The second rank of the tree of life is Kingdom. Today we understand this rank and its separations.

Introduction to Plant Taxonomy - 1: Domain - The first in a series looking at the categories, which sub-divide all life by characteristics.

3rd in a series of guides on recommended books. 3 books on Identifying British Trees and 3 on Identifying British Wildflowers.

The first in a series of guides to recommended books. 3 books each on Technical Drawing and Horticultural Principles.

A simple explanation on how Bi-specific and Bi-generic hybrids are created and how to read and write them.

A grumpy assessment of the name change to Common Rosemary.