Monday, August 7, 2017

5 loại cây độc mà nhiều người trồng ở Mỹ

1. Oleander (Nerium)
Oleander is one of the most popular ornamental plants in arid regions. It requires little water or maintenance, grows lush green leaves and dazzling flowers. In fact, it's one of the most common ornamental plants in Southern California, planted in people's backyards and along freeways. The only problem is it's one of the most poisonous plants in the world. Toxic compounds include nerioside, oleandroside, and saponins. Wear gloves when working with oleander because the sap causes skin irritation and one leaf, if swallowed, is potent enough to kill a child. Be careful about using as mulch or compost, because the poison takes time to break down.
oleander cultivar ‘Hardy Pink’ ‘Mrs. Lucille Hutchings’‘Tangier,’‘Pink Beauty’
 ‘Album’
 
‘Petite Salmon’  ‘Petite Pink,’ 
2. Castor Bean Plant (Ricinus communis)
Like oleander, the castor bean plant is a handsome drought resistant ornamental and grows along roadways and trails in Southern California. Castor oil is sold as a laxative (side effects include stomach cramps and explosive diarrhea) and is also used in the production of adhesives, lubricants, and paints... Yum! The plant also contains one of the most deadly natural poisons known: ricin. One miligram is enough to kill an adult. So even though the seeds look like edible beans, do not eat them.
3. Nightshade (Solanum)
Nightshades are in the same genus as tomatoes and potatoes and other edible vegetables. Various nightshades are used as ornamentals (such as Jasmine nightshade and Chilean potato vine) or grow wild around North America (such as Blue Witch nightshade). The ornamentals are favored for their long flowering periods. However, as the name implies, these plants are also closely related to Deadly nightshade and are riddled with the toxic alkaloid atropine. Despite the sweet flavor of their berries, do not eat. These are the plants that give unidentified red berries a bad name.
4. Azaleas (Rhododendron)
The state flower of Washington, it is appreciated by gardeners for its beautiful flowers and fragrance. But they can also be poisonous. For instance, the American rhododendron (Rhododendron maximum) has poisonous leaves. Even the pollen from some rhododendrons, like the yellow azalea (Rhododendron luteum), contains the poison grayanotoxin. In rare instances, honey made from pollen gathered from these flowers can cause a poisonous reaction called honey intoxication.List of Rhododendron species

A

B

C

D

E

F[edit]

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

5. Angel's Trumpet (Brugmansia)
Angel's trumpet is so named for its large trumpet-shaped flowers, which also exude a sweet perfume. However, this beauty is in the same family as nightshades. All parts of the plant are poisonous if ingested. In small amounts, it induces hallucination, but at larger doses it can be lethal. It is not recommended to consume any part of the plant in any amount.

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