For perennials, deer dislike 3 categories of plants:

• Those with felted leaves such as lamb’s ears.

• Those with aromatic leaves such as the ornamental oregano and other herbal perennials.

• Those that are poisonous.

I have found that if a garden consists primarily of deer-resistant perennials, it is possible to intersperse (away from the border edge) a few of their most favorite plants.  This is best accomplished among aromatic leaved plants.  However, it is possible to grow even tulips in a large daffodil bed.  Below I have listed perennials, as well as a few bulbs and herbs that I have found to be deer-resistant.  Click on the plant name to view more information about that plant.

Monarda (Beebalm, Bergamot)
didyma Colrain Red

Foxglove (Digitalis)
grandiflora (ambigua)

Pampas Grass - Cortaderia
selloana Pumila

Tickseed (Coreopsis)
 Tequilla Sunrise

Alan's Picks of Deer-Resistant Perennials, Bulbs & Herbs
 

Agave and Cactus

Anise Hyssop (Agastache)

Archangel (Lamiastrum and Lamium)

Bamboo

*Bishop’s Hat (Epimedium)

Bear’s Breeches (Acanthus)

Beebalm(Monarda)

Bleeding Heart (Dicentra)

Blue Fescue Grass

Blue Star (Amsonia)

Butterfly Flower (Asclepias)

Catmint (Nepeta)

Comfrey (Symphytum)

Daffodils (Narcissus)

False Indigo (Baptisia)

False Solomon’s Seal (Smilacina)

Feather Reed Grass (Calamagrostis)

Ferns (most, except Japanese Silver Painted)

Fountain Grass (Pennisetum)

Foxglove (Digitalis)

Gas Plant (Dictamnus)

Germander (Teucrium)

Ginger (Asarum)

Goatsbeard (Aruncus)

Hardy Cyclamen

Hardy Geraniums (especially aromatic-leaved varieties such as Geranium macrorrhizum)

Helleborus

*Hyacinth

Iris (especially bearded iris)

Jack-in-the-pulpit (Arisaema triphyllum)

Lamb’s Ears (Stachys lanata)

Lavender (Lavandula)

Lavender Cotton (Santolina)

*Lily of the Nile (Agapanthus)

Lily of the Valley (Convallaria)

*Lungwort (Pulmonaria)

Miscanthus Grass

Mondo Grass (Ophiopogon)

Monkshood (Aconitum)

Mountain Balm (Calamintha)

Ornamental Onion (Allium)

Ornamental Oregano

Ornamental Rhubarb (Rheum)

Pachysandra

Pampas Grass (Cortaderia) 

Peonies (Paeonia)

Periwinkle (Vinca)

Plumbago (Ceratostigma)

Rose Campion (especially felt-leaved varieties such as Lychnis coronaria)

Rosemary

Russian Sage (Pervoskia)

Salvias and Sages

*Scilla

Soapwort (Saponaria)

Spiderwort (Tradescantia)

Spurge (Euphorbia)

St. John’s Wort (Hypericum)

Sweet Woodruff (Asperula)

Tansy

Thyme

Tickseed (Coreopsis, especially verticillata types)

Water Lily (Colchicum)

Wormwood (Artemisia)

Yarrow (Achillea) 

Yucca

*withstands moderate deer pressure; will not withstand really intense foraging.