Databases are collections of journals, magazines, newspapers, and other sources put together. You can search by keyword, title, or author to find many sources. You might also check out the limiters on the left side to narrow your search.
A comprehensive periodical collection supporting research in horticultural studies.
JSTOR is a digital library of academic journals, books, and primary sources.
Accessible from anywhere, and the full-text is often searchable. You can find more books and ebooks using PML Search.
For both print and digital books, you might end up reading a chapter or two instead of the whole book. We also have resources available on specific types of plants. Let me know what you need help finding.
Horticultural Plant Breeding by 
Good Agricultural Practices for Greenhouse Vegetable Crops by 
Soilless Culture by 
Plant Factory: An Indoor Vertical Farming System for Efficient Quality Food Production by 
Achieving Sustainable Greenhouse Cultivation by 
Greenhouse Operation and Management by 
The Plant Propagator's Bible by 
The Aquaponic Farmer by 
Urban Horticulture by 
Practical Horticulture by