Beginners Guide: Using Plant Species Factor For Watering

Different plants placed in the same landscape may have different water requirements. This is easy to understand when comparing a cactus to a fern. But when comparing African daisies (Osteospermum) to Lavender (Lavandula) it is probably not so easy to tell. Plants use water differently and they all don’t respond to weather the same way. As a result, before selecting plants for your landscape it is important to use a plant species factor to understand… Read more »


Surprising World Population Trends

World population statistics are often used to motivate people to conserve. We have learned about world population exceeding 9 billion by 2050 and many people use this statistic and hope we draw the conclusion by 2100 the world population will be even higher. However, today there is evidence pointing to 2050 being the peak or close to the peak of population and we will see a gradual decline after 2050. This concept was first presented… Read more »


The 4 Liter Challenge

I thought getting people interested in the 4 Liter Challenge would be easy, but based on my first two responses to an email I sent to a few friends and colleagues I quickly learned this was going to be tougher than I thought. The first response I received was: “So basically, we get a gallon jug of water, don’t shower, do dishes, water plants, etc…  just sit with our gallon… Read more »