Europe, Middle East
The genus Arum belongs to more than 20 herbaceous rhizomatous perennials. These are monoecious plants with a rounded tuber shape. They are characterized by long spear-shaped leaves (in the form of an arrowhead), growing on long petioles from the base of the plant. The leaves have very pronounced veins. The inflorescence is an ear (with a colored thickened main axis), wrapped in a very bright bract (reborn leaf) - the so-calledе cover. Autumn on the Arum are formed very decorative red berries. Arum italicum is an unpretentious species with decorative whitish veins on the upper side of the leaves, which often last all winter, but in summer they dry out quickly enough. A yellowish coverlet encloses a light -yellow cob inside. Common varieties: 'Chameleon', whose leaves are covered with a marble gray-green and yellowish-green pattern, and 'Painted' - with thin leaves in white streaks.
On the Cretan arum (A. creaticum) in spring, very bright flowers with yellow veils are formed, from which long yellow cobs peek out; leaves of a beautiful dark green color.
Arum Dioscorides (A. dioscoridis) - a delicate species with a characteristic blanket color: purple or light green with black spots.
Arum mottled (A. maculatum) - resistant species; leaves are covered with black spots; inside the cover is a purple-pink cob.
Arum Palestinian (A. palestinum) is native to the Middle East. It is a delicate species with leaves about 15 cm long. A blanket, greenish on the outside and blackish-red on the inside, wraps the ear-also black.
Location: partially shaded
Temperature: minimum -10 to 7 °C, optimal 14-22 °C
Watering: during the growing season – abundant
Flowering time: in spring
Height: from 30 cm to 1 m
Transplanting: in the spring
Appearance maintenance: not required
Diseases and pests
Phytophthora can cause rotting of roots and rhizomes. The leaves dry, and the flowering is less intense. Another fungus of the genus Phylostictosis provokes the appearance of brown spots on the leaves. You can get rid of these infections by treating the plants with fungicides. The defeat of the causative agent of the black leg (Erwinia carotovora) leads to the fact that the rhizomes become limy, wet and spread an unpleasant smell, and the leaves turn yellow. The plant affected by bacteriosis is discarded.
Tiny nematode worms present in the soil cause growths (galls) to appear on the roots. Aphids, mites and thrips sometimes settle on the stems and leaves of plants, all of which are disposed of by treatment with appropriate insecticides.