Plant Care
Missouri Botanical Garden Plant Finder
A strong reference for plant names, habits, and garden use.
Missouri Botanical Garden / United States
Noah's Curated Sources
Best Gardening Links
These are external references I would use to cross-check plant names, pest guidance, soil fundamentals, and regional growing advice. The old Best of Links sheet can feed this section directly.
Plant Care
Royal Horticultural Society Advice
Practical horticultural advice with reliable topic coverage.
RHS / United Kingdom
Plant Care
NC State Extension Gardener Plant Toolbox
Useful plant profiles with growing conditions and problem notes.
NC State Extension / United States
Climate and Seasons
University of Minnesota Extension Yard and Garden
Clear garden guidance from an extension source.
University of Minnesota Extension / United States
Plant Problems
UC IPM Pest Notes
Helpful pest and disease reference for home gardeners.
UC IPM / United States
Tools and Supplies
FAO Soils Portal
Background reference for soil health and soil thinking.
FAO / Worldwide