What Are the Different Poison Ivy Symptoms?

Acanthaceae evergreen vine shrub with soft stems and many attached roots that can be adsorbed to other objects or plants. The leaves are alternate, the petioles are longer, entire or 3-12 lobed. Umbrella inflorescence, small flowers, bisexual, slightly green, styles combined into short cylinders, berrylike drupes. Native to North Africa, Europe, Asia subtropical or temperate. Common cuttings, ramets, and batting methods are used to breed.

Ivy

Family:

"Hedera" originates from a plant in ancient Latin, hedera, whose basic meaning is "catch", which means

Evergreen vine shrubs in the family Acanthaceae. Most of the ivy plants have vine stems, and the stems save energy and grow.

Sexuality is cold and cold, the fertility in the autumn to spring in South China is good, and the summer temperature is high, it is necessary to prevent physiological diseases. Strong sex, strong adaptability, suitable growth temperature is 20 ~ 25 . It is cold-resistant and grows best in a slightly shaded environment, but can grow normally in an environment with sufficient light or no direct light. The soil and moisture requirements are not strict. Neutral or slightly acidic soil is suitable.

Ivy has a strong growth potential and has less stringent requirements on soil and moisture. Cultivation and management is relatively easy. Mix turf soil: garden soil: river sand at a ratio of 1: 1: 1, but humus loam is preferred.

Commonly used

There are few diseases and no fatal diseases. Occasionally, bacterial and fungal diseases, such as leaf spot, should be caused by excessively dense and poorly ventilated areas. Prevention and treatment should be strengthened, cultivation management should be strengthened, fertilizers should be used reasonably, and plant resistance should be enhanced. Once onset, drugs should be used in time, agricultural streptomycin, carbendazim, etc. can achieve good results. Harmful insect pests, mainly J. spp. And mites, can be selected from S. J. sacrifice, dicofol, bromomite emulsion and omethoate.

Ivy plants are evergreen in all seasons, the leaves are colorful, the leaf shape is varied, and the branches and leaves are sparse and scattered, which is very popular.

Ivy-like western ivy

Latin name: Hedera helix
Morphological characteristics: evergreen vine, stem length up to 30 meters, leaf length of 10 cm, often 3 to 5 lobes, flower branch leaves generally entire. The surface of the leaves is dark green, the back of the leaves is pale green, the flowers and leaves are ovate, the pedicels and tender stems have off-white stellate hairs, and the flowers are finely serrated. Flowering in October, the following July the fruit matures. The fruit is black. Thin yellow.
Origin: Europe, US Canary Islands, North Africa and Asia. Zhengzhou has introduced.
Major variants:
---> Poet Ivy (var.chrysocarpa): leaves are lobed, young leaves are 5-7 cleaved, yellow-green, leaves on flowering branches are rhombic, lanceolate, entire. The fruit is yellow.
---> Klima ivy (var.Taurica): leaves lanceolate, 3-lobed, bright green, with distinct veins.
---> Ice and snow ivy (var.glacier): short stem nodes, dense leaflets. The leaves are small, 3 to 4 cm long and 2 to 3 cm wide. The leaves are green in color and have milky white to yellow-green markings.

Ivy-like Persian Ivy

Latin name: Hedera colchica
Morphological characteristics: Vine, leaves broadly ovate, leathery, 8-12 cm long, 6-10 cm wide, entire, thin 3-lobed, green, shiny. Umbellate; large fruit.
Origin: Caucasus and Iran. Zhengzhou has introduced.

Ivy canarian ivy

Latin name: Hedera canariensis
Morphological characteristics: Fujimoto, stem 20-30 m long. Stem climbs high, with stellate hairs. Leaves ovate, leathery, base heart-shaped, 5-25 cm long, 10-15 cm wide, entire, light green, base heart-shaped, lower leaves 3-7 lobed, racemes or panicles, covered with flowers Stellate hairs. Berries, fruit black.
Place of Origin: Canary Islands, Matera Islands, and North Africa. Zhengzhou has introductions.
Major variants:
---> Variegated leaf Canary Ivy (var.albimaculata): The leaf mulberry has white and yellow spots.
---> Upright Canales ivy (var.arborescens): erect shrubs with climbing stems.
---> Silver edge Canarian Ivy (var.argenteimarginata): Leaf edge is white.

Ivy ivy

Latin name: Hedera nepalensis
Morphological characteristics: evergreen vine. It can reach more than 20 meters in length; there are epiphytic roots on the stem; rust-colored scales on the young leaves; leaf type II, triangular oval or halberd on sterile branches, whole or three-lobed; length 5-12cm, width 3 One 10 cm, leaves entire or 3-lobed, apex acuminate, base truncate. Umbellate, usually solitary, or 2-7 flowers on top of branches; flowers fragrant; copious brown scaly hairs; petals 5, triangular ovate. Flowering from June to July and fruiting from September to October. The flowering branches are oval or lanceolate, entire; petioles are slender, umbrella-shaped inflorescences terminal, light green and white, aromatic; fruit black.
Place of Origin: Originating from East China, Central China, South China and Funiu Mountain and Dabie Mountain in Henan. Zhengzhou is cultivated.

Ivy leather leaf ivy

Latin name: Hedera colchica
Morphological characteristics: evergreen shrubs. The leaves are 10-12 cm long, 10 cm wide, broadly ovate, entire, and the lower leaves are occasionally 3-lobed, leathery, green, shiny, and the fruit is large.
Major variants:
---> Upright leather leaf ivy (var.arborescens): upright shrubs, not climbing.
---> Variegated leaf ivy (var.dentata): leaves with many small cracks.
---> Purple Leather Leaf Ivy: The leaf color is dark green with purple.

Ivy, japanese ivy

Latin name:
Morphological characteristics: evergreen vine. The petiole is 2 to 5 cm long. The leaves are dark green and shiny, and the young leaves are 3- to 5-lobed. The leaves on the flowering branches are round to lanceolate. Terminal umbrellas, yellow-green.
Major variants:
---> Taiwan diamond leaf ivy (var.formosana): The leaves are ovate to broad-lanceolate and sharp.
---> White spot Japanese ivy (var.argenta): The leaves have silvery white spots.
---> Mosaic Japanese Ivy (var.variegata): The leaves have white edges, green and white markings in the middle, and a dark green part remaining in the center.