks) are up to 0.4 metres long and smooth; the leaf blades are thick and fleshy, pointed at the apex with blunt lobes at the base.

Flowers: white to greenish white and tubular flowers, becoming funnel shaped at the top with a slit down one side. Flowering takes place in spring.

Fruit: the berry is oval, yellowish, about one centimetre in diameter and contains several round seeds about three millimetres in diameter.

Online weed identification training

Login or set up a new account on to access:

  • a training course on how to identify arum lily and report it.
  • training material that you can use to teach community groups how to identify arum lily.

Agricultural and economic impact

Toxic to livestock and invades pastures.

Declared pest category

The Western Australian Organism List (WAOL) contains information on the area(s) in which this pest is declared and the control and keeping categories to which it has been assigned in Western Australia (WA). Use the following WAOL link to reach the declaration and declaration map for: arum lily.

Requirements for land owners/occupiers and other persons

Requirements for land owners/occupiers and other persons if this pest is found can be sourced through the declared plant requirements link.

Search > detect > report

Detectability: easy to find. Arum lily is a very conspicuous plant with large leaves and large white flowers. A form with green-and-white flowers is grown as a garden plant and is also a declared plant.

Who is likely to find it: general public, members of biosecurity groups and some community groups (especially those with an interest in wetlands and/or water courses).

When to find it: most noticeable when it flowers, mainly from spring to early summer, though it can flower at other times of the year. Its distinctive large leaves are noticeable a month or two before flowering begins.

Where to find it: in wetlands, along rivers, streams and creeks, seasonally wet areas in low-lying pastures, under trees where birds perch, in dunes and coastal heath, and gardens. Sometimes found on sale at carpark markets and on trading websites.

Report: if plants (not flowers) are being sold or given away to the Pest and Disease Information Service (PaDIS) using the contact details given below.

Control method

Control methods for this declared plant can be found through the arum lily control link.

Calla Lily Care – Tips On Growing Calla Lilies

Although not considered true lilies, the calla lily (Zantedeschia sp.) is an extraordinary flower. This beautiful plant, available in a multitude of colors, grows from rhizomes and is ideal for use in beds and borders. You can also grow calla lilies in containers, either outdoors or in a sunny window as houseplants. Here are a few tips on growing calla lilies that will make them sparkle in your yard.

Tips on Growing Calla Lilies

It is easy to grow calla lilies. These plants do not generally require too much attention. Proper planting and location are about the only important things to consider when growing calla lilies. Care of calla lilies requires that they be planted in loose, well-drained soil. They prefer to be located in full sun or partial shade in warmer climates. Calla lilies are typically planted in the spring. However, wait until the threat of frost has passed and the soil has warmed sufficiently before planting calla lilies.

Calla lilies

should be planted rather deep, about 4 inches (10 cm.) for greater results, and spaced approximately a foot apart. Once planted, the area should be watered well. Calla lilies enjoy being kept moist and will also benefit from a monthly dose of fertilizer throughout the growing season.

Calla Lilies Care

As with planting, there’s not too much required for the care of calla lilies other than keeping them watered and fertilized. An adequate layer of mulch around the plants will help keep the area moist and free of weeds. Calla lilies require a dormant period once flowering has ceased. During this time, you should refrain from watering as much to allow the plant to die back.

If you grow calla lilies in containers, cease watering and move the plant to a dark area once the foliage has faded. Regular watering can resume within two to three months. Although calla lilies can remain in the ground year-round in warmer climates, they should be lifted and stored in cooler areas.

Care of Calla Lilies Over Winter

Dig up the rhizomes in autumn, usually after the first frost, and shake off any soil. Allow them to dry out for a few days before storing the rhizomes for winter. Calla lilies should be stored in peat moss and located in a cool, dry area, preferably dark, until warmer temperatures return in spring. Likewise, you can choose to start your calla lilies indoors during late winter and transplant them outside in spring. Calla lilies can also be divided when lifted or during their dormancy period.

Growing calla lilies is easy and calla lilies care is minimal at best. Choosing to grow calla lilies in the garden or as houseplants is a great way to add color to any area. These tips on growing calla lilies will help you enjoy these lovely flowers even more.

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