A Danish company modified a version of thale cress (plant), that changes from green to red when being near landmines, because of the nitrogen dioxide gas released from landmines. This way you can detect landmines and save lives.
In Alaska, plants can grow freakishly large due to the 20 hours of sunshine they receive per day – which gives them a photosynthesis bonus. Examples include 138 lb cabbage, 65 lb cantaloupe, and 35 lb broccoli. A noted side effect is that the produce is also much sweeter due to the extra sunlight.
A study found tobacco and tomato plants emit ultrasonic “squeals” when stressed. Microphones 4″ away picked up the sounds when plants had stems cut/were under-watered: an average of 15 – 25 sounds within 1 hr from cutting, and 11 – 35 sounds per hr from drought.
There is a garden in Alnwick Park, Northumberland which contains over 100 different types of poisonous plants, which visitors are prohibited from touching or smelling. Despite this, seven people fainted in 2014 from inhaling the toxic fumes.
You think your house plans just sit around motionless all day? Think again.
Leaves of Mimosa pudica plant fold inward and droop when touched or shaken, defending themselves from harm.
In the late 80s NASA studied house plants as a means of providing cleaner and purer air for their space stations. They found Peace Lilies and Chrysanthemums to be the best all rounders at air filtering.
Forced rhubarb, grown by candlelight in otherwise pitch-black sheds, grows so quickly you can actually hear it make sound – popping, cracking and snapping.
On September 15 1989, NASA published a comprehensive report on house plants that are best for cleaning indoor air pollution.
Plants can ‘hear’ flowing water: plant roots seek out buried pipes through which water flows even if the exterior of the pipe is dry.