This is a nice set of four books:

Perennials
This book covers all aspects of planting and maintaining perennials. The illustrations are beautiful and it gives you ideas and information to help create an amazing perennial garden.

Landscaping with Perennials
Discover exciting ways to use perennials to turn difficult sites into eye-catching landscape features. Learn how to organize perennials into a cottage, butterfly or cutting garden.

Herbs
Pictures are large and informative. Has everything from planting to harvesting. Best identification of herbs
by color, leaves, roots, uses and nice pictures of the finished gardens.

Annuals and Bulbs
A great source for practical growing information and inspiring ideas on including annuals, biennials and bulbs in all parts of your yard. The included encyclopedias of annuals and bulbs help you pick the perfect plants for your needs and conditions.