The characteristics of arum
- Type: flower and flowering plant
- Height: up to 1m
- Flower color: white, brown, yellow, purple
- Desired exposure: sunny, semi-shaded
- Type of soil: normal, well drained
- Interview : moderate watering
- Sanitizing: Yes
- Diseases and pests: root rot, leaf spots, viruses transmitted by thrips
- Varieties: Arum rose, Arum rouge, Arum noir, Arum du fleuriste (blanc), Arum Picasso
Origins and characteristics of arum
The arum (Zantedeschias) or calla belongs to the Araceae family and includes nearly 25 species. This rhizome flower can reach a height of one meter. TheArum italicum does not exceed 60 centimeters.
It is a swamp plant, which grows naturally in South Africa. It was introduced in France in the 18th century.
If its flowers are particularly beautiful and known to decorate churches and bridal bouquets, some nevertheless emit a slight odor of carrion which attracts flies and helps their pollination. Others, on the other hand, have a pleasant odor while some give off no perfume.
White arum is the one you find at the florist. The varieties of arums suitable for growing in pots or in the ground are thearum red, pink, Picasso, arum maculatum (spotted) or the very surprising black arum.
As a whole, arum is a poisonous plant. So be careful not to leave it within the reach of young children or animals.
Planting arum is done in the spring, between March and May, in a sunny location. It is necessary to space the bulbs about thirty centimeters and to plant them about five centimeters deep. In pots, arum thrives just as well and allows a small space to flower, such as a balcony. However, this method of cultivation requires the regular supply of fertilizers.
The soil in which you are planting should be deep, rich and moist.
Arum particularly likes sunny places, but make sure the exposure is not hot (like behind a glass, for example).
Maintenance of arum
It should be watered from the start, without flooding the plants, and regularly throughout flowering. Yes arum withstands winter well as long as you protect the plans with straw, you must nevertheless cut the very short stems before the first frosts. Be careful to wait until the leaves turn yellow so that the plant can build up reserves. For a pot culture, the bulb will be left to stand in winter in a punctured box after cutting the yellow stems.
When the leaves are wilted, it is necessary to cut them. This size will allow the plant to provide other flowers.
The simplest and fastest solution to multiply arum is the method of dividing the stump. Take suckers in the spring for non-hardy species and in the fall for other species.
Root rot, leaf spots are diseases that need to be treated with a fungicide. The ideal crop, as a rule, is to exterminate sick plants and disinfect the soil and various gardening tools. Watch out for thrips, insects that transmit a virus to arum. Showering plants and insecticide can get rid of it.
To control aphids, which can attack your arum plants, you can use ladybugs, which will be very effective.
It should be noted that the arum is poisonous and must in no case be ingested. Its berries and leaves, highly toxic to humans, can prove fatal.