These roots are perfectly adapted for anchoring orchids to tree branches and rough bark. Orchid roots are also capable of photosynthesis—they’re coated with a spongey covering called velamen ...

Your recently imported ornamental tree might have a stowaway spider or lizard hidden in its branches, a recent study warns.

While orchids can be brought home in full bloom if not taken care of properly, the flowers can drop off, and the plant can die. "Overwatering is a common killer of orchids," said Graham.

For example, the Australian hammer orchid has taken advantage of a mating ritual of the Thynnid wasp, which involves a female wasp waiting on top of a branch or plant for a male to spot her.

Of course, it is time for the 22nd Annual Orchid Show, and that show’s mission, Joanna L. Groarke, the garden’s vice president for exhibitions and programming, said is to deliver a “shot of ...