Indiana native plants

From http://www.indianawildlife.org/wildlife/native-plants/

Native Trees

EVERGREEN:

Eastern Red Cedar, Juniperus virginiana
Hemlock, Tsuga canadensis
White Pine, Pinus strobus

DECIDUOUS:

Common Hackberry, Celtis occidentalis
Tulip Poplar, Liriodendron tulipifera
Shagbark Hickory, Carya ovata
Red Maple, Acer rubrum
Oaks, Quercus (all spp.)
White Walnut or Butternut, Juglans cinerea
Redbud, Cercis canadensis
Black Gum, Nyssa sylvatica

Native Shrubs

Common Serviceberry, Amelanchier arborea
New Jersey Tea, Ceanothus americanus
Spicebush, Lindera benzoin
Common Ninebark, Physocarpus opulifolius
Fragrant Sumac, Rhus aromatica
Elderberry, Sambucus canadensis
Gray Dogwood, Cornus racemosa
Silky Dogwood, Cornus amomum
Virginia Sweetspire, Itea virginica
Common Winterberry, Ilex verticillata
Buttonbush, Cephalanthus occidentalis
American Highbush Cranberry, Viburnum opulus var. americanum
Elderberry

Native Vines

Trumpet Creeper
Virginia Creeper, Parthenocissus quinquefolia
Trumpet Creeper, Campsis radicans

Grasses

Indian Grass
Native Grasses
Switch Grass, Panicum virgatum
Indian Grass, Sorghastrum nutans
Little Bluestem, Schizachyrium scoparium
Big Bluestem, Andropogon gerardii
Northern Seaoats, Chasmanthium latifolium

Native Nectar Plants

Nearly every blooming tree, shrub,
perennial, or annual will provide some
nectar for butterflies and other insects.
This list includes favorites in many
habitats:
Redbud, Cercis canadensis
Flowering Dogwood, Cornus florida
Blue Wild Indigo, Baptisia australis
Butterfly Weed, Asclepias tuberosa
Wild Bergamot, Monarda fistulosa
Wild Columbine, Aquilegia canadensis
Foxglove Beardtongue, Penstemon digitalis
Rough Blazing Star, Liatris aspera
Purple Coneflower, Echinacea purpurea
Showy Goldenrod, Solidago speciosa
New England Aster, Aster novae-angliae
Common Spiderwort, Tradescantia ohiensis
White Aster

Butterfly Larva Food Sources
Nectar only meets part of butterflies' food requirements. Many species lay their eggs only on specific plants, and to keep these butterflies in your habitat, one needs to provide larval, or caterpillar, food as well.
Monarchs are common and particularly interesting butterflies. Their migration to Mexico can be followed on Monarch Watch. Attract them to your yard with their specific larval food, any of five kinds of Milkweed: common, showy, swamp, butterfly weed, or annual Blood Flower.

Pesticides ravage butterflies, their eggs, and caterpillars when sprayed on flowers, trees, shrubs, and lawns. Try to accept some damage on your leaves rather than using harmful chemicals.