This database lists every perennial plant that is worth growing for the sake of its produce, and that is hardy in at least 3 USDA hardiness zones; it also contains a selection of the most popular perennial herbs. Every plant listed here will survive temperatures down to at least 15 F without special care, and to at least 10 F with special care.

Update.You can get all this and more as a Macintosh application, for only $15. The application comes with images for every plant (except the dandelion!), and the average image quality is higher than at the Web site (the photo for pineapple guava is typical). I might convert the photos to a cross-platform format upon request. There is a full-featured search engine, so that you can select only those plants that, say, will grow in zone 4, do not reject soggy soil, and attract birds. More info.

Resources (bibliography, WWW resources, and sHOpPiNg)
Green Thumb Guide | Web Site FAQ
Commentary: Read | Write | Death Threats (read only)

Plant Index

Almond (Prunus amygdalus)
Apple (Malus pumil)
Apricot; Golden Apple (Prunus armeniaca)
Artichoke, Globe (Cynara Scolymus)
Asparagus (Asparagus officinalis)
Autumn Olive (Elaeagnus umbellata)
Bamboo, Giant (Phyllostachys spp.)
Bay; Laurel (Laurus Nobilis; Umbellaria californica)
Blackberry (Rubus ulmifolius; R. ursinus)
Blueberry, Highbush (Vaccinium corymbosum)
Blueberry, Lowbush; Huckleberry (Vaccinium angustifolium)
Burnet (Poterium sanguisorba)
Chayote; Mirliton; Vegetable Pear (Sechium edule)
Cherry, Nanking; Downy C.; Mountain C. (Prunus tomentosa)
Cherry, Sour (Prunus cerasus)
Cherry, Sweet (Prunus avium)
Chestnut, Chinese (Castanea mollisima)
Chestnut, European; Spanish C. (Castanea sativa)
Chives (Allium schoenoprasum; A. tuberosum)
Chokeberry, Black (Aronia melanocarpa)
Citrus, Hardy (various)
Cornelian Cherry; Cornet Plum; Cornel (Cornus mas)
Cranberry (Vaccinium macrocarpon)
Currant, Clove Black; Buffalo C. (Ribes odoratum; R. aureum)
Currant, European Black (Ribes nigrum)
Currant, Red; White C. (Ribes sativum; R. rubrum; R. petraeum)
Dandelion (Taraxacum officinale)
Elderberry, American; Sweet E. (Sambucus canadensis) ...photo
Fig (Ficus carica)
Filbert, European; Hazelnut (Corylus avellana)
Gooseberry (Ribes uva-crispa; R. hirtellum)
Grape, American (Vitis labrusca)
Grape, European; "The Vine" (Vitis vinifera)
Grape, Muscadine; Scuppernog (Vitis rotundifolia)
Gumi; Cherry Elaeagnus (Elaeagnus multiflora)
Hickory (Carya ovata; C. laciniosa)
Hyssop (Hyssopus officinalis)
Jostaberry (Ribes nidigrolaria)
Jujube; Chinese Date (Ziziphus jujuba)
Kiwi, Arctic Beauty (Actinidia kolomitka)
Kiwi, Hardy (Actinidia arguta)
Kiwi; Yang Tao; Chinese Gooseberry (Actinidia deliciosa)
Lemon Balm (Melissa officinalis)
Lingonberry; Cowberry (Vaccinium vitis-idaea)
Loquat (Eriobotrya japonica)
Lovage (Levisticum officinale)
Medlar (Mespilus germanica) ...photo
Mint; Spearmint (Mentha spicata)
Mulberry, Black (Morus nigra)
Onion, Tree; Egyptian Onion; Catawissa (Allium cepa aggregatum)
Oregano; Wild Marjoram (Origanum vulgare)
Passionfruit; Maypop (Passiflora incarnata)
Pawpaw; Michigan banana (Asimina triloba )
Peach; Nectarine (Prunus persica)
Pear, Asian; Sand Pear; Apple Pear (Pyrus pyrifolia)
Pear, European (Pyrus communis)
Pecan (Carya illinoensis)
Persimmon, American (Diospyros virginiana)
Persimmon, Oriental; Kaki (Diospyros kaki)
Pineapple Guava; Feijoa (Feijoa sellowiana) ...photo
Pistachio (Pistacia vera)
Plum, European; Prune (Prunus domestica)
Plum, Japanese (Prunus salicina)
Pomegranate (Punica granatum)
Quince (Cydonia oblonga)
Raisin Tree (Hovenia dulcis)
Raspberry (Rubus idaeus; R. occidentalis)
Rhubarb (Rheum rhaponticum)
Rose Hips; Rugosa Rose (Rosa rugosa; R. eglanteria)
Rosemary (Rosmarinus officinale)
Russian Olive; Oleaster (Elaeagnus angustifolia)
Sage (Salvia officinalis)
Saskatoon; Serviceberry; Juneberry (Amelanchier alnifolia)
Savory, Winter (Satureja montana)
Sea Buckthorn; Sea Berry (Hippophae rhamnoides)
Sorrel; English Sorrel (Rumex acetosa)
Strawberry (Fragaria X Ananassa )
Strawberry, Alpine; Fraise de Bois (Fragaria vesca) ...photo
Strawberry, Musk; Hautbois (Fragaria moschata)
Tarragon, French (Artemisia dracunculus)
Thyme; Lemon Thyme (Thymus vulgaris; T. citriodorus)
Walnut, Black (Juglans nigra)
Walnut, Persian; English Walnut (Juglans regia)