No, I don't own a nursery (thank the lord!! this is not a good time for that industry :-)) but I've been a manager and the perennial buyer for a couple over the last 15 years and most recently, a sales rep for a wholesale grower......probably made sales trips to your neck of the woods as EWA was my primary territory. No doubt you have visited the nurseries I used to work at - they are a couple of the bigger ones in the Seattle area. Of your ballotas, the pseudodictamnus is probably the least hardy, sorry to say. The reports of a zone 5 hardiness are very optimistic. It might make it through a zone 6 although will likely die back to the roots. Even Annette, who shares a similar zone with me, has had trouble overwintering hers. But you never know....keep your fingers crossed! Annette, I treat pretty much any 'evergreen' perennial/subshrub the same....if the foliage is damaged or looks ratty after winter, I cut it back as soon as new growth begins to emerge in spring. I mow back my parahebes (and hebes) often :-)

Found this by simply Googling Juglone Resistant Plants... Plants Observed Growing Under or Near Black Walnut* Japanese Maples, Acer palmatum and its cultivars Southern Catalpa, Catalpa bignonioides Eastern Redbud, Cercis canadensis Canadian Hemlock, Tsuga canadensis Vines and Shrubs Clematis 'Red Cardinal' February Daphne, Daphne mezereum Euonymus species Weeping Forsythia, Forsythia suspensa Rose of Sharon, Hibiscus syriacus Tartarian Honeysuckle, Lonicera tatarica, and most other Lonicera species Virginia Creeper, Parthenocissus quinquefolia ** Pinxterbloom, Rhododendron periclymenoides **'Gibraltar' and 'Balzac', Rhododendron Exbury hybrids Multiflora Rose, Rosa multiflora Black Raspberry, Rubus occidentalis Arborvitaes, Thuja species ** Koreanspice Viburnum, Viburnum carlesii, and most other Viburnum species Pot-marigold, Calendula officinalis 'Nonstop' Begonia, fibrous cultivars Morning Glory, Ipomoea 'Heavenly Blue' Pansy Viola Zinnia species Vegetables Squashes, Melons, Beans, Carrots, Corn Fruit Trees Peach, Nectarine, Cherry, Plum Prunus species Pear-Pyrus species Herbaceous Perennials Bugleweed, Ajuga reptans Hollyhock, Alcea rosea American Wood Anemone, Anemone quinquefolia Jack-in-the-Pulpit, Arisaema triphyllum European Wild Ginger, Asarum europaeum Astilbe species Bellflower, Campanula latifolia **Chrysanthemum species (some) Glory-of-the-Snow, Chionodoxa luciliae Spring Beauty, Claytonia virginica Crocus species Dutchman's Breeches, Dicentra cucullaria Leopard's-Bane, Doronicum species Crested Wood Fern, Dryopteris cristata Spanish Bluebell, Endymion hispanicus Winter Aconite, Eranthis hyemalis Snowdrop, Galanthus nivalis Sweet Woodruff, Galium odoratum Herb Robert, Geranium robertianum Cranesbill, Geranium sanguineum Grasses (most) Gramineae family Jerusalem Artichoke, Helianthus tuberosus Common Daylily, Hemerocallis 'Pluie de Feu' Coral Bells, Heuchera x brizoides Orange Hawkweed, Hieracium aurantiacum Plantain-lily, Hosta fortunei 'Glauca' Hosta lancifolia Hosta marginata Hosta undulata 'Variegata' Common Hyacinth, Hyacinthus Orientalis 'City of Haarlem' Virginia Waterleaf, Hydrophyllum virginianum Siberian Iris, Iris sibirica Balm, Monarda didyma Wild Bergamot, M. fistulosa Grape Hyacinth, Muscari botryoides Sweet Cicely, Myrrhis odorata 'Yellow Cheerfulness,' 'Geranium,' 'Tete a Tete,' 'Sundial,' and 'February Gold' Sundrops, Oenothera fruticosa Senstitive Fern, Onoclea sensibilis Cinnamon Fern, Osmunda cinnamomea Peony, **Paeonia species (some) Summer Phlox, Phlox paniculata Mayapple, Podophyllum peltatum Jacob's-Ladder, Polemonium reptans Great Solomon's-Seal, Polygonatum commutatum Polyanthus Primrose, Primula x polyantha Lungwort, Pulmonaria species Bloodroot, Sanguinaria canadensis Siberian Squill, Scilla sibirica Goldmoss Stonecrop, Sedum acre Showy Sedum, Sedum spectabile Lamb's-Ear, Stachys byzantina Spiderwort, Tradescantia virginiana Nodding Trillium, Trillium cernuum White Wake-Robin, Trillium grandiflorum Tulipa Darwin 'White Valcano' and 'Cum Laude,' Parrot 'Blue Parrot,' Greigii 'Toronto' Big Merrybells, Uvularia grandiflora Canada Violet, Viola canadensis Horned Violet, Viola cornuta Woolly Blue Violet, Viola sororia *These are based upon observations and not from clinical tests. **Cultivars of some species may do poorly. Ostrich ferns aren't bothered by black walnuts either. Once established, the ostrich ferns can grow quite large. Mine have adapted to full sun and are huge - almost prehistoric looking.

cannot speak to heat tolerant conifers sad to say but i thought i would speak up for the surprising adaptability of Mexican conifers (Mexican oaks as well) to seemingly very different climates and localities. i have had gratifying success growing a number of species (likely mostly from areas with a summer rainfall maximum) here in the summer cool and dry (winter very wet) pacific north west (oregon coast)---including pinus montizumae, p. patula, p. pseudostrobus, p. estevezii,, cupressus montana, c. guadalupensis, and podocarpus matudae---.wonderful trees that once established seem to do well with little or no additional care.

Thanks Kvolk - i'm going to check out that St. Mary's Broom you mentioned. Anybody have suggestions (online) where they've bought from? Or good links to info/picture on it? I could probably post this or look at the conifer forum too, but thought i'd write it anyways. I have very clayish soil too....enough to have to have a septic mound system at least. If you have any pics of your own trees, I'd love to see. I was thinking of getting the triflorum, griseum and that mandshurican (sp?) next spring. Anybody have any favorite places (online) they get these from? Or have had best luck with? Our winters haven't been extremely cold here either...no -20s at least. I was going to put some chicken wire around some of the more zone 5 iffy JMs or ones that i know the rabbits and other animals can get to. I just don't know if i should put some shielding on the west and north sides of the chicken wire enclosure for the trees...to shield from winter winds?? Not sure if that's worth the trouble. My trees are all on the north and east side of my house too. Last year, I wrapped all the JMs in this wire and then wrapped that wire enclosure with some polystyrene flexible layer and left top open...lot of work. And then even the Coral Barks had major dieback - they had the black bark thing happening. So i cut them back to about 10 inches off ground and they came back really nicely, but now it's almost winter and i don't know if i want to baby the Sango kakus every winter and then see them die back 2 feet every year. (I had planted these sango kakus last October - late). Maybe they weren't established enough and that's the reason for dieback or maybe the enclosure i made just was too much...and then they got that dark br/black bark and dieback?? Not sure. I have a couple more JMs this year compared to last...got a little crazy this summer. But anyways, i really only want to put the chick wire fence around the JM's and not try to insulate or shield them...you think i can get away with that? One more question...does anybody know if there's a really big difference between the acer griseum cinnamon paperbark and the girard's hybrid...personal experience with that? I don't know which one to get. NEWgars - is your girard's hybrid and griseum planted in pretty protected locations? And anybody have pictures of their triflorum, griseum and mandshurican?