Not all Orchids need to grow on trees, only the epiphytes, terrestiall Orchids grow in the soil.
how many orchids are there in the world
The wealthy began growing orchids in the midninteenth century in greenhouses to mimic native conditions. They had to learn to have ventilation to best grow the orchids.
less ephilyte orchids are often grown on coconut husk
some types of flowers are orchids and bromeliads
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hibiscus, and morning glory grow singly
yes they do.
tropical rain forest
Orchids grow on tree bark in the tropical forest. Can't elaborate any further sorry
They will grow in both, and they will just grow and probagate, most Orchids are "Epiphytes", they attach themselves to plants but generally to trees, they are not parasites they just use the plant or trees for support.Other Orchids are "Lithophytes, they grow on rocks, stones etc.There are some that are called "True Terrestrials", they grow in soil as opposed to the "Simiterrestrials" which grow on the ground on decomposing matter.Please see related link below.