Named after the Italian botanist Francesco Zantedeschi. This plant is used as house-plant during the early part of the year. The white arum lily is Zantedeschia aethiopica. There are also other species some with coloured spathes. Dormant rhizomes, however, if given suitable care, can be brought into new growth for many years.
Germination Temperature (°F)
When the plant is in full leaf, water plentifully as often as necessary to keep potting mixture thoroughly moist, infact potted Zantedeschia can stand in saucer of water. When the plant stops flowering, reduce the amount of water gradually and stop watering when the leaves become yellow.
Apply standard liquid fertilizer every 2 weeks when in full leaf and increase to weekly when flowers begin to show until the end of the flowering season.
Re-pot in Autumn into pots one size larger. A single flowering size plant can be potted in a 6 inch pot. Larger clumps need larger pots.
Sow seeds on the surface of seed compost in Spring and keep seed tray in lit position. Seeds do not germinate all at once.
Divide rhizomes, or detach offsets in Autumn. Plant single sections in a 6 inch pot of moistened compost. For small offsets use 3-4 inch pots. It is also possible to propagate from seeds.
While they are flowering, keep plants at normal room temperature. It can be placed out of doors during Summer months. Leave the plant dried out in their pots for the entire rest period, whether if it is indoors or outdoors.
Pull away faded leaves.
Provide bright light with some direct sunlight during the month when it has foliage. While it is dormant keep the dried-out plant in a sunny spot in the garden or outdoor balcony where there is no risk of frost or very wet weather.
John Innes #3 compost.
All parts of the oleander (Nerium oleander), a beautiful Mediterranean-native flowering shrub, are poisonous. Ingesting oleander leaves can cause gastrointestinal, cardiac, and central nervous system problems and possible death.