Plant Facts
Straight answers to the questions people ask about plants, with the numbers behind them.
What Plant Produces the Most Oxygen?
Which plants really make the most oxygen, from ocean plankton to big trees to houseplants, plus the truth about snake plants at night and NASA.
The Most Expensive Houseplants Ever Sold
The record prices paid for rare variegated aroids and prized orchids, why variegation costs so much, why prices crashed and how to buy safely.