My website has many posts and pages on plant topics. Here is a list of some of the pages that give basic information on native plants, especially in Philadelphia and the Mid-Atlantic region.
Native Plants
My Love Affair with Native Plants
Books about Native Plants and Ecological Gardening
Natural Places to Observe Native Plants
Natural Places in the Philadelphia Area
These lists are of native plants of Philadelphia and the Delaware Valley. These plants have lived here for thousands if not millions of years. They are automatically suited to grow in this region. No worries about suitable zones, soil types or hardiness, their compatibility to the climate is built right in. Just match the moisture (moist or dry) and the light conditions (shade or sun) and you are good to go.
The Piedmont Plateau: The Rolling Hills of Philadelphia
Basic Information: Philadelphia Nature
Trees
Common trees of PA (free, downloadable pdf)
Leaf Colors of Common Trees Here in the Oak-Hickory Forest
Why Trees Shed Their Leaves in Fall
Terrestrial and Palustrine Plant Communities of Pennsylvania (free, downloadable pdf)
Street Trees for Philadelphia and the MId-Atlantic
List of Native Trees for Philadelphia
Paris Lessons: Street Trees and Strolling in the Shade
Native Plants
Native Plants of Pennsylvania – Resources
Books about Native Plants and Ecological Gardening
Native Plant Sales
Native Plant Sales in the Mid-Atlantic Region
Where to Buy Native Plants in Southeastern Pennsylvania
Invasive Plants
Plants for Attracting Birds, Butterflies and Other Animals
The Naturalist’s Garden: An Overview
What is a Naturalist’s Garden?
Garden Flowers to Attract Birds
Spring Blooming Plants to Attract Hummingbirds
Early Spring Blooming Plants to Attract Bumblebees
Spring Plant Lists
Spring Blooming Native Plants of Philadelphia
Summer Plant Lists
Long Bloomers: Native Plants that Bloom for a Long Time
Summer into Fall Blooming Native Plants of Philadelphia
Conditions
Plants for a Sunny and Dry Garden