By focusing on being attentive to gardening we are turning inside out the nature of mind. When we can garden without thought we are approaching our practice with Right Mindedness. Right Communication Speech is one form of communication. All expression and all manifestation talks to us and we respond. What we say in our mind to this, is our speech - if we do not like this we must change it.
Right speech is then the attention to our thoughts expression.
In gardening it is our communication with nature, our commitment to growth and improvement that shows that actions speak louder than words. Right Action Gardening is activity. The more active we are in gardening - the quieter our minds become. This is quite often the opposite of meditation where our body is still but there many be much mental activity. Action is not only what is done but more importantly how.