There are four types of flowers that cannot be grown indoors:

1. Flowers and plants that are prone to produce odor: For example, coniferous plants secrete a lipid substance with a rosin oil smell, which is harmful to The human body's gastrointestinal tract has an irritating effect. If you smell it for a long time, it will not only affect your appetite, but also make you upset, nauseated, vomiting, and dizzy. The odor emitted by jade lilac can also cause asthma and boredom.

2. Oxygen-consuming flowers and plants: such as cloves, tuberose, etc., consume a lot of oxygen during photosynthesis. In addition, they also disperse large amounts of particles at night that strongly stimulate the sense of smell, making patients with high blood pressure and heart disease feel suffocated.

3. Flowers and plants that can cause allergies: Some people will develop skin allergies when they touch hydrangeas, geraniums and other flowers and plants.

4. Poisonous flowers and plants: such as tulips, mimosa, poinsettia, oleander, white azalea, etc. Tulip flowers contain poisonous alkali. People who stay in these flowers for 2 to 3 hours will feel dizzy. In severe cases, their hair will fall off. White azaleas contain tetracyclic diterpenoid toxins, which can cause vomiting, difficulty breathing, numbness of limbs, and even shock after poisoning.

Extended information:

Flowers and plants are suitable for growing indoors:

1. First, plants that can absorb toxic substances. Such as aloe vera, spider plant, sansevieria, monstera, etc. Studies have shown that spider plants and tiger tail plants can absorb more than 80% of indoor harmful gases, and aloe vera is also good at absorbing formaldehyde.

2. The second is plants that can purify the air, including crape myrtle, magnolia, cactus, epiphyllum, ivy, iron tree, chrysanthemum, pomegranate flower, prickly pear, etc.

3. The third is radiation-resistant plants. Succulent plants such as cacti, gem flowers, and sedums can effectively reduce electromagnetic radiation pollution generated by various electrical appliances.

4. The fourth is anthelmintic and bactericidal plants. Some plants have special aromas or odors that are harmless to humans, but mosquitoes, cockroaches, flies and other pests will avoid them if they smell them. Some aromas can also inhibit or kill germs, such as pyrethrum, wild chrysanthemum, purple jasmine, lemon, crape myrtle, mint, etc.

People's Daily Online - Category 4 flowers and plants must not be kept indoors as they will ruin your health.